Pit¢@R'N
E-235 VOL. 29
TRANSMISSION SYSTEM
EXPANSION PROJECT NO.9
( 41994 - 1998 )
VOLUME I DETAILED ECONOMIC ANALYSIS
ELECTRICITY GENERATING AUTHORITY OF THAILAND
REPORT NO. 21200-3809 SYSTEM PIANNING DEPARTMENT
MARCH 1995
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TRANSMISSION SYSTEM EXPANSION PROJECT NO.9
(1994-1998)
VOLUME II DETAILED ECONOMIC ANALYSIS
REPORT NO. 21200-3809
MARCH 1995
Prepared By Concurred By
Transmission System Planning DivisionemPlanino_(Prakob Dhienhirunya)
Assistant Director, System
Planning Department-Transmission
Submitted By: Approved By:
(Prutichai Chonglertvanichkul) (Siridat Glankwahmdee)
Chief, Transmission System Director, System Planning Department
Planning Division
ABBREVIATIONS
ACSR - Aluminum Conductor Steel Reinforced
cct-klm - Circuit-Kilometer
DC/ST - Double Circuit/Steel Tower
DEDP - Department of Energy Development and Promotion
DR. - Discount Rate
EDR. - Equalized Discount Rate
EGAT - Electricity Generating Authority of Thailand
FBC - Fluidized Bed Combustion
F.C. - Foreign Currency
IDC - Interest During Construction
L.C. - Local Currency
MTHB - Million Baht
MEA - Metropolitan Electricity Authority
MCM - Thousand Circular Mils
MVA - Megavolt-ampare
MVAr - Megavolt-ampere Reactive
MW - Megawatt
NEPC - National Energy Policy Council
NEPO - National Energy Policy Office
NESDB - National Economic and Social Development Board
NESDP - National Economic and Social Development Plan
NIDA - National Institute of Development Administration
PDP - Power Development Plan
PEA - Provincial Electricity Authority
P.V. - Present Value
TDRI - Thailand Development Research Institute
THB - Baht
USD - US Dollar
VAT - Value Added Tax
W/O - Without
TABLE OF CONTENTS
Page
1. INTRODUCTION I
2. SUMMARY AND RECOMMENDATION 2
3. CRITERIA AND ASSUMPTIONS FOR ECONOMIC ANALYSIS
OF SUBPROJECTS 7
4. DETAILED ECONOMIC ANALYSIS OF EACH SUBPROJECT 11
5T FNANCTAT. TJTIFICATION OF TS-9 PROJECT BASED ON
TIME SLICE APPROACH 139
APPENDIXES
1. Load Flow Diagrams of the Proposed Plan of each Subproject 147
2. Full Name and Abbreviation ot Substation 217
tKOGRIVEn
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i. INTRODUCT
Report Volume II (Detailed Economic Analysis) presents details of the
economic and financial justifications of the Transmission System Expansion ProjectNo.9 (TS.9). The project comprises 24 subprojects for transmission line and substationexpansion and reinforcement, addition of new transformers, reactive power supply andmiscellaneous equipments including related communication system. The scope and
purpose of each subproject are described in Volume I (Main Report).
The economic justification of each subproject is performed based on theleast cost solution. Each proposed subproject is the least cost alternative among other
alternatives which serve the same objectives.
Since TS.9 Project is an integral part of EGAT's overall development
program, the economic justification of the whole project package in terms of economicand financial internal rate of return (EIRR and FIRR) has been therefore evaluated based
on the time-slice study of EGAT'is overall llower Development Plan (PDP) for the
period covered by the Project.
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2. SUMMARY AND RECOMMENDATION
2.1 Economic Analysis of each subproject is evaluated based on the least cost
solution. The proposed subproject is selected from at least three other possible
altematives which can satisfy the same objiectives. The -resent value of te t0o Cost
of each possible alternative which include investment cost, operation and maintenance
cost and the cost of system losses of each alternative, is calculated and compared.
System losses of each subproject and its alternatives are obtained from the power flow
studies of the whole EGAT's power system. The economic viability of each subproject
is presented in terms of the Net Present Value (NPV) and benefit/cost ratio (B/C ratio)
at 10 % discount rate and equalized discount Rate (EDR).
2.2 Results of economic analysis w\hich has indicated that all proposedsu'bprojects in TS.9 Project are the least cost alternative, are summarized in Table 2.1.
2.3 The four years time slice study oflGA(iT'l's overall Power Development Plan
(PDP) 1995-1998 is performed to represent the economic and financial rate of return
(EIRR and FIRR) of the whole package of TS.9 project. The result ol the study shows
the EIRR and FIRR of the Project is 11 .77 and 4.51 percent respectively.
2.4 It can be concluded from the analyses that the TS.9 Project is the least cost
solution for EGAT's power system reinforcement and expansion in each subproject area
and the whole package of TS.9 project for the period of 1995-1998 is also economically
viable.
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Table 2.1 Summary Result of Economic Analysis in TS. 9
No. Fiscal Description Net P.V. R/r EquelizedYear @10 %DR.1 Ratio Discount
__(MTHB) Rate
CENTRAL REGION
1. 230/115 KV BAN PONG 2 - BAN PONG I - NAKHON CHAISI - SAM PHRAN 2 LINES AND SUBSTATIONSa. 1998 - Reconstruction ot115kV Ban Pong 2-Ban Pong 1-Nakhon Chalsl-Samn Phran 2to
2301115 kV DC/ST 2x1.272 MCM ACSR, 43 km2006 - Installation o0 230/115 kV 1x200 MVA Transtormer at Ban Pong 2 Suostation
- Construction of 230 kV Ban Pong 2-Sal Noi DC/ST 1,272 MCM ACSR, 53.6 km- Reconstruction ot 230 kV Ratchaburi 2-Ban Pon 2 to DC/ST 2x1272 MCM ACSR, 41.7 km - --- Base Ca se
b. 1998 -Reconstructionot115kVBanPong2-(BanPongl)-NakhonCharsito 230kVDC/ST
2xi ,272 MCM ACSR, 38 km-FReconstruction oll 15kV Nakhon Chaisi-Sam Phran 2to 115/230 kVDC/ST 2x1,272 MOM ACSR, Skm- Installaton of 230/115 kV 3x200 MVA Transtormer at Nakhon Chaisi Sur.station
2006 - Construction of 230 kV Ban Pong 2 - Sai Noi DC/ST 1.272 MCM ACSR. 53.6 km- Reconstruction o 230 kV Ratchaburi 2-Ban Pon 2 to DC/ST 2xt 272 MCM ACSR, 41.7 km 88.56 1.0026 N.A.
C. 1998 - Construction of 230 kV Sai Noi-Nakhon Chaisi DC/ST 2x1.272 MCM ACSR. 35 km and-Reconstnjctlono 115kV NakhonChaisi-Samphran2 to 1151230 kV DC/ST 2x1.272 MOM ACSR. Skm-Installation of 230/115 kV 2x200 MVA Transformer at Nakhon Chaisi Suostation
1999 - Construction of 230kV Ban Pong 2-Sal Nol DC/ST 1,272 MCM ACSR, 53.6 km2006 - Reconstruction ot 230 kV Ratchaburi 2 -Ban Pong 2 to DC/ST 2x2 272 MCM ACSR, 41.7 km
Installation ot 230/115 kV 1x200 MVA Transto rmer at Nakhon Chaisi Sibstation 501.16 1.0146 > 150.0 S62. 1S5 KVSBOWIN -BAN BUNG LUNEAND SUBSTATIONS
a. 1997 - Construction ot tISkV Bo Win-Ban Bung DC/ST 2x795 MOM ACSR. 27 kmn2001 - Installation ot230/115 kV 1x200 MVA Transformer at Bo Win Substation -Bae Case
b. 1997 - Reconstruction of 11 SkV Ao Phai-Si Racha-Ban Bung to Ao Phal-Ban Bung DC/ST 2x795 MCM ACSR,
38 km with detour line Si Racha-Ban Bung 33 km2004 - Installation ot 230/115kV 1 x200 MVA Transtormer at Bo Win Substation
-Installatbon ot 230/115 kV 1 x200 MVA Transtormer at Ao Phai Substation 90.02 1.0036 > 150.0c, 1997 - Construction of 230 kV Bo Win-Ban Bung DC/ST 1,272 MCM ACSR, 27 km
- lnstallaton of 230/115 kV 2x200 MVA transtormer at Ban BtSng Substation___ 2004 - Installation of 230/1 1 5 kV i x200 MVA Transtormer at Bo Win Substation 243.37 1.0096 >150.0%
3. 115 KVTHAWUNG SUBSTATION AND LINES CONNECTIONa. 1898 -Construction ot The Wung Switching Substation at intersection point of 11SkV
Lop Buril -Sing Burl and Ang Thong 2-Lop Bun 2 line.- Installation of 1 x200 MVA Transformer at Ang Thong I Substation
2002 - Construction of 115 kV Tha Wung-Lop Burl 1 SC on DC/ST. 795 MCM ACSR, 13 kmBase Case …b. 1998 -Reconstruction ot115 kV Ang Thong 1-Sing Burto be DC/ST 2x795 MOM ACS, 234km
- Installation of 1 x200 MVA Transformer at Ang Thong I Substation- Installation o0 44.08 and 22.04 MVAr Capacitor Bank at Sing Burn and Lop Buri I Substation respectrtely.
2002 -Construction ot15WkV Sing Burl-Lop Buri 1 SC on DC/ST, 795 MCM ACSR, 27 km 20.76 1.0001 N.A.c. 1 998 - Tenmination of one cctot 230 kV Tha Tako-Ang Thong 1 to Sing Buri
-Installation of 1x200 MVA Transtormer at Sing Buri Substation2002 -Construction o115kV Sing Buri-Lop Buri SCon DC/ST. 795 MCM ACSR, 27 km2006 -Installation ot 1x200 MVA Transformer atAng Thong 1 Substation 3_ 32.30 1.0016 | N.A.
d. 1998 -TerminationofonecCtof23okVThaTako-Thalan3anc tl5kV SngBuri- LopBur 1 toThaWung- Installation of 1x200 MVA Transformer at Tha Wung
2002 - Construction of 115 kV Tha Wung - Lop Burn I SC on DC/ST. 795 MCM ACSR. 13 km2003 -Installation o12x200 MvATranstormer at AnRThong)l Srstato-__-| 44.866 1.0022 N.A.
4. 115 KV THALAN 3 - SARABURI 1 LINE AND SUBSTATIONSa. t998 -Reconstruction of I 15 kV Thalan 1 -Saraburi I to Thalan 3-Saraburi I DC/ST 795 MCM ACSR.
I1t5 km (with detour line) and 115 kV Thalan I-Thalan 3 SC on DC/ST79S5 MCM ACSR, 5 km … - -_--Base Case-----b. t998 -Reconstruction ot I1 t kV Thalan 1 -Saraburi I to DC/ST 795 MCM ACSR.t8 km (with detour line) I
- Reconstruction oft Is kV Thalan 1 -Thalan 3 to DC/ST 795 MCM ACSR. 5km 10.03 1.0004| 31.36 %c. 1998 - ConStrUctionof IIskVThalan3-Saraouri I SConDC/ST795MCMACSR. 14kmank d an
- Terminaton of 115 kV Thalan I -Saraburi I to Thalan 3 and- Reconstruction of I 15 kV Thalan 1 -Thalan 3 to SC on DC/ST 795 MCM ACSR,5 krn
__ 2003 --Strlnging2rtdcctof115kVThalan3-Saraburi t 795MCMACSR, 14km 10.97 1.0004 | 25.28 %5. 115:kV RATCHASURI 2 - PHETCHABURI UNE AND SUBSATIONS
a. 1998 - Reconstruction of 115 kV Ratchaburi 2-Phetchaburl to DC/ST ix795 MCM ACSR, 53 km| - Installation of 6.04 and 12.08 MVAr Capecitor Bank at Cha-Am and Phetchaburi Substation respectively. … Base Case …
b. 1998 - Teminiation of 2nd Cet ot 230 kV Ratchaburl 2-Prachuap Khiri Khan line to Hua Hin 1,272 MCM ACSR. 10 kl2006 - Construction of 115 kV Ratchaburi 2-Phetchaburi SC on DC/ST 2x795 MCM ACSR, 53 km 12.09 1.0005 12.77 %
_ c. 1998 - COnstnrction o0115 IkV Ratchaburi 2-Phetchaburi SCon DC/ST 2_795 MCM ACSR. 53k | 29.12 1.0012 >150.0 %21 -Ma,-9S
04:19 PM
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Table 2.1 Summary Result of Economic Analysis in TS. 9_ _LCPN~T1NUED) ________
No. Fiscal |Description Net P.V. B/C EquaiizedYear @10 %DR. Ratio Discount
(MTHB) Rate
CENTRAL REGION (CONTINUED)
S. 115 KV PRACHINBUFRi 2- WATTHANA NAKHON LINE AND SUBSTATIONS
a. 1998 - Construction of I 15 kV Prachin Burl 2-Watthana Nakhon SC on DC/ST 2k795 MBCM ACSR, i7 kn - … Base Case …-. *ooe Co,-trtio.. 9. 230;11S kVP,,;ri Bu,, 2r-rrN_ihana Nagirron Sr_ on jCisi 1.272 MOM AcSR. 87 km _lUtt.UU 1 .UU3U >1150. *! c. 1998 -Construction ot 230 kV Prachi/ni Bu 2-WatthaniaNakghonl SC on DCIST 1.272 MCM ACSR. 07 km
--Instailaton o/230/115 kV1Ix209MVA Trsnslormer at WattiaNathon Substation. 322.14 1.0173 >150.0%NORTHEASTERN REGION
7. 230/115 KV MUKDAHAN 2 SUBSTATION AND 115 KV MUKDAHAN 2 - THAT PHANOM - NAKHON PHANOM
UNES. AND SLEBsTATONS
a. 1998 - Construction of Mukdahan 2 Substation and
- Temirnation oa one cct of 230 kV Savannakhet - Rol Et to Mukdahan 2 SubstatiOn
- tnstailation of 230/115 kV 2x200 MVA Transformers at Mukdahan 2 Substation
- Constnuction of 115 KV Mukdahan 2 - That Phanom DC/ST 795 MCM ACSR S8 km
- Construction of 115 kV That Phanon - Nakhon Phanom SC on DCIST 795 MCM ACSR 59 km
2003 -IInstailaton ot 230/115 kV 1x200 MVA Transformer at Rog Et Substation
2005 - Stringin 2nd cct of t t5 kV That Phanom - Nakrion Phanom 795 MCM ACSR 59 km _ Base Ca se …b. 1 998 - Construction ot NaLkhon Phanom 2 Sutstation and
- Terninaton of onre ct of 230 kV Thakhek - Sakon Nakhon 2 to Nakhon Phanom 2 Substation
- instailalton ot 230/115 kV 2x200 MVA Transformers at Nakhon Phanom 2 Sutbstation
- Constrijetlonf 1115kV Nakhon Phanom 1 -Nakhon Phanom 2 DC/ST 2x795 MCM ACSRl, 13km
- Construct/on of 115 kV Nakhon Phanom I -That Phanom DC/ST 795 MCM ACSR. 59 km
- Constructionof 1i5kVThatPhanom-Mukdalian SC on DC/ST 795 MCM ACSR., 45km
2001 -InstallatIon of 230/115 kV 1 x200 MVA Transformer at Roi El Substation
2004 -Stringing 2nd cct of 115 kV That Phanom - Mukdahan 795 MCM ACSR 45 km 367.72 1.0230>1c. 1998 - Construction alt I 5 kV Sakon Nakhon - That Phanom DC/ST 795 MCM ACSR 70 km
- Construction of 115 kV That Phanom - Nakhon Phanom SC on DC/ST 795 MCM ACSR 59 km
- Consttnction of 115 kV That Phanom - Mukdahan SC on DC/ST 795 MCM ACSR, 45 km
2001 - Installaton of 230/115 kV 1 x200 MVA Transformer at Roi Et Substation
2004 - Stringing 2nd cct 01115 kV That Phanom - Mukdahan 795 MCM ACSR. 45 km
2005 - Stnnging 2nd cct of I I5 kV That Phanom - Nakhon Phanom 795 MGM A9SR. 59 km 263.81 1.0165 31.53%d. 1998 - Construction o t115 kV Sakon Nakhon - Tnat Phanom DC/ST 795 MCM ACSR 70 km
- Construction of 115 kV That Phanom - Nakhon Phanom SC on DC/ST 795 MCM ACSR 59 km
- ConstrUction o0 115 kV Phon Thong - Mukdanlan SC on DC/ST 795 MCM ACSR, 90 km
-Stringing 2nd cct ot115kV Rol Et-Pion Thong 795 MOM ACSR. 45km
2001 - Installation or230/115kV 1x200 MVA Transformer at Rog Et Substation
2004 -Stringing2ndcotofll5kVPhonrThong - Mukdahan 795MCMACSR 90km
2005 -Stringing2ndoctotl115kVThatPhanom-NakhorinPnamm 795MOM.ACSR, 59km 281.971 1.0177 145.89% 18. t t15iV UDON 2 - NONG BUA LAM PHU UNE AND SUBSTATIONS
a. 1998 - Construction of 115kV Udon Thani 2 - Nong Bua Lam Phu SC on DC/ST 795 MCM ACSR, G1 km
2001 - Construction ot 115 kV Nong Bua Lam Phu - Loeg SC on DC/ST 795 MCM ACSR, 79 km
2005 - Stringing 2nd cct of115 kV Udon Thani 2 - NongBua Lam Phu 795 MCMACSR, 81 km ------…Base Case--…--b. 1 8 - Construction of 11 SkV Udon Than 2 - Nong Bua Lam Phu DC/ST 795 MCM AC SR. 61 km
2001 - ConstructionofIl5kVNongBuaLamPhu- Leai SConDCIST 79sMCMACSR, 79kmrn 6.04 1.0004| N.A. c. 1998 - Construction ot 230/115 kV Udon Than, 2 - Nong Bua Lam Phu DC/ST 1,272 MCM ACSR, 8I km
2001 -Construction of 115 kV Nong Bua Lam Phu- Loei SO on DC/ST 795 MCM ACSR, 79 km 63.02 1.0040 >150.0%19. 15 KV ROI ET- PHAYAKKHAPHUM PHISAI - SURIN UNES AND SLBSTATIONS
a. 1998 -Stringing 2nd ot 115 kVRoi Et-Phayakkhaphum Phisai 795 MCM ACSR, 84km and
- ConstructIon of 1115 kV Phayakkhaphum Phisai - Surin SC on DC/ST 795 MCM ACSR 80 km i
2003 - Stringing 2nd cot 0/1115 kV Phayakkhaphum Phisai - Surin 795 MCM ACSR 80 km ------ Base Case … =_--b. 1998 - Construction o0 115 kV Si Sa Ket - Surin SC on DC/ST 795 MCM ACSR 951km k -
- Stringing 2nd of 115 kV Roi Et - Phayakkhaphum Phisai 795 MCM AC SR 84 km
2003 - Stringing 2nd cct o 115kV Si Sa Ket - Surin 75 MCM ACSR 95km _ 67.15 [ 1.0041 58.57 %c. 1998 - Construction of 115 kV Burram - Surin SC on DC/ST 795 MCM ACSR 47 km
-Coonstructionolll5kVPhayakkhphumPhisa,- Suriri SConDC/ST 795MCMACSR. 80km
|-Reconstnction ot115kV Nakhon Ratchasima I - Buriram tobe DC/ST 795 MCM ACSR. 110.4km
2003 - Stringing 2nd cot of115 kV Buriram - Surin 795 MCM ACSR. 47km
2006 |-Reconstruction ot115kV Nakhon Ratchasima I - Nakhon Ratchasima 2100 te
DCIST 2x795 MCM ACSR 11.7 km
_- String 2nd cot 0/115 kV Phayakkhiaphum Phisa,-Surin 795 MOM ACSR. 90km 287.38| 1.0176 50 0 IO. t1SKV CHAIYAPHUM- BAMNET NARONG UNE AND SUBSTATIONS
a. 1998 -ConstructIon of 115 kV Chaeyaphum - Bamnet Narong SC on DC/ST 795 MCM ACSR 58 km
- Installaeono/ 115-22-11 kV2xS0MVA Transformer at Bamnet Narong Substatlon. B------Base Case-----b. 1998 -Constructionotf 15kVNakhonFRatchasgma2 - Bamnet Narong SC on DC/ST 795 MCM ACSR 85km K
| |_______ - Installation of 115-22-11 kV 2xS0 MVA Transformer at Bamnet Naron Substatlon 1 65.38| 1.00901 >150.0%||c. 1998 i-Installation o0 Gas Turbine Powa Plants at Bamnet Narong 1_ 1,009.561 1.0458 62.81 %;I
21-Mar-9504109 PM
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Table 2.1 Summary Result of Economic Analysis in TS. 9
N. Fiscal DeIr jin Iin Not P.V /RC I EaualizedYear , @10 -DR.I Ratio Discount
(MTHB) Rate
NORTHEASTERN REGION (CONTINUED) I
11. 115 KY UBON RATCHATHANI 2 - KANTHARALAK LINE AND SUBSTATIONS
a. 1998 -Construction of 11 SkV Ubon Ratchathani 2 - Kantharalak SC on DC/ST 795 MCM ACSR 55 km
-Installaton of 115-22-11 kV2x50 MVA Transformer at KamtharalakSubstation_. Base Case …-----b. 1998 -Construction of 11 5kV SI Sa Ket - Kantharalak SC on DC/ST 795 MCM ACSR 65 km
_ -Installaton ot1 15-22-11 kV 2xs0 MVA Transformerat Kantharalak Substation. 27.22 1.0018 >150.0 %_ c. 1998 _ Installaton ot Gas Turbine Power Plants at Kantharelak 449.55 1.02941 83.90 _
12. 115 KV SURIN - SANGKHA LINE AND SUBSTATIONSa. 1998 - Construction of 1 15 kV Surin - Sangkha SC on DC/ST 795 MCM ACSR 49 km
- Installationo '115-22-11 kV2xs5oMVATransrormeratSangqha uLbstation. -_____- Base Cas e …--__b. 1998 -Construction o1 115 kV Si Sa Ket - Sangkha SC on DC/ST 795 MCM ACSR 74 km
- Installatton o 115-22-11 kV 2x5oMVA Transo as n. 92.40 1.0061 >150.0 %c. 1998 -Constrnction of22 kV Surin - Sangkha 2xDC with AVR 185 sq.mm. AAC 66 km and
- Installabon of 115-22-11 kV 2xS oMVA Transformer at Sangkha Substation._ 2000 -Construction f 115 kV Surin-Sha _SC_ojn DC/ST 795 MCM ACSR 49 km 42.95 1.0028 30.63 S
SOUTHERN REGION13. 230:KV NAKHON Si THAMARAT - THUNG SONG - SURAT THANI LINES AND SUBSTATIONS
a. 1998 - Reconstruction of 115 kV Nakhon Si Thammarat - Thung Song to230/1 15 kV DC/ST 1272 MCM ACSR, 54 km
- Reconstruction of 15s kV Surat Thani-Thung Song to 230 kV DC/ST 2xr1272 MCM ACSR. 122 km- Installation of 2x200 MVA Transformers at Thung Song Substation.
2003 - Conversion o1 115/230 kV Nakhon Si Thammarat - Thung Bon ire to energized at 230 kV B-----Base Case-b. 1995 - Reconstruction of 115 kV Nakhon Si Thammarat - Thung Song to 230 kV DC/ST 1,272 MCM ACSR. 54 m
- Construction of 230 kV Surat Thani - Nakhon Si Thammara DC/ST 2x1272 MCM ACSR 145 km- Installabon of 2x200 MVA Transformers at Thung Song Substation.
2006 --insfallationof xlooMvATransformerat suraf Than; Substation ___ 569.14 1.0172 107.18 %c. 1998 - Reconstruction of 115kV Nakhon Si Thammarat - Thung Song to 230kV DC/ST 1,272 MCM ACSR, 54km
- Construction or230kV Khanom - Nakihon Si Thammarat DC/ST 2x1272 MCM ACSR 98 km- Installatonof2x200MVA Transformers at Thu.o Sonm Sibrgati.n
2006 - Installatonof1x100MVATransformer-atSurat Thani-substatior _ 64.73 1.0020 32.62 jd. 1998 - Reconsttwetion of 115 kV Surat Thani-Thung Song to 230kV DC/ST 2x .272 MCM ACSR, 122 km
- Installabon of 2x200 MVA Transtormers at Thung So ng Substation.- Construction of new 230 kV Phattalung Substation and Termination of 230 kV
___________ Nakhon Si Thammarat-Fkhattalung and 230hV Thung Song-Khong Njae to Pnattlung Substation 91.47 > 150.0 94. 230 KV KHLONG NGAE - YALA LINES AND SUBSTATIONS
a. 1998 -Construction of 230kV Khlong Ngae-Yala DC/ST 1272 MCM ACSR. 120 km I I_-(using existing Hat Yai 2-Ye a PW)and installation of 2x0OOMVA Transformer at Yala Substation.… Base Case…-----
b. 1998 -Construction of 230/115 kV Khlong Ngae-Yala DC/ST 1272 MCM ACSR, 120 km(using existing HY2-YL ROW) and installation of t x200 MVA Transformer at Khlong Ngae
2006 - Conversion o1230/115 kV Khlong Ngae-YalaOC/ST 1272 MCM ACSR to be energiZed at 230kV __k _ 108.78 1.0053 41.25 %c. 1998 -Construction01230kVKflongNgae-Yala DC/ST 1272MCMACSR, 120km
(using new ROW) and Installaton of 2x200 MVA Transformer at Yala Substation. 251.45 1.0122 > 150.0 %5. 230/1 15 KV PHANGNGA - PHUKET JUNCTION - PHUKET 2 LINES AND SUBSTATIONS
a. 1998 -Construction of 230/t11 kVPhangnga-PhuketJunction (Future Phuket 3 Substation)DC/ST 1.272 MCM ACSR, 76 km Initially energized at 115 kV(using ROW of existing 115 kV Phangnga-Phuket Junction 150 sqmm AAAC line) and
- Construction of 1 15 kV Phuket Junction-Phuket 2 SC compact line, 2x795 MCM ACSR 12 km |and connect with one cot of new 230/115 kV Pnangnga-Phuket Junction line and
- Connection of existing 1 15 kV Phuket Junction-Phuket 2 with another cot Ofnew 230/1i5kV Phangnga-Phuket Junction line and
- Replacement of 2x1tOD MVA Transformer at R_atjp1a_ha Substation with 2x200 MVA B - -=-Base Case--…---b. 1995 - Sameas*a.-but use2x795MCMACSR conductor for ll5kVPhangnga-PhuketJunctionline 1
2002 - Construction of 115 kV Phuket 3 Substation at Phuket Junction and Terminate 2 cots of new 115kV I IPhangrnga-Phuket Junction and existing 1 15 kV Phangnga-Phuket t to Phuket 3 Substation andreconstruction of the existing 115 kV Phangnga -Phuket 1 from Phangnga to Phuket 3 to DC/ST2x795 MCM ACSR, 70km _ _ 108.56| 1 .0047 > 150.0 %S
c. 1998 - Construction o1230 kVPhuket 3 Substation at Phuket Junction and reconstrucson of existing 11 5kV iIFRailaprabha-Phangnga and Phangnga-Phuket Junction to 230kV Rallaprabha-Phuket 3 DC/ST I1,272 MCM ACSR, i49kmaniterminate2 cots of existing IlskVPhangnga-Phuktt I toPhuyket3
- Installation of 2x200 MVA transformer at Phuket 3 Substation2004 -Construction of 115 kV Phuket 2-Phuket Junction SC CoTpact line, 2x795 MCM ACSR 121km 1160.74 1.0069 N.A.
1:15 KV YALA -NARATHIWAT LINE AND SUBSTATIONSa. 1998 - Constructlon of 1 15 kV Yala - Narathiwat SC on DC/ST 795 MCM ACSR, 61 km B- - ase Case- - -- …b. 1998 |-Constructionof lskvPattani - Narathlwat SC onDC/ST 795 MCM ACSR, 80km 137.031.0081 _50.0_
C. 1998 -ConstrLctionofII5kVYala-Narathiwat DC/ST 795MCMACSR 61km 23.77 1.00141 >150.0 %I21-Mar-95
04:19 PM
Table 2.1 Summary Result of Economic Analysis in TS. 9________ ________ ________(C9NTNUED) _ __ _ _ _ _ _ _ _ _
No. Fiscal Description Net P.V. B/C EqualizecYear @10 %DR. Ratio Discount
(MTHB) RateSOUTHERN REGION (CONTINUED) I
17. 115 KV SURAT THANI - BAN DON UNE AND SUBSTATIONSa. 1998 |-Stringing 2ndcctOtI15kVSuratThani-BanDon477MCMACSR. 13.4km
2001 -Constructionoft 5kVPbunphin-Banon SC onDC/ST 795MCM 10okm 7ae 1.se-b. 1998 - ConstrLctionof ttSkVPhunphin-BanDon SConDC/ST795MCM ACSR. I0kmand I
- Reconstruction of 115 kV Surat Thnrs-Phunprhin to be SC on DC/ST 795 MCM ACSR, 6.2 km2003 - Stringing 2nod cot of 1 I5 kV Surat thani-Phunphin795 MCM ACSR 22.20 1.0012 >150.0 9
c . 1998 - Irstallabon ot Gas Turbine Power Plants at Ban Don Substation 5164.1 1 1.2760 >150.0 9NORTHERN REGION
18. CONVERSION OF MAE MOH 3- CHAING RAI FROM 115 KV TO 230 KVa. 1998 - Conversion of 230/115 kV Mae Moh 3-Chang Ral DC/ST 1.272 MCM ACSR,200 km
to energized at 230 kV-Instaliation of 2x200 MVA Transformer at Chiang Ral Substation
2006 - Installabon of 1 x200 MVA Transformer at Mae Moh 3 Substation ------ Base Case- - - - -b. 1998 - 115 kV Phayao - Chiang Rai SC on DC/ST 795 MCM ACSR,80 km
-Installabon of 1 x200 MVA Transtormer at Mae Moh3 Substation1999 - Addition of Capaotor Bank2001 - Conversion of 230/115 kV Mae Moh 3-Chiang Rai DC/ST 1.272 MCM ACSR,200 km to be energized at 230 26.1
-Installaton of 2x200 MVA Transformer at Chiang Ral Substation ___ _ 226.96 1.0130 >_150.0___C. 1998 - Tenmination oft I s kV Mae Moh 3 - Chiang Rai to Phayao 1,272 MCM ACSR. I km
-Installabon of 11 x200 MVA Transformer at Mae Moh 3 Substation1999 - Addition of Capackor Bank2001 - Conversion o' 230/11 5kV Mae Moh 3-Cheang Rai DC/ST 1.272 MCM ACSR.200 km to be energmed at 230k
- Installabon of 2x200 MVA Transformer at Chiang Rai Substation _ 61.591 1.0035 22.63 %19. 115 KV LAN KRABU - KAMPHAENG PHET LINE AND SUBSTATIONS
a. 1998 -Construction of 115kV Lan Krabu - Kamphaengphet DC/ST 795 MCM ACSR, 47 km2006 - Construction o I 15kV Bhumibol - Tak I SC on DC/ST 785 MCM ACSR, 47 km ------ Base Case- - - - -
b. 1998 - Terminaton o115 kV Tak 1 - Kamphaengphet to Tak 2 SC/ST 477 MCM ACSR, 3 km-Installaton of 2x200 MVA Transformer at Tak 2 Substation-Construction of I 15kV Bhumibol - Tak 1 SC on DC/ST 795 MCM ACSR, 47 km- Conrstruction of 11S kV Tak 2- Kamphaengphet SC on DC/ST 795 MCM ACSR. 53 km. 246.07! 1.0140 > 150.0 9W
c. 1998 - Terminarton of one cot of 230 kV Shumibol - Nakhorn Sawan lime to Kamphaengphet, 2 km- Installabon of 2x200 MVA Transformer at Kamphaengphet Substatlon
2006 - Terminatbon of 2nd cot of 230 kV Bhumibol - Nakhon Swan lIme to Kamphaengphat. 2 km 163.04 1.0093 >150.0920. 116 KV MAE MOH 3- LAMPANG 2 UNE AND SUBSTATIONS
a. 1998 - Construction of 115 kV Mae Moh 3- Lampang 2 DC/ST 2x795 MCM ACSR. 27 km (New R-O-W)- Termination of two cot of 115 kV Lamphun 2 - Mae Moh 2 line to Lampang 2
1999 - Installaton of 1x200 MVA Transformer at Chiang Mai 3 Substation2000 -Reconstructionof 115kV MaeMoh2-Lampang 1-Lamphun 1 tobe230kV Mae,Molh3-Saraphi
DC/ST 2x1,272 MCM ACSR. 124.4 km and 1 15 kV Mae Moh 3- Lampang 1 DC/ST 795 MCM ACSR. 41.4 knand 115 kV Lampang 2-Lamphun I DC/ST 785 MCM ACSR 16 1 km
-Terrninabon of 115 kV Lamphun 2 -Chiang Ma 2 line to Saraphl Substation DC/ST andReconstruebon of0115kV Lamphun 2-Saraphiltobe DC/ST 2x795 MCM ACSR. 10km
-installaton o121200 MVA Transformer at Saraphi Substation ------…Base Case- - - - -b. 1998 - Reconstnrction of 115kV Mae Moh 2-Lampang I-Lamphun ' tobe 230kV Mae Moh 3-Saraphi i
DC/ST 2x1,272 MCM ACSR, 124.4 km and 115 kV Mae Moh 3- Lampang I DC/ST 795 MCM ACSR,41.4 krand 115 kV Lamphun 2-Lamphun 1 DC/ST 795 MCM ACSR 16 1 km
- Terminaton of 1115 kV Lamphun 2-Chiang Mal 2 line to Saraphi Substation DC/ST andReconstnrction of 115 kV Lamphun 2 - Saraphi to be DC/ST 2x795 MCM ACSR. 10 km I
-rInstallation of 2x200 MVA Transformer at Saraphi Substation .2000 - Constnrction of 115 kV Mae Moh 3- Lampang 2 DC/ST 2x795 MCM ACSR. 27 km (New ROW) I I2006 - Installaton of 1 x200 MVA Transformer at Chiang Mal 3 Substation 53.20 1.00331 N.A
c. I1998 - Termtnabon of230 kV Mae Moh 3 - Chiang Mai 3 line and 115 kV Lampang 2- Lamphun 2 line to Hang Ch 0N- Installaton of 2x200 MVA Transformer at Hang Chat Substation
2000 - Reconstruction of 115 kV Mae Moh 2-Lampang I -I.amphun I to be 230 kV Mae Moh 3-SaraphiDC/ST 2x1.272 MCM ACSR, 124.4 km and 115 kV Mae Moh 3- Lampang I DC/ST 795 MCM ACSR.41 .4kando 115 kV Lamphun 2-Lamphun I DC/ST 795 MCM ACSR 1 6. 1 km I
- Termination o1115 kV Lamphun 2 -Chiang Ma 2 ine to Saraph1 Substation DC/ST andReconstruction o1 115 kV Lamphun 2 - Sarapht to be DC/ST 2x795 MCM ACSR, 10 km
- Installabon of 21200 MVA Transformer at Saraph, Substation2006 -Reconstruction of 115 kV Saraphi - Chiang Mai 2 line to be DC/ST 2x795 MCM ACSR, 16.1 km 267.08|1. >150.0 s
21. t115 KV CHIANG MAI 2- MAE TAENG LINE AND SUBSTATIONa. 1998 - Construction of 115 kV Chiang Mai 2- Mae Taeng SC on DC/ST 795 MCM ACSR. 42 km
- Installation of 2x50 MVA Transforner at Mae Taeng sustation. _ _ __ |------EBase Case- - - - -b. 1998 - Installation of Diesel Power Plants at Mae Taeng _ 573.501 1.03871 52.37%C. 1998 |-Installabon of Gas Turbine Power Plants at Ma.Taeng _T __ 612.56 1.0413l 110.56X
21 -M--604: 19 PI
-6-
3. i...t tLIiA ArN v A SSUP ivirTIONS r n r tJ1VIIC A'NALYSIS OF
SUBPROJECTS
3.1 Methodology of Analysis The economic analysis is made to find out the
least-cost program to serve the electricity demand in each project area. The
transmission system expansion program which includes the proposed subproject is
compared with the other two or three possible alternatives. The benefit/cost ratio (B/C
ratio), net present value (NPV) and equalized discount rate (EDR) are calculated to
indicate that the proposed subproject is included into the least-cost program. The
discount rate of 10 % is used to determine the least cost solution.
3.2 Alternative Transmission System Expansion Program Details of three or
four possible transmission system expansion alternatives to each subproject are
described in Section 4.
3.3 Capital Cost of Alternatives All capital costs are estimated based on 1994
price level. The cost without import duties and taxes, interest during construction
(IDC), and escalation are used in the study.
3.3.1 Transmission System The details of cost estimate of each proposed
subproject is shown in Volume I (Main Report). The cost estimate of transmission
system included in each alternative plan are based on 1994 constant price including
engineering, supervision and physical contingencies using the same unit price for each
subproject.
-7-
3.3.2 Distribution System 'lhe capital cost of the distribution system is
estimated based on the following unit price: -
22 kV 33 kV
a) Construction of distribution line
185 sq.mm.AAC conductor (MTHB/km)
- Single Circuit Structure 0.395 0.433
- Double Circuit Structure 0.777 0.859
- Single Circuit on D)ouble
Circuit Structure 0.424 0.469
- Stringing 2nd Circuit 0.394 0.436
b) Aerial Cable (MTHB/km/cct) 0.924 1.271
c) Automatic Voltage Regulator (AVR)
(MTHB/Set) 5.500 7.500
d) Switchgear (for I feeder) 2.000 2.000
e) Installation of one bank of
50 MVA Transformer at the
Terminal Substation 30.300 30.300
3.3.3 Diesel Power Plant The capital cost of 2.5 MW diesel power plant
used in the study is 20,600 THB/kW (USD. 792/kW).
3.3.4 Gas Turbine Power Plant The capital cost of 25 MW gas turbine
unit is estimated at 15,120 THB/kW (USSD. 582/kW).
-8-
3 4 Economic Life The economic lives of various project elements used in the
study are
Years
Transmission and Distribution Line 40
Substation and Equipment 25
Diesel Power Plant 15
Gas Turbine Power Plant 15
3.5 Operation and Maintenance Cost (O&M Cost) The O&M cost for various
types of project is assumed to be a fixed percentage of capital cost as follows
% of Capital Cost
Transmission Line 1.0
Distribution Line 1.0
Substation and Equipment 2.0
Diesel Power Plant 3.0
Gas Turbine Power lPlant 3.0
3.6 Capacity and Energy Cost of the 'T'ransmission and Distribution
Alternatives
Since the transmission and distribution system alternative do not produce
any generating capacity to the power system so when these alternatives are compared
with the installation of diesel or gas turbine power plant alternative, the cost of
producing power and energy to the system must be included in the cost of transmission
and distribution system alternative.
The Long Run Marginal Cost (LRMC) of EGAT's overall power
development plan is used to represent the cost of producing power and energy to the
system. The LRMC of capacity cost is calculated by using Average Incremental Cost
(AIC) concept, which is the ratio of discounted investment cost corresponding to
-9
EGAT's Power Development Plan during 1995-2004 to the discounted value of
incremental power of the same period. The LRMC of energy is calculated as a
weighted average, with the weights depending on the share of future energy generation
by the different types of power plant during the same period.
The capacity and energy cost based on EGAT's Power Development Plan
(PDP 95-01), at 1994 price level are:
Capacity Cost = 28,255.90 THB/kW (USD. 1,108.1/kW)
Energy Cost = 0.7117 THB/kW (US.d 2.791/kW)
3.7 Losses in Transmission and Distribution System
Besides the difference in investment cost and O&M cost between each
alternative, the difference in EGAT's power system losses is also taken into account in
the least cost solution study. The capacity loss (MW) is adopted from power flow study
of the respective alternative. The energy loss (GWh) is calculated from the capacity
loss and loss factor using these equations as lollows:
Energy Loss (GWh) = Capacity Loss (MW) x 8.76 x Loss Factor
Loss Factor = 0.1 (Load Factor) + 0.9 (Load Factor)2
The cost of losses used in the study are also adopted from EGAT's LRMC
as follows
Cost of Capacity Loss = 2,997.40 THB/kW-yr
Cost os Energy Loss = 0.7117 THB/kWh
3.8 Heat Rate and Fuel Cost of Alternative Power Plant
2.5 MW Diesel Plant = 2,508.7 kcalUkWh
2V T.V'7 G Turbiae Piatit = 3,i90.0 kcailkWh
Diesel Oil Price (Without Taxes) = 4.6224 THB/Litre
Heating Value of Diesel Oil = 8,959.6 kcal/Litre
-10-
4. DETAILED ECONOMIC ANALYSIS OF EACH SUBPROJECT
-11-
SUBPROJECT NO.1230/115 KV BAN PONG 2 - BAN PONG 1 - NAKHON CHAISI -
SAM PRAN 2 LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.1.
b) Alternative Plans The three possible alternative plans to serve the same technicalobjectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 19
- Reconstruction of the existing Ban Pong 2 - Ban Pong I - Nakhon Chaisi
- Sam Phran 2 from 115 kV double circuit line to 230 kV double circuit line, using2x1272 MCM ACSR conductor, a distance of approximately 43 km, initially energizedat 115 kV.
The economic cost is 583.2 MTIIB.
Year 2006
- Construction of 230 kV Ban Pong 2 - Sai Noi, double circuit line, using
1272 MCM ACSR conductor, a distance of approximately 53.6 km.
- Reconstruction of the existing 230 kV Ratchaburi 2 - Ban Pong 2 from
double circuit line using 1272 MCM ACSR conductor to double circuit line using2x1272 MCM ACSR conductor, a distance of approximately 42 km.
- Installation of lx200 MVA 230/115 kV transformer at Ban Pong 2
Substation.
The economic cost is 946.8 MTHB.
-12-
Alternative B:
Year 1998
- Reconstruction of the existing Ban Pong 2 - Ban Pong 1 - Nakhon Chaisi
- Sam Phran 2 from 115 kV double circuit line to 230 kV double circuit line using
2x1272 MCM ACSR conductor, a distance of approximately 43 km, the Nakhon Chaisi
- Sam Phran 2 line section will be initially energized at 115 kV.
- Installation of 3x200 MVA 230/115 kV transforners at Nakhon Chaisi
Substation.
The economic cost is 1,046.6 MTHB.
Year 2006
- Construction of 230 kV Ban Pong 2 - Sai Noi line, double circuit steel
tower, using lx1272 MCM ACSR conductor, a distance of approximately 54 km.
- Reconstruction of the existing 230 kV Ratchaburi 2 - Ban Pong 2 from
230 kV double circuit line using 1272 MCM ACSR conductor to double circuit line
using 2x1272 MCM ACSR conductor, a distance of approximately 42 km.
The economic cost is 852.4 MTHB.
Alternative C
Year 1998
- Construction of 230 kV Sai Noi - Nakhon Chaisi - Sam Phran 2 line,
double circuit steel tower, using 2x 1272 MCM ACSR conductor, a distance of
approximately 40 km, the Nakhon Chaisi - Sam Phran 2 line section will be initially
energized at 115 kV.
-13-
- Installation of 2x200 MVA 230/115 kV transformer at Nakhon ChaisiSubtation.
The econnom.ic cost is 9186 MAATHB
Year 1999
- Construction of 230 kV Ban Pong 2 - Sai Noi line, double circuit steeltower, using 1x1272 MCM ACSR conductor, a distance of approximately 54 km.
The economic cost is 463.9 MTHB.
Year 2006
* Reconstruction of the existing 230 kV Ratchaburi 2 - Ban Pong 2 from
double circuit line using 1272 MCM ACSR conductor to double circuit line using2x1272 MCM ACSR conductor, a distance of approximately 42 km.
- Installation of 1x200 MVA 230/115 kV transformers at Nakhon ChaisiSubstation.
The economic cost is 388.5 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are givenin Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 34,440.95
Alternative B 34,529.51
Alternative C 34,942.10
-14-
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%_
Alternative A VS. Alternative B 88.56 1.0026 N.A.
Alternative A VS. Alternative C 501.16 1.0146 >150.00
Results of the analysis have led to the conclusion that the construction of
230/115 kV Ban Pong 2 - Ban Pong I - Nakhon Chaisi - Sampran 2 transmission
system project is the least cost alternative.
-15-
Table 4.1
Load Forecast for Ban Pong 1, Nakhon Chaisiand Sam Pran 2 Substations
_________________________________________ Subproact No.1
Fiscal Peak Demand Energy Demand Load Factor
Year MW % Increase GWh % Increase (%)
1994 304.18 - 1876.92 - 70.44
1995 205.22 a/ -32.53 1004.72 -46.47 al 55.89
1996 223.73 9.02 1085.25 8.02 55.371997 243.23 8.72 1214.36 11.90 56.99
1998 263.80 8.46 1336.80 10.08 57.851999 285.48 8.22 1498.58 12.10 59.922000 308.36 8.01 1682.78 12.29 62.30
2001 332.54 7.84 1880.99 11.78 64.57
2002 358.11 7.69 2083.89 10.79 66.43
2003 385.24 7.58 2293.73 10.07 67.972004 414.08 7.49 2517.70 9.76 69.41
2005 444.86 7.43 2760.59 9.65 70.84
2006 477.72 7.39 3023.78 9.53 72.26
Note: al Some loads are transfered to the PEA's 115kV systems which receive power from 230/115 kV
Sam Phran 1 and Ban Pong 2 Substaton.
-16-
Table 4.2Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 1; Subproject No.1
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 81054.63 81155.40 0.9988 -100.776.00 59830.04 59840.40 0.9998 -10.368.00 45038.37 44989.05 1.0011 49.32
10.00 34529.61 34440.95 1.0026 88.5612.00 26924.79 26810.77 1.0043 114.0214.00 21324.71 21194.62 1.0061 130.0916.00 17132.33 16992.63 1.0082 139.7018.00 13944.90 13800.07 1.0105 144.8320.00 11486.26 11339.41 1.0130 146.8522.00 9564.14 9417.43 1.0156 146.7124.00 8042.59 7897.51 1.0184 145.0826Q00 6824.14 6681.72 1.0213 142.42
Equalized Discount Rate is Not Applicable
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit - - Cost Net Benefit
4.00 81843.98 81155.40 1.0085 688.586.00 60448.42 59840.40 1.0102 608.028.00 45537.13 44989.05 1.0122 548.08
10.00 34942.10 34440.95 1.0146 501.1612.00 27273.50 26810.77 1.0173 462.7414.00 21624.72 21194.62 1.0203 430.1116.00 17394.24 16992.63 1.0236 401.6018.00 14176.26 13800.07 1.0273 376.1920.00 11692.62 11339.41 1.0311 353.2122.00 9749.64 9417.43 1.0353 332.2124.00 8210.40 7897.51 1.0396 312.8926.00 6976.76 6681.72 1.0442 295.04
Equalized Discount Rate is Greater Than 150%
Transmission System Planning Division21 -Mar-95
11:05AM
-17-
SUBPROJECT NO.2
115 KV BO WIN - BAN BUNG LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.3.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1997
- Construction of 115 kV Bo Win - Ban Bung line, double circuit steel
tower, using 2x795 MCM ACSR conductor. a distance of approximately 27 km.
The economic cost of the project is 206.8 MTHB.
Year 2001
- Installation of lx200 MVA 230/115 kV transformer at Bo Win
Substation.
The economic cost is 81.6 MTHB.
Alternative B
Year 1997
- Rolo the existing Ao Phai - Si Racha - Ban Bung iine from
115 kV single circuit line to 115 kV Ao Phai - Ban Bung double circuit line, using
2x795 MCM ACSR conductor, a distance of approximately 38 km.
-18-
The economic cost of the project is 277.6 MTHB.
Year 2004
- Installation of 1 x200 MVA 230/115 kV transformer at Bo Win
Substation.
- Installation of l x200 MVA 230/115 kV transformer at Ao Phai
Substation.
The economic cost is 189.0 MTHB.
Alternative C
Year 1997
- Construction of 230 kV Bo Win - Ban Bung line, double circuit steel
tower, using 1,272 MCM ACSR conductor, a distance of approximately 27 km.
- Installation of 2x200 MVA 230/115 kV transformer at Ban Bung
Substation.
The economic cost of the project is 531.7 MTHB.
Year 2004
- Installation of Ix200 MVA 230/115 kV transformer at Bo Win
Substation.
The economic cost is 81.9 MTHB.
-19-
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Econom..ic A.a;ivsis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 25,346.84
Alternative B 25,436.86
Alternative C 25,590.21
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%)
Alternative A VS. Alternative B 90.02 1.0036 >150.00
Alternative A VS. Alternative C 243.3.7 1.0096 >150.00
Results of the analysis have led to the conclusion that the construction of115 kV Bo Win - Ban Bung transmission system project is the least cost alternative.
-20-
Table 4.3Load Forecast for Ban Bung Substation
Subprojee No.v
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 49.62 - 281.32 - 64.721995 57.67 16.22 318.10 13.07 62.971996 68.22 18.29 373.98 17.57 62.581997 79.88 17.09 437.59 17.01 62.541998 93.05 16.49 506.65 15.78 62.161999 102.39 10.04 572.74 13.04 63.862000 110.33 7.75 620.77 8.39 64.232001 118.81 7.69 672.26 8.29 64.592002 127.84 7.60 727.29 8.19 64.942003 137.44 7.51 786.01 8.07 65.282004 147.63 7.41 848.57 7.96 65.622005 158.42 7.31 895.06 5.48 64.502006 169.85 7.21 985.76 10.13 66.25
. \~~~~~~~~~~~-1
Table 4 .4Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 1; Subproject No.2
Cost Stream A!ternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 57805.75 57667.75 1.0024 138.006.00 43079.88 42959.86 1.0028 120.028.00 32783.09 32679.12 1.0032 103.97
10.00 25436.86 25346.84 1.0036 90.0212.00 20093.56 20015.47 1.0039 78.1014.00 16135.04 16067.08 1.0042 67.9616.00 13151.03 13091.65 1.0045 59.37i 8.00 10864.6.3 10812.54 1.0048 52.1020.00 9085.87 9039.96 1.0051 45.9222.00 7682.31 7641.66 1.0053 40,6524.00 6560.18 6524.03 1.0055 36.1526.00 5652.14 5619.85 1.0057 32.29
Equalized Discount Rate is Greater Than 150%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B!C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 57982.92 57667.75 1.0055 315.176.00 43247.37 42959.86 1.0067 287.518.00 32942.97 32679.12 1.0081 263.84
10.00 25590.21 25346.84 1.0096 243.3712.00 20240.94 20015.47 1.0113 225.4714.00 16276.76 16067.08 1.0131 209.6916.00 13287.31 13091.65 1.0149 195.6618.00 10995.63 10812.54 1.0169 183.1020.00 9211.74 9039.96 1.0190 171.7822.00 7803.19 7641.66 1.0211 161.5324.00 6676.23 6524.03 1.0233 152.2026.00 5763.53 5619.85 1.0256 143.68
Equalized Discount Rate is Greater Than 150%
Transmission System Planning Division21 -Mar-95
11.07 AM
-22-
SUBPROJECT NO.3115 KV THA WUNG SUBSTATIONS AND LINE CONNECTION
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.5.
b) Alternative Plans The four possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Construction of I 15 kV Tha Wung Substation at the intersection between
115 kV Lop Buri 1 - Sing Buri and 115 kV Ang Thong 2 - Lop Buri 2 lines and
terminate these two 115 kV lines to Tha Wung Substation.
- Installation of lx200 MVA 230/115 kV transformer at Ang Thong ISubstation.
The economic cost is 271.5 MTHB.
Year 2002
- Construction of 115 kV Tha Wung - Lop Buri 1 line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 13 km.
The economic cost is 71.8 MTHB.
-23-
Alternative B:
Year 1998
- Reconstruction of the existing Ang Thong 1 - Sing Buri line from 115
kV single circuit line to double circuit line, using 2x795 MCM ACSR conductor, a
distance of approximately 34 km.
- Installation of lx200 MVA 230/115 kV transformer at Ang Thong I
Substation.
The economic cost is 345.7 MTHB.
Year 2002
- Construction of 115 kV Sing Buri - Lop Buri line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 27 km.
The economic cost is 172.6 MTHB.
Altemative C:
Year 1998
- Termination of one circuit of the existing Tha Tako - Ang Thong I line
to Sing Buri Substation.
- Installation of lx200 MVA 230/115 kV transformer at Sing Buri
Substation.
The economic cost is 363.1 MTHB.
-24-
Year 2002
- Construction of 115 kV Sing Buri - Lop Buri line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 27 km.
The economic cost is 172.6 MTHB.
Year 2006
- Installation of lx200 MVA 230/115 kV transformer at Ang Thong 1
Substation.
The economic cost is 94.6 MTHB.
AlterinaUve D
Year 1998
- Construction of 230/115 kV Tha Wung Substation and terminate oine
circuit of 230 kV Tha Tako - Thalan 3 and 115 kV Sing Buri - Lop Buri I to Tha
Wung Substation.
- Installation of 1 x200 MVA 230/115 kV transformer at Tha Wung
Substation.
The economic cost is 350.1 MTHB.
Year 2002
- Construction of 115 kV Tha Wung - Lop Buri I line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 13 km.
-25 -
The economic cost is 71.8 MTHB.
Year 2003
- Installation of lx200 MVA 230/115 kV transformer at Ang Thong 1
Substation.
The economic cost is 94.6 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 20,395.40
Alternative B 20,416.16
Alternative C 20,427.70
Alternative D 20,440.28
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%)
Alternative A VS. Alternative B 20.76 1.0001 N.A.
Alternative A VS. Alternative C 32.30 1.0016 N.A.
Alternative A VS. Alternative D 44.88 1.0022 N.A.
Results of the analysis have led to the conclusion that the construction of
115 kV Tha Wung Substation project is the least cost alternative.
-26-
Table 4.5
Load Forecast for Singburiand Lop Buri 1 Substations
.. _______________________________________ ,_____...______._ _.___ . -Subproect No.3
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 70.20 - 318.82 - 51.841995 80.29 14.37 374.04 17.32 53.181996 75.15 a/ -6.40 340.55 a/ -8.95 51.731997 79.75 6.12 369.17 8.40 52.841998 84.40 5.83 392.53 6.33 53.091999 89.17 5.65 416.99 6.23 53.382000 94.03 5.45 442.68 6.16 53.742001 98.99 5.27 469.57 6.07 54.152002 104.10 5.16 495.90 5.61 54.382003 109.40 5.09 523.96 5.66 54.672004 114.91 5.04 553.61 5.66 55.002005 120.67 5.01 585.41 5.74 55.382006 126.70 5.00 619.49 5.82 55.82
Note: a/ Some loads are transfered to PEA's 115 kV Systems which receive power from 115 kV
Lop Buri 2 Substation.
-27-
Table 4.6Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 1; Subproject No.3
Cost Stream Altarnative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost __ Net Benefit
4.00 47704.59 47760.13 0.9988 -55.546.00 35254.07 35270.41 0.9995 -16.348.00 26579.42 26572.37 1.0003 7.05
10.00 20416.16 20395.40 1.0010 20.7612.00 15954.47 15925.99 1.0018 28.4814.00 12666.58 12634.10 1.0026 32.4716.00 10202.61 10168.47 1.0034 34.1418.00 8326.74 8292.37 1.0041 34.3720.00 6877.39 6843.69 1.0049 33.7022.00 5742.14 5709.65 1.0057 32.5024.00 4841.55 4810.56 1.0064 30.9926.00 4118.69 4089.36 1.0072 29.33
Equalized Discount Rate is Not Applicable
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 47710.32 47760.13 0.9990 -49.816.00 35263.45 35270.41 0.9998 -6.968.00 26590.43 26572.37 1.0007 18.06
10.00 20427.70 20395.40 1.0016 32.3012.00 15965.96 15925.99 1.0025 39.9714.00 12677.73 12634.10 1.0035 43.6216.00 10213.30 10168.47 1.0044 44.8318.00 8336.94 8292.37 1.0054 44.5620.00 6887.12 6843.69 1.0063 43.4222.00 5751.43 5709.65 1.0073 41.7924.00 4850.46 4810.56 1.0083 39.8926.00 4127.26 4089.36 1.0093 37.89
Equalized Discount Rate is Not Applicable
Transmission System Planning Division21 - Mar-95
11:08AM
-28-
Table 4.6Summary Result of Economic Analysis
(continued)I
Project Transmission System Expansion Project No. 9Region 1; Subproject No.3
Cost Stream Alternative A
Benefit Stream Alternative D
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit _ Cost _ Net Benefit4.00 47786.05 47760.13 1.0005 25.926.00 35307.69 35270.41 1.0011 37.298.00 26615.17 26572.37 1.0016 42.81
10.00 20440.28 20395.40 1.0022 44.8812.00 15970.92 15925.99 1.0028 44.9314.00 12677.93 12634.10 1.0035 43.8216.00 10210.55 10168.47 1.0041 42.0818.00 8332.39 8292.37 1.0048 40.0220.00 6881.53 6843.69 1.0055 37.8322.00 5745.28 5709.65 1.0062 35.6324.00 4844.06 4810.56 1.0070 33.5026.0u 4120.6, 4089.36 1.0077 31.45
Equalized Discount Rate is Not Applicable
Transmission System Planning Division21 -Mar-95
11:12AM
-29-
SUBpROJECT NO.4115 KV THALAN 3 - SARABURI 1 LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.7.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Construction of 115 kV lhalan 3 - Saraburi I line, double circuit steel
tower, using 795 MCM ACSR conductor, a distance of approximately 15 km. This
transmission line will be constructed on the right-of-way of the existing 115 kV Thalan
1 - Saraburi 1 line.
- Construction of 115 kV 'Ihalan I - Thalan 3 line, single circuit on double
circuit steel tower, using 795 MCM AC'SR conductor, a distance of approximately 5 km.
This transmission line will be constructed on1 the right-of-way of the existing 115 kY
Thalan 1 - Saraburi 1 line.
The economic cost is 161.8 MTIIB.
Alternative B
Year 1998
- Reconstruction of the existing Thalan 1 - Saraburi I from 115 kV single
circui linie 'o LI . xV doubie circuit iine, using 795 MCM ACSR conductor, a distance
of approximately 18 km.
-30-
- Reconstruction of the existing 115 kV Thalan 1 - Thalan 3 from double
circuit line using 477 MCM ACSR conductor to double circuit line using 795 MCM
ACSR conductor, a distance of approximately 5 km.
The economic cost is 169.3 MTIIB.
Alternative C
Year 1998
- Construction of 115 kV Thalan 3 - Saraburi I line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 14 km.
- Termination of 115 kV Thalan I - Saraburi I at Thalan 3 substation and
reconstruction of the existing 115 kV Thalan I - Thalan 3 from single circuit line to
single circuit on double circuit line, using 795 MCM ACSR conductor, a distance of
approximately 5 km.
The economic cost is 153.9 MTIIB.
Year 2003
- Stringing 2nd circuit of the 115 kV Thalan 3 - Saraburi I line, using 795
MCM ACSR conductor, a distance of approximately 14 km.
The economic cost is 38.6 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
-31-
d) Results of Economic Analysis
1. Comparison of Present Value
P.AV. i 10 % DR. (MT!5B
Alternative A 25,500.61
Alternative B 25,510.64
Alternative C 25,511.58
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%)
Alternative A VS. Alternative B 10.03 1.0004 31.36
Alternative A VS. Alternative C 10.97 1.0004 25.28
Results of the analysis have led to the conclusion that the reconstruction
of 115 kV Thalan 1 - Saraburi I to 115 kV Thalan 3 - Saraburi I transmission system
project is the least cost alternative.
-32-
Table 4.7
Load Forecast for Saraburi 1 Substation
Subp,ropct No.4
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 44.40 - 246.24 - 63.31
1995 62.48 40.72 369.43 50.03 67.501996 68.78 10.08 413.67 11.98 68.661997 52.57 a/ -23.57 256.82 a/ -37.92 55.771998 57.15 8.71 278.71 8.52 55.671999 61.96 8.42 308.07 10.53 56.762000 67.07 8.25 341.46 10.84 58.122001 72.51 8.11 380.31 11.38 59.872002 78.33 8.03 416.76 9.58 60.742003 84.54 7.93 457.78 9.84 61.812004 91.18 7.85 505.60 10.45 63.302005 98.27 7.78 557.60 10.28 64.772006 105.86 7.72 614.18 10.15 66.23
Note a/ Some loads are transfered to PEA's 115 kV systems which receive power from 230/115 kV
Saraburi 2 Substation.
-33-
Table 4 . 8Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 1; Subproject No.4
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost _ __ Net Benefit
4.00 61301.64 61281.13 1.0003 20.516.00 44903.78 44887.66 1.0004 16.128.00 33538.75 33526.05 1.0004 12.71
10.00 25510.64 25500.61 1.0004 10.0312.00 19735.39 19727.47 1.0004 7.9214.00 15508.08 15501.86 1.0004 6.2316.00 12362.60 12357.73 1.0004 4.87i8.00 9985.61 9981.84 1.0004 '3.7620.00 8163.14 81S0.28 1.0004 2.8622.00 6746.81 6744.70 1.0003 2.1124.00 5632.17 5630.67 1.0003 1.5026.00 4744.65 4743.66 1.0002 0.99
Equalized Discount Rate = 31.36%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value. Present Value B/C Present ValueRate of of Ratio of(°/9) Benefit Cost ___ _ Net Benefit
4.00 61301.92 61281.13 1.0003 20.796.00 44904.75 44887.66 1.0004 17.098.00 33539.85 33526.05 1.0004 13.81
10.00 25511.58 25500.61 1.0004 10.9712.00 19736.04 19727.47 1.0004 8.5614.00 15508.39 15501.86 1.0004 6.5316.00 12362.56 12357.73 1.0004 4.8318.00 9985.25 9981.84 1.0003 3.4120.00 8162.51 8160.28 1.0003 2.2322.00 6745.95 6744.70 1.0002 1.2524.00 5631.11 5630.67 1.0001 0.4426.00 4743.43 4743.66 1.0000 -0.22
Equalized Discount Rate 25.28%
Transmission System Planning Division21 - Mar-95
11:13AM
-34-
SUBPROJECT NO.5115 KV RATCHABURI 2 - PHETCHABURI LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.9.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998
- Reconstruction of the existing 115 kV Ratchaburi 2 - Phetchaburi from
single circuit line to double circuit line, using 2x795 MCM ACSR conductor, a distance
of approximately 53 km.
The economic cost is 287.9 MTHB.
Alternative B
Year 1998
- Termination of the 2nd circuit of 230 kV Ratchaburi 2 -Prachuap Khiri
Khan line at Hua Hin Substation, using 1,272 MCM ACSR conductor, a distance of
approximately 10 km.
The economic cost is 156.3 MTHB.
-35-
Year 2006
- Construction of 115 kV Ratchaburi 2 - Phetchaburi line, single circuit
on double circuit steel tower, using 2x795 MCM ACSR conductor, a distance of
approximately 53 km.
The economic cost is 278.1 MTHB.
Alternative C
Year 1998
- Construction of 115 kV Ratchaburi 2 - Phetchaburi line, single circuit
on double circuit steel tower, using 2x795 MCM ACSR conductor, a distance of
approximately 53 km.
The economic cost is 306.0 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present. Value
P.V. at 10 % DR. (MTHB)
Alternative A 24,266.75
Alternative B 24,278.83
Alternative C 24,295.87
-36-
2. Net Present Value and B/C, Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%)
Alternative A VS. Alternative B 12.09 1.0005 12.77
Alternative A VS. Alternative C 29.12 1.0012 >150.00
Results of the analysis have led to the conclusion that the reconstruction
of 115 kV Ratchaburi 2 - Phetchaburi transmission system project is the least cost
alternative.
-37-
Table 4.9
Load Forecast for Phetchaburi, Cha Amand Hua Hin Substations
Subproyct No.5
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 71.60 - 401.85 - 64.071995 91.25 27.44 460.59 14.62 57.621996 99.57 9.12 504.38 9.51 57.831997 108.08 8.55 546.72 8.39 57.751998 116.77 8.04 584.31 6.88 57.121999 125.58 7.54 625.97 7.13 56.902000 134.58 7.17 670.21 7.07 56.852001 143.85 6.89 718.42 7.19 57.012002 153.18 6.49 762.81 6.18 56.852003 162.77 6.26 809.60 6.13 56.782004 172.64 6.06 859.76 6.20 56.852005 182.74 5.85 912.00 6.08 56.972006 193.12 5.68 966.32 5.96 57.12
-38-
Table 4.10Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 1; Subproject No. 5
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 57338.42 57288.57 1.0009 49.856.00 42236.38 42200.32 1.0009 36.068.00 31730.24 31707.07 1.0007 23.18
10.00 24278.83 24266.75 1.0005 12.0912.00 18895.39 18892.40 1.0002 2.9914.00 14937.06 14941.29 0.9997 -4.2316.00 11977.92 11987.72 0.9992 -9.8018.00 9730.99 9744.99 0.9986 -13.9920.00 7999.85 8016.91 0.9979 -17.0622.00 6647.90 6667.11 0.9971 -19.2124.00 -55787S3 5599.37 0.9963 -20.6426.00 4723.30 4744.81 0.9955 -21.51
Equalized Discount Rate = 12.77%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 57326.17 57288.57 1.0007 37.606.00 42234.25 42200.32 1.0008 33.938.00 31738.26 31707.07 1.0010 31.20
10.00 24295.87 24266.75 1.0012 29.1212.00 18919.91 18892.40 1.0015 27.5114.00 14967.53 14941.29 1.0018 26.2316.00 12012.91 11987.72 1.0021 25.1918.00 9769.30 9744.99 1.0025 24.3120.00 8040.46 8016.91 1.0029 23.5522.00 6689.98 6667.11 1.0034 22.8724.00 5621.64 5599.37 1.0040 22.2626.00 4766.51 4744.81 1.0046 21.70
Equalized Discount Rate is Greater Than 150%
Transmission System Planning Division21 - Mar-95
11:16AM
-39-
SUBPROJECT NO.6
115 KV PRACHIN BURI 2 - WATTHANA NAKHON LINE
AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.11.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative Ii.
Year 1998
- Construction of 115 kV Prachin Buri 2 - Watthana Nakhon line, single
circuit on double circuit steel tower, using 2X795 MCM ACSR conductor, a distance of
approximately 67 km.
The economic cost is 345.1 MTHB.
Alternative B
Year 1998
- Construction of 230 kV Prachin Buri 2 - Watthana Nakhon line, single
circuit on double circuit steel tower, using 1,272 MCM ACSR conductor, a distance of
approximately 67 km, initially energized at 115 kV.
The economic cost is 476.2 MTHB.
-40-
Alternative C:
Year 1998
- Construction of 230 kV Prachin Buri 2 - Watthana Nakhon line, single
circuit on double circuit steel tower, using 1,272 MCM ACSR conductor, a distance of
approximately 67 km.
- Installation of 1 x200 MVA 23 0/115 kV transformer at Watthana Nakhon
Substation.
The economic cost is 779.9 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
UI) AXResu'Ls ol ucor.omr.c fnaluz
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 18,571.47
Alternative B 18,679.47
Alternative C 18,893.61
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%)
Alternative A VS. Alternative B 108.00 1.0058 >150.00
Alternative A VS. Alternative C 322.14 1.0173 >150.00
-41-
Results of the analysis have led to the conclusion that the construction of
115 kV Prachin Buri 2 - Watthana Nakhon transmission system project is the least cost
alternative.
-42-
Table 4.11
Load Forecast for Watthana Nakhon Substation
Subprojct No.6
Fiscal Peak Demand Energy Demand Load Factor
Year MW % Increase GWh % Increase (%)
1994 29.66 - 123.39 - -
1995 34.15 15.14 149.92 21.50 50.111996 37.29 9.19 165.70 10.53 50.731997 40.52 8.66 138.03 -16.70 38.89
1998 43.89 8.32 155.45 12.62 40.431999 47.42 8.04 173.74 11.77 41.82
2000 51.18 7.93 194.66 12.04 43.42
2001 55.15 7.76 217.11 11.53 44.94
2002 59.36 7.63 243.57 12.19 46.84
2003 63.82 7.51 274.89 12.86 49.17
2004 68.57 7.44 304.88 10.91 50.76
2005 73.61 7.35 337.41 10.67 52.33
2006 78.96 7.27 372.66 10.45 53.88
-43-
Table 4.12Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 1; Subproject No.6
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit _ Cost ___ Net Benefit
4.00 44063.65 43926.65 1.0031 136.996.00 32461.79 32335.35 1.0039 126.448.00 24396.18 24279.43 1.0048 116.75
10.00 18679.47 18571.47 1.0058 108.0012.00 14551.81 144S1.63 1.0069 100.1714.00 11518.41 11425.25 1.0082 93.1716.00 9251.64 9164.76 1.0095 86.8818.00 7530.91 7449.68 1.0109 81.2320.00 6205.32 6129.20 1.0124 76.1222.00 5170.01 5098.52 1.0140 71.4924.00 4351.03 4283.76 1.0157 67.2726.00 3695.46 3632.06 1.0175 63.41
Equalized Discount Rate is Greater Than 150%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 44337.90 43926.65 1.0094 411.256.00 32714.02 32335.35 1.0117 378.678.00 24628.41 24279.43 1.0144 348.98
10.00 18893.61 18571.47 1.0173 322.1412.00 14749.57 14451.63 1.0206 297.9414.00 11701.35 11425.25 1.0242 276.1116.00 9421.15 9164.76 1.0280 256.3918.00 7688.22 7449.68 1.0320 238.5320.00 6351.53 6129.20 1.0363 222.3322.00 5306.10 5098.52 1.0407 207.5824.00 4477.89 4283.76 1.0453 194.1326.00 3813.88 3632.06 1.0501 181.82
Equalized Discount Rate is Greater Than 150%
Transmission System Planning Division21 -Mar-95
11:17AM
-44-
SUBPROJECT NO.7
230/115 KV MUKDAHAN 2 SUBSTATIONS AND 115 KV MUKDAHAN 2
- THAT PHANOM - NAKHON PHANOM LINES AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.13.
b) Alternative Plans The four possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998QI Lai-I i1~
- Termination of one circuit ot 230 kV Savannakhet - Roi Et at Mukdahan
2 Substation.
- Installation of 2x200 MVA 230/115 kV transformers at Mukdahan 2
Substation.
- Construction of 115 kV Mukdahan 2 - That Phanom line, double circuit
steel tower, using 795 MCM ACSR, a distance of approximately 36 km.
- Construction of 115 kV That Phanom - Nakhon Phanom line, single
circuit on double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 59 km.
The economic cost is 755.5 MTHB.
-45-
Year 2003
- Installation of lx20( MVA 230/115 kV transformer at Roi Et Substation.
The economic cost is 114.2 MTHB.
Year 2005
- Stringing second circuit of 115 kV That Phanom - Nakhon Phanom line,
using 795 MCM ACSR conductor, a distance of approximately 59 km.
The economic cost is 6237 MTHB.
Alternative B
Year 1998
- Termination of one circuit of 230 kV Thakhek - Sakon Nakhon 2 at
Nakhon Phanom 2 Substation.
- Installation of 2x200 MVA 230/115 kV transformers at Nakhon Phanomn
2 Substation.
- Construction of 115 kV Nakhon Phanom 2 - Nakhon Phanom 1 line,
double circuit steel tower, using 2x795 MCM ACSR conductor, a distance of
approximately 13 km.
- Construction of 115 kV Nakhon Phanom 1 - That Phanom line, double
circuit steel toWer, using 795 MCM ACSR conductor, a distance of approximately 59
km.
- Construction of 115 kV That Phanom - Mukdahan line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 45 km.
The economic cost is 865.5 MTHB.
-46 -
Year 2001
- Installation of lx200 MVA 230/115 kV transformer at Roi Et Substation.
The economic cost is 114.2 MTHB.
Year 2005
- Stringing second circuit of 115 kV That Phanom - Mukdahan line, using
795 MCM ACSR conductor, a distance of approximately 45 km.
The economic cost is 45.0 MTHB.
Alternative C
X.TA..A._ 1 AA OIL lai 17:70
- Construction of 115 kV Sakon Nakhon - That Phanom line, double
circuit line, using 795 MCM ACSR conductor, a distance of approximately 70 km.
- Construction of I 15 kV That Phanom - Nakhon Phanom line, single
circuit on double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 59 km.
- Construction of 115 kV That Phanom - Mukdahan line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 45 km.
The economic cost is 625.0 MTHB.
Year 2001
- Installation of I x200 MVA 230/115 kV transformer at Roi Et Substation.
The economic cost is 114.2 MTHB.
-47-
Year 2004
- Stringing second circuit of 115 kV That Phanom - Mukdahan line. usine
795 MCM ACSR conductor, a distance of approximately 45 km.
The economic cost is 45.0 MTHB.
Year 2005
- Stringing second circuit of 115 kV That Phanom - Nakhon Phanom line,
using 795 MCM ACSR conductor, a distance of approximately 59 km.
The economic cost is 62.7 MTHB.
Alternative D
Year 1998
- Construction of 115 kV Sakon Nakhon - That Phanom line, double
circuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 70
km.
- Construction of 115 kV That Phanom - Nakhon Phanom line, single
circuit on double circuit steel tower, using 795 MCM ACSR conductor, a distancc of
approximately 59 km.
- Construction of 115 kV Phon Thong - Mukdahan line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance ol
approximately 90 km.
- Stringing second circuit of 115 kV Roi Et - Phon Thong line, using 795
MCM ACSR conductor, a distance of approximately 45 km.
-48-
The economic cost is 847.7 MTHB.
Year 2001
- Installation of lx200 MVA 230/115 kV transformer at Roi Et Substation.
The economic cost is 114.2 MTHB.
Year 2004
- Stringing second circuit of 115 kV Phon Thong - Mukdahan line, using
795 MCM ACSR conductor, a distance of approximately 90 km.
The economic cost is 71.2 MTHB.
wy.. ~nr.nr
- Stringing second circuit of 115 kV That Phanom - Nakhon Phanom line,
using 795 MCM ACSR conductor, a distance of approximately 59 km.
The economic cost is 62.7 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix l.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 15,955.30
Alternative B 16,323.02
Alternative C 16,219.11
Alternative D 16,237.27
-49-
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%)
Alternative A VS. Alternative B 367.72 1.0230 >150.00
Alternative A VS. Alternative C 263.81 1.0165 31.53
Alternative A VS. Alternative D 281.97 1.0177 145.89
Results of the analysis have led to the conclusion that the constructionof 230/115 kV Mukdahan 2 Substation and line termination together with construction
of 115 kV Mukdahan 2 - That Phanom - Nakhon Phanom transmission system project
is the least cost alternative.
-sn-.
Tabie 4.13Load Forecast for Nakhon Phanom, That Phanom
and Mukdahan Substations__ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _ Subprojccl No.7
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%/0)
1994 55.74 - 216.28 - 44.291995 60.96 9.36 233.36 7.90 43.701996 63.62 4.36 248.33 6.41 44.561997 68.87 8.25 268.61 8.17 44.521998 74.12 7.62 289.06 7.61 44.521999 79.55 7.33 311.88 7.89 44.762000 85.18 7.08 336.07 7.76 45.042001 90.99 6.82 361.81 7.66 45.392002 97.04 6.65 386.94 6.95 45.522003 103.12 6.27 413.48 6.86 45.772004 109.90 6.57 441.43 6.76 45.852005 116.77 6.25 471.18 6.74 46.062006 123.96 6.16 503.09 6.77 46.33
-51-
Table 4.14Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 2; Subproject No. 7
Cost Sirearn Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 36337.10 35529.68 1.0227 807.416.00 27273.21 26666.22 1.0228 606.998.00 20898.87 20431.63 1.0229 467.24
10.00 16323.02 15955.30 1.0230 367.7212.00 12973.19 12677.83 1.0233 295.3714.00 10474.96 10233.26 1.0236 241.7016.00 8579.05 8377.94 1.0240 201.1218.00 7116.67 6946.81 1.0245 169.8620.00 5971.56 5826.19 1.0250 145.3722.00 5062.34 4936.48 1.0255 125.8524.00 4331.15 4221.07 1.0261 110.0826.00 3736.21 3639.08 1.0267 97.14
Equalized Discount Rate is Greater Than 150%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost _ _ Net Benefit
4.00 36250.36 35529.68 1.0203 720.686.00 27176.64 26666.22 1.0191 510.428.00 20797.03 20431.63 1.0179 365.40
10.00 16219.11 15955.30 1.0165 263.8112.00 12869.41 12677.83 1.0151 191.5814.00 10372.78 10233.26 1.0136 139.5216.00 8479.47 8377.94 1.0121 101.5318.00 7020.29 6946.81 1.0106 73.4820.00 5878.75 5826.19 1.0090 52.5622.00 4973.29 4936.48 1.0075 36.8124.00 4245.92 4221.07 1.0059 24.8526.00 3654.80 3639.08 1.0043 15.72
EnaJi7orizedr- Discount Rate = 31r.a
Transmission System Planning Division21-Mar-95
11:20AM
-52-
Table 4.14Summary Result of Economic Analysis
(Continued)
Project Transmission System Expansion Project No. 9Region 2; Subproject No.7
Cost Stream Alternative A
Benefit Stream Alternative D
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 36075.87 35529.68 1.0154 546.196.00 27096.99 26666.22 1.0162 430.778.00 20777.34 20431.63 1.0169 345.71
10.00 16237.27 15955.30 1.0177 281.9712.00 12911.24 12677.83 1.0184 233.4114.00 10429.07 10233.26 1.0191 195.8116.00 8544.17 8377.94 1.0198 166.2418.00 7089.44 6946.81 1.0205 142.6320.00 5949.72 5826.19 1.0212 123.5322.00 5044.35 4936.48 1.0219 107.8724.00 4315.95 4221.07 1.0225 94.8826.00 3723.05 3639.08 1.0231 83.98
Equalized Discount Rate = 145.89%
Transmission System Planning Division21 -Mar-95
11:22AM
-53-
SUBPROJECT NO.8115 KV UDON THANI 2 - NONG BUA LAM PHU LINE AND
SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.15.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Construction of 1 15 kV Udon T hani 2 - Nong Bua Lam Phu line, single
circuit on double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 61 km.
The economic cost is 176.7 MTHB.
Year 2001
- Construction of 115 kV Nong Bua Lam Phu - Loei line, single circuit
on double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 79 km.
The economic cost is 212.7 MTHB.
-54-
Year 2005
- Stringing 2nd circuit of 115 kV Udon Thani 2 - Nong Bua Lam Phu line,
using 795 MCM ACSR conductor, a distance of approximately 61 km.
The economic cost is 56.0 MTHB.
Alternative B
Year 1998
- Construction of 15 kV Udon Thani 2 - Nong Bua Lam Phu line, double
circuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 61
km.
The economic cost is 226.4 MTiHB.
Year 2001
- Construction of I1 5 kV Nong Bua Lam Phu - Loei line, single circuit
on double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 79 km.
The economic cost is 212.7 MTHB.
Alternative C
Year 1998
- Construction of 230 kV Udon Thani 2 - Nong Bua Lam Phu line, double
circuit steel tower, using 1,272 MCM ACSR conductor, a distance of approximately 61
km, initially energized at 115 kV.
The economic cost is 319.7 MTHB.
-55 -
Year 2001
- Construction of 115 kV Nong Bua Lam Phu - Loei line, single circuit
on double circuit steel tower, using 795 MCM ACSK conductor, a distance of
approximately 79 km.
The economic cost is 212.7 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 15,748.44
Alternative B 15,754.48
Alternative C 15,811.46
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) !(%
Alternative A VS. Alternative BI 6.04 1.0004 N.A.
Alternative A VS. Alternative C 63.02 1.0040 >150.00
Results of the analysis have led to the conclusion that the construction of
115 kV Udon Thani 2 - Nong Bua Lam Phu single circuit on double circuit line is the
least cost alternative.
-56-
Table 4.15
Load Forecast for Nong Bua Lam Phuand Loei Substations
Subpro*ct No.S
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 33.44 - 114.64 - 39.141995 55.97 a/ 67.37 196.94 a/ 71.79 40.171996 57.73 3.14 208.46 5.85 41.221997 62.20 7.74 225.51 8.18 41.391998 66.81 7.41 243.41 7.94 41.591999 71.50 7.02 263.50 8.25 42.072000 76.23 6.62 284.53 7.98 42.612001 81.05 6.32 306.84 7.84 43.222002 86.00 6.11 328.15 6.94 43.562003 91.11 5.94 350.70 6.87 43.942004 96.42 5.83 374.42 6.76 44.332005 101.98 5.77 399.88 6.80 44.762006 107.67 5.58 426.85 6.74 45.26
Note: a/ Highly demand increase due to transfered load from Udon Thani I Substation
to newly constructed Nong Bua Lam Phu Substation.
-57-
Table 4.16Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 2; Subproject No. 8
Cost A;trem Aiternati-ve A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(O) Benefit Cost Net Benefit
4.00 36256.30 36257.81 1.0000 -1.516.00 26928.60 26926.99 1.0001 1.608.00 20406.41 20402.29 1.0002 4.12
10.00 15754.48 15748.44 1.0004 6.0412.00 12372.95 12365.50 1.0006 7.4514.00 9870.27 9861.84 1.0009 8.4316.00 7986.36 7977.30 1.0011 9.06i8.00 6545.58 6536.15 1.0014 9.4220.00 5427.30 5417.74 1.0018 9.5722.00 4547.41 4537.85 1.0021 9.5524.00 3846.28 3836.86 1.0025 9.4226.00 3281.08 3271.88 1.0028 9.20
Equalized Discount Rate is Not Applicable
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 36316.69 36257.81 1.0016 58.886.00 26989.66 26926.99 1.0023 62.678.00 . 20465.98 20402.29 1.0031 63.68
10.00 15811.46 15748.44 1.0040 63.0212.00 12426.86 12365.50 1.0050 61.3614.00 9920.94 9861.84 1.0060 59.1016.00 8033.82 7977.30 1.0071 56.5218.00 6589.94 6536.15 1.0082 53.7820.00 5468.74 5417.74 1.0094 51.0022.00 4586.10 4537.85 1.0106 48.2524.00 3882.42 3836.86 1.0119 45.5626.00 3314.85 3271.88 1.0131 42.97
Equalized Discount Rate is Greater Than 150%
Transmission System Planning Division21 -Mar-95
11:24AM
-58-
SUBPROJECT NO.9115 KV ROI ET - PHAYAKKIAPHUM PHISAI - SURIN LINES
AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.17.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998
- Stringing 2nd circuit of 115 kV Roi Et - Phayakkhaphum Phisai line,
using 795 MCM ACSR conductor, a distance of approximately 84 km.
- Construction of 115 kV Phayakkhaphum Phisai - Surin line, single
circuit on double circuit steel tower using 795 MCM ACSR conductor, a distance of
approximately 80 km.
The economic cost is 302.2 MTHB.
Year 2003
- Stringing 2nd circuit of 115 kV Phayakkhaphum Phisai - Surin line,
using 795 MCM ACSR conductor,. a distance of approximately 80 km.
The economic cost is 66.0 MTHB.
-59-
Alternative B:
Year 1998
- Construction of 115 kV Si Sa Ket - Surin line, single circuit on double
circuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 95
km.
- Stringing 2nd circuit of 115 kV Roi Et - PhayakkhaphniWfiPhisai line,
using 795 MCM ACSR conductor, a distance of approximately 84km.
The economic cost is 335.6 MTHB.
Year 2003
* Stringing 2nd circuit of 115 kV Si Sa Ket - Surin line, using 795 MCM
ACSR conductor, a distance of approximately 95 km.
The economic cost is 74.1 MTHB.
Altenative C
Year 1998
- Construction of 115 kV Buri Ram - Surin line, single circuit on double
circuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 47
km.
- Construction of 115 kV Phayakkhaphum Phisai - Surin line, single
circuit on double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 80 km.
-60-
- Reconstruction of the existing 115 kV Nakhon Ratchasima 1 - Buri Ram
from single circuit line to double circuit line, using 795 MCM ACSR conductor, a
distance of approximately 111 km.
The economic cost is 633.4 MTHB.
Year 2003
- Stringing 2nd circuit of 115 kV Buri Ram - Surin line, using 795 MCM
ACSR conductor, a distance of approximately 47 km.
The economic cost is 49.3 MTHB.
Year 2006
- Reconstruction of the existing 115 kV Nakhon Ratchasima I - Nakhon
Ratchasima 2 from single circuit line to double circuit line, using 2x795 MCM ACSR
conductor, a distance of approximately 12 km.
- Stringing 2nd circuit of 115 kV Phayakkhaphum Phisai - Surin line,
using 795 MCM ACSR conductor, a distance ofapproximately 80 km.
The economic cost is 125.3 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
-61-
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 16,341.97
Alternative B 16,409.12
Alternative C 16,629.36
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(M iITB) (%)
Alternative A VS. Alternative B 67.15 1.0041 58.57
Alternative A VS. Altemative C 287.38 1.0176 >150.00
Results of the analysis have led to the conclusion that the line stringing
of 2nd circuit of Roi Et - Phayakkhaphum Phisai and construction of 115 kV
Phayakkhaphum Phisai - Surin transmission system project is the least cost alternative.
-62-
Table 4.17
Load Forecast for Phayakkhaphum Phisaiand Surin Substations
Subpropet NoS
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 52.80 - 215.83 - 46.661995 77.05 a/ 45.93 291.53 g 35.07 43.191996 83.28 8.09 321.81 10.39 44.111997 89.17 7.07 345.36 7.32 44.211998 95.11 6.66 369.52 7.00 44.351999 101.13 6.33 396.73 7.36 44.782000 107.15 5.95 425.02 7.13 45.282001 113.28 5.72 455.02 7.06 45.852002 119.47 5.46 482.85 6.12 46.142003 125.89 5.37 512.47 6.13 46.472004 132.57 5.31 543.62 6.08 46.812005 139.52 5.24 576.84 6.11 47.202006 146.76 5.19 612.64 6.21 47.65
Note: e/ Highly demand increase due to transfered load from Maha Sarekham and Roi Et Substation
to newly constructed Phayakkhaphum Phisai Substation.
-63-
Table 4.18Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 2; Subproject No. 9
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 37417.47 37300.41 1.0031 117.076.00 27873.88 27777.58 1.0035 96.318.00 21187.93 21107.87 1.0038 80.07
10.00 16409.12 16341.97 1.0041 67.1512.00 12927.44 12870.72 1.0044 56.7214.00 10344.40 10296.21 1.0047 48.1916.00 8395.10 8353.98 1.0049 41.1318.00 6900.46 6865.24 1.0051 35.2220.00 5737.35 5707.11 1.0053 30.2522.00 4819.79 4793.77 1.0054 26.0224.00 4086.75 4064.36 1.0055 22.4026.00 3494.33 3475.05 1.0055 19.28
Equalized Discount Rate = 58.57%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 37664.77 37300.41 1.0098 364.366.00 28116.56 27777.58 1.0122 338.988.00 21420.51 21107.87 1.0148 312.64
10.00 16629.36 16341.97 1.0176 287.3812.00 13134.76 12870.72 1.0205 264.0414.00 10539.06 10296.21 1.0236 242.8516.00 8577.77 8353.98 1.0268 223.7918.00 7071.93 6865.24 1.0301 206.7020.00 5898.49 5707.11 1.0335 191.3822.00 4971.40 4793.77 1.0371 177.6324.00 4229.61 4064.36 1.0407 165.2526.00 3629.13 3475.05 1.0443 154.08
Equalized Discount naie is Greater Than 150%
Transmission System Planning Division21 -Mar-95
11:26 AM
-64-
SUBPROJECT NO.10115 KV CHAIYAPHUM - BAMNET NARONG LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.19.
b) Alternative Plans The three possible alternative plans to serve the same technicalobjectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998
* Construction of 115 I-V Chai-aphum - Bim. net NTrong line, siLng circui
on double circuit steel tower, using 795 MCM ACSR conductor, a distance ofapproximately 58 km.
The economic cost is 251.7 MTHB.
Alternative B
Year 1998
- Construction of 115 kV Nakhon Ratchasima 2 - Bamnet Narong line,
single circuit on double circuit steel tower, using 795 MCM ACSR conductor, a distance
of approximately 65 km.
The economic cost is 264.1 MTHB.
-65-
Alternative C:
Year 1998
- Installation of three units 25 MW gas turbine power plant at Bamnet
Narong Substation.
The economic cost is 1,134.0 MTHB.
The installation schedules of Alternative A, B and C are shown in Figures
4.1 to 4.3.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are givenin Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 22,059.14
Alternative B 22,124.52
Alternative C 23,068.70
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%_
Alternative A VS. Alternative B 65.38 1.0030 >150.00
Alternative A VS. Alternative C 1,009.56 1.0458 62.81
Results of the analysis have led to the conclusion that the construction ofthe proposed 115 kV Chaiyaphum - Bamnet Narong transmission system project is the
least cost alternative.
-66-
Table 4.19
Load Forecast for Bamnet Narong Substation
Subprojec No.10
Fiscal Peak Demand Energy Demand Load Factor
Year MW % Increase GWh % Increase (%)
1994 14.00 - 61.40 - 50.07
1995 18.00 28.57 a 70.20 14.33 at 44.52
1996 19.20 6.67 79.20 12.82 47.09
1997 35.50 84.90 a/ 116.50 47.10 a/ 37.46
1998 36.80 3.66 189.00 62.23 58.63
1999 38.10 3.53 222.30 17.62 66.61
2000 39.40 3.41 253.10 13.86 73.33
2001 40.80 3.55 260.50 2.92 72.89
2002 42.20 3.43 268.10 2.92 72.52
2003 43.60 3.32 276.00 2.95 72.26
2004 45.00 3.21 284.10 2.93 72.07
2005 46.40 3.11 292.60 2.99 71.99
2006 47.79 3.00 301.30 2.97 71.97
Note: _l Highly demand increase due to demand of Asean Potash Mine Project.
-67-
Table 4.20Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9
Region 2; Subproject No. 10
Cost Stream : AterMftve A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 50673.11 50555.92 1.0023 117.196.00 37685.21 37590.60 1.0025 94.618.00 28603.47 28525.52 1.0027 77.95
10.00 22124.52 22059.14 1.0030 65.3812.00 17412.91 17357.23 1.0032 55.6814.00 13923.60 13875.55 1.0035 48.0616.00 11294.79 11252.85 1.0037 41.9418.00 9282.21 9245.25 1.0040 36.9720.00 7718.22 7685.37 1.0043 32.8522.00 6485.87 6456.47 1.0046 29.4024.00 5502.38 5475.90 1.0048 26.4826.00 4708.20 4684.23 1.0051 23.98
Equalized Discount Rate is Greater Than 150%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 52970.30 50555.92 1.0478 2414.386.00 39366.42 37590.60 1.0472 1775.818.00 29853.89 28525.52 1.0466 1328.37
10.00 23068.70 22059.14 1.0458 1009.5612.00 18135.85 17357.23 1.0449 778.6214.00 14484.16 13875.55 1.0439 608.6116.00 11734.33 11252.85 1.0428 481.4818.00 9630.25 9245.25 1.0416 385.0020.00 7996.09 7685.37 1.0404 310.7322.00 6709.27 6456.47 1.0392 252.8024.00 5682.96 5475.90 1.0378 207.0626.00 4854.78 4684.23 1.0364 170.55
Equalized Discount Rate = 62.81%
Transmission System Planning Division21-Mar-95
11:28AM
-68-
Capacity (MW)120 -
110 - 115 kV Chaiyaphum - Bamnet NarongSC on DC/ST 795 MCM ACSR
100 -E
90 - Installed Capac¢vU,
80 - o80~~~70 - 0
60-
50 - U3
40 0. ~~~~~~~~~Peak Demand
30 -
20-
10
0 1993 1 1994 1 1995 1 1996 1 1997 1 1998 1 1999 1 2000 2 2001 I 2002 I 2003 1 2004 1 2005 1 2006 1 2007
Fiscal Yeair
Figure 4.1 Installation Schedule for Subproject No. 10(Bamnet Narong Substation) Alternative A
(Capacity (MW)120 -
110 - 115 kV Nakhon Ratchasima 2 - Barnnet NarongSC on DC/ST 795 MCM ACSR
100 -
E 90 - E t K Installed Capacity
U)80 u
70 -0
60-
50 - U.0
40 -.......Peak Demand
30-
20 -
10__________
0 - 1993 1 1994 1 1995 1 1996 1 1997 1 1998 1 1999 1 2000 1 2001 1 2002 1 2003 1 2004 r 2005
Fiscal Year
Figure 4.2 Installation Schedule for Subproject No. 10(Bamnet NarongSubstation) Altemative B
4 4
Capacity (MW)120 -
110 -Gas Turbine 3x25 MW
100 -
90- 0 IInstalled Crapacity80
70 -
60-- *. Firm Capacily
50 -
40 - 3_ Peak Dernand0.30-
20-
10
0 1993 1 1994 1 1995 1996 1 1997 1 1998 1 1999 1 2000 1 2001 2002 1 2003 1 2004 1 2005 1 2006 7 2007
Fiscal Year
Figure 4.3 Installation Schedule for Subproject No. 10(Bamnet Narong Substation) Alternative C
SUBPROJECT NO.11115 KV UBON RATCHATHIANI 2 - KANTHARALAK LINE
AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.21.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Construction of 115 kV Ubon Ratchathani 2 - Kantharalak line, single
circuit on double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 55 km.
The economic cost is 247.0 MTHB.
Alternative B
Year 1998
- Construction of 115 kV Si Sa Ket - Kantharalak line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 65 km.
The economic cost is 267.2 MTHB.
-72-
Alternative C
Year 1998
- Installation of two units 25 MW gas turbine power plant at Kantharalak
Substation.
The economic cost is 756.0 MTHB.
Year 2001
- Installation of one unit 25 MW gas turbine power plant at Kantharalak
Substation.
The economic cost is 378.0 MTHB.
The installation schedules of Alternative A, B and C are shown in Figures
4.4 to 4.6.
c) Power Flow Diagrams The power flow diagrams fQr the proposed plan are given
in Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 15,305.51
Alternative B 15,332.73
Alternative C 15,755.06
-73-
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.(MHB ______ s o
Altemative A VS. Alternative B 27.22 1.0018 >150.00
Alternative A VS. Alternative C 449.55 1.0294 83.90
Results of the analysis have led to the conclusion that the construction of
the proposed 115 kV Ubon Ratchathani 2 - Kantharalak transmission system project is
the least cost alternative.
-74-
Table 4.21
Load Forecast for Kantharalak Substation
Subpro*ct No.l I
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 13.50 - 48.60 - 41.101995 15.00 11.11 54.70 12.55 41.631996 16.60 10.67 61.10 11.70 42.021997 18.20 9.64 67.30 10.15 42.211998 19.90 9.34 74.70 11.00 42.851999 21.70 9.05 82.00 9.77 43.142000 23.50 8.29 89.60 9.27 43.522001 25.30 7.66 97.60 8.93 44.042002 27.30 7.91 103.10 5.64 43.112003 29.80 9.16 114.60 11.15 43.902004 31.20 4.70 123.70 7.94 45.262005 33.40 7.05 133.30 7.76 45.562006 35.60 6.59 143.40 7.58 45.98
-75-
Table 4 .22Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 2; Subproject No. 11
r(riqt Stream : Altema` A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit __- Cost Net Benefit
4.00 35190.32 35144.81 1.0013 45.526.00 26152.80 26115.06 1.0014 37.748.00 19836.45 19804.63 1.0016 31.82
10.00 15332.73 15305.51 1.0018 27.2212.00 12059.40 12035.80 1.0020 23.6014.00 9636.66 9615.97 1.0022 20.6916.00 7812.47 7794.15 1.0024 18.3218.00 6416.71 6400.35 1.0026 16.3620.00 5332.66 5317.95 1.0028 14.7122.00 4478.95 4465.63 1.0030 13.3224.00 3797.97 3785.85 1.0032 12.1226.00 3248.34 3237.25 1.0034 11.08
Equalized Discount Rate is Greater Than 150%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit -- Cost Net Benefit
4.00 36183.06 35144.81 1.0295 1038.256.00 26886.55 26115.06 1.0295 771.498.00 20388.41 19804.63 1.0295 583.78
10.00 15755.06 15305.51 1.0294 M9.5512.00 12387.75 12035.80 1.0292 351.9414.00 9895.73 9615.97 1.0291 279.7616.00 8019.62 7794.15 1.0289 225.4718.00 6584.31 6400.35 1.0287 183.9620.00 5469.68 5317.95 1.0285 151.7322.00 4591.96 4465.63 1.0283 126.3324.00 3891.89 3785.85 1.0280 106.0426.00 3326.89 3237.25 1.0277 89.63
Equalized Discount Rate 83.90%
Transmission System Planning Division21 -Mar-95
11:29 AM
-76-
Capacity (MW)150 -
140 -
130 -
120 - 115 kV Ubol Ratchathani 2 - Kantharalak
110 - 1SC on DC/ST 795 MCM ACSR
100 - o
90 - 4 Installed Capacity
80 _
70-
60 - .
50 - 'O
40 -
30-
20 -Peak Demand
1 0
0-° 1993 1994 1995 1996 1997 1998 1999 2000 1 2001 1 2002 1 2003 1 2004 1 2005 1 2006 I 2)07
Fiscal Year
Figure 4.4 Installation Schedule For Subproject No. 11(Kantharalak Substation) Alternative A
Capacity (MW)150 -
140 -
130 -
120 - E 115 kV Si Sa Ket - Kantharalak
110 - I SC on DC/ST 795 MOM ACSR
100 Cl)_
90 - Installed Capacity
80 -
co 70 -
60 -
50-40-30-
20 -- ~ekDmn
1 0
0 - l1993 1 1994 1 1995 1 1996 1 1997 ! 1998 1 19991 2000 1 2001 1 2002 1 2003 1 20047 12005l12006 1 2007
Fiscal Year
Figure 4.5 Installation Schedule for Subproject No. 11(Kantharalak Substation) Alternative B
Capacity (MW)100 -
90 - GasTurbine 1x25MW
80 - Installed CapacityE Gas Turbine70 - ,l 2x25 MW
70 - >CD
60 s n l 260~~~~.
t5- .a Firm Capacity
30 A!
20 - T _ mand20
10 l
0 1993 1 1994 1 1995 1 1996 1 1997 1 1998 1 1999 2000 1 2001 1 2002 2003 1 2004 1 2005 1 2006 1 2007
Fiscal Year
Figure 4.6 Installation Schedule for Subproject No.11(Kantharalak Substation) Alternative C
SUBPROJECT NO.12115 KV SURIN - SANGKIIA LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted asshown in Table 4.23.
b) Alternative Plans The three possible alternative plans to serve the same technicalobjectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Construction of 115 kV Surin - Sangkha line, single circuit on doublecircuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 49km.
The economic cost is 230.7 MTHB.
Alternative B
xYear 1998
- Construction of 115 kV Si Sa Ket - Sangkha line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance ofapproximately 74 km.
The economic cost is 291.6 MTHB.
-80 -
Alternative C
Year 1998
- Construction of 22 kV Surin - Sangkha distribution line with automatic
voltage regulators (AVR), using 185 sq.mm AAC conductor, a distance of
approximately 66 km.
The economic cost is 111.58 MTHB.
Year 2000
- Construction of 115 kV Surin - Sangkha line, single circuit on double
circuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 49km.
The economic cost is 230.7 MTIHB.
The installation schedules of Alternative A, B and C are shown in Figure4.7 to 4.9.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are givenin Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 15,138.38
Alternative B 15,230.78
Altemative C 15,181.33
-81-
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTIHB! _ _ _
Alternative A VS. Alternative B 92.40 1.0061 >150.00
Alternative A VS. Alternative C 42.95 1.0028 30.63
Results of the analysis have led to the conclusion that the construction ofthe proposed 115 kV Surin - Sangkha transmission system project is the least cost
alternative.
-82-
Tabie 4.23
Load Forecast for Sangkha Substation
Subvqfd tNo.12
Fiscal Peak Demand Energy Demand Load Factor
Year MW % Increase GWh % Increase (%)
1994 9.80 - 35.20 - 41.00
1995 11.10 13.27 40.10 13.92 41.24
1996 12.40 11.71 45.40 13.22 41.80
1997 13.80 11.29 51.00 12.33 42.19
1998 15.30 10.87 56.90 11.57 42.45
1999 16.80 9.80 63.10 10.90 42.88
2000 18.40 9.52 69.50 10.14 43.12
2001 20.00 8.70 76.20 9.64 43.49
2002 21.70 8.50 83.20 9.19 43.77
2003 23.40 7.83 90.60 8.89 44.20
2004 25.10 7.26 98.10 8.28 44.62
2005 26.90 7.17 106.00 8.05 44.98
2006 28.80 7.06 114.10 7.64 45.23
-83-
Table 4 .24Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 2; Subproject No. 12
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 35053.84 34870.91 1.0052 182.946.00 26028.19 25885.72 1.0055 142.478.00 19723.51 19609.98 1.0058 113.53
10.00 15230.78 15138.38 1.0061 92.4012.00 11967.54 11890.88 1.0064 76.6614.00 9553.93 9489.22 1.0068 64.7016.00 7737.92 7682.47 1.0072 55A518.00 6349.47 6301.32 1.0076 48.1620.00 5271.94 5229.62 1.0081 42.3122.00 4424.02 4386.47 1.0086 37.5524.00 3748.20 3714.58 1.0091 33.6326.00 3203.16 3172.83 1.0096 30.34
Equalized Discount Rate is Greater Than 150%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 34938.77 34870.91 1.0019 67.866.00 25945.46 25885.72 1.0023 59.738.00 19661.13 19609.98 1.0026 51.15
10.00 15181.33 15138.38 1.0028 42.9512.00 11926.37 11890.88 1.0030 35.4914.00 9518.12 9489.22 1.0030 28.8916.00 7705.62 7682.47 1.0030 23.1418.00 6319.50 6301.32 1.0029 18.1920.00 5243.56 5229.62 1.0027 13.9322.00 4396.77 4386.47 1.0023 10.3124.00 3721.80 3714.58 1.0019 7.2226.00 3177.43 3172.83 1.0015 4.61
Equalized Discount Rate 30.63%
Transmission System Planning Division21-Mar-95
11.31 AM
-84-
Capacit (MW)ISO
140130
120
10 E .9115kv
Sunn - Sangkha
100 C1
SC on DCIST 795 MCM ACSR
90 1l
00 80 Q0
7060 dl
s0
40 -a.
302010
I Peak Demand
°~~~~~~~9 5997 999i
Fiscal Ye Noar
FigUre 4. Installation Schedule for Subprojlect No. 12
(Sangqkha Substation) Afternative A
CaPaCitY (I\mwl)150 -
130 -;
t100 d EV 115kV S'SaKet - Sangkha
l c c SC On DC/ST 795 MCM ACSR
90- ,.9
, 80 -1 XE lA lIstalledCa ac
I
1 701 9 1 I 9 9 8 1 0
60s a e f o o
n0 b a B
20-i1 I
10-l
0 d
0
Fl9lr 4-8 angkhallttn Schedule for -Subproiect No. 12
(SankhaSubstation) AlternativeB
Capacity (MW)150 -
140 -
130 -
120 -E 115 kV Surin -Sangkha
110 - SC on DC/ST 795 MCM ACSR
100 - .0. X
90 - OInstalled Capacity
80 - CD
CD)70 , CD
60 UlFca50 -c40 -C
30~~~~~~:
20 PeakDemand
1 0
0 993 1 1994 1995 1 1996 I1997 I1998 I1999 I2000 12001 12002 1 2003 12004 12005 12006 I7 2007
Fiscal Year
Figure 4.9 Installation Schedule for Subproject No. 12(Sangkha Substation) Alterrative C
SUBPROJECT NO.13
230 KV NAKHON SI THAMMARAT - THUNG SONG - SURAT THANI
LINES AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.25.
b) Alternative Plans The four possible alternative plans to serve the same technical
objectives of this subproject as described in Volume 1 (Main Report) are
Alternative A:
Year 1998
- Reconstruction of the existing Nakhon Si Thammarat -Thung Song from
115 kV single circuit line to 230 kV double circuit line, using 1,272 MCM ACSR
conductor, a distance of approximately 54 km, initially energized at 115 kV.
- Reconstruction of the existing Surat Thani - Thung Song from 115 kV
double circuit line to 230 kV double circuit line. using 2x1,272 MCM ACSR conductor,
a distance of approximately 122 km.
- Installation of 2x200 MVA 230/115 kV transformer at Thung Song
Substation.
The economic cost is 1,561.2 MTHB.
Year 2003
- Conversion of 230/115 kV Nakhon Si Thammarat - Thung Song line to
energized at 230 kV.
-88-
The economic cost is 95.8 MTHB.
Alternative B
Year 1998
- Reconstruction of the existing Nakhon Si Thammarat - Thung Song from
115 kV single circuit line to 230 kV double circuit line, using 1,272 MCM ACSRconductor, a distance of approximately 54 km.
- Construction of 230 kV Surat Thani - Nakhon Si Thammarat line, double
circuit steel tower, using 2x1,272 MCM ACSR conductor, a distance of approximately145 km.
- Installation of 2x200 MVA 230/115 kV transformer at Thung SongSubstation.
The economic cost is 2,291.9 MTHB.
Year 2006
- Installation of xlO0 MVA 230/115 kV transformer at Surat ThaniSubstation.
The economic cost is 67.8 MTHB.
Alternative C
Year 1998
- Reconstruction of the existing Nakhon Si Thammarat - Thung Song from
115 kV single circuit line to 230 kV double circuit line, using 1,272 MCM ACSR
conductor, a distance of approximately 54 km.
-89-
- Construction of 230 kV Khanom - Nakhon Si Thammnarat line, double
circuit line, using 2x1,272 MCM ACSR conductor, a distance of approximately 98 km.
- Installation of 2x200 MVA 230/115 kV tmnsformer at Thung Song
Substation.
The economic cost is 1,815.3 MTHB.
Year 2006
- Installation of lxlOO MVA 230/115 kV transformer at Surat Thani
Substation.
The economic cost is 72.1 MTHB.
Alternative D
Year 1998
- Reconstruction of the existing Surat Thani - Thung Song from 115 kV
double circuit line to 230 kV double circuit line, using 2x1272 MCM ACSR conductor,
a distance of approximately 122 km.
- Installation of 2x200 MVA 230/115 kV transformers at Thung Song
Substation.
- Termination of 230 kV Nakhon Si Thammarat - Phatthalung and 230 kV
Thung Song - Khlong Ngae lines at Phatthalung 2 Substation.
The economic cost is 1,696.8 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
-90-
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 33,050.00
Alternative B 33,619.14
Alternative C 33,114.72
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) _ _ _
Alternative A VS. Alternative B 569.14 1.0172 107.18
Alternative A VS. Alternative C 64.73 1.0020 32.62
Results of the analysis have led to the conclusion that the construction of
230 kV Nakhon Si Thammarat - Thung Song - Surat Thani transmission system project
is the least cost alternative.
-91-
Table 4.25
Load Forecast for Lower Southern Region
SubproFct No.13
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 489.79 - 2738.64 - 63.83
1995 556.30 13.58 2985.10 9.00 61.26
1996 644.99 15.94 3441.59 15.29 60.91
1997 711.87 10.37 3801.86 10.47 60.97
1998 771.42 8.37 4089.85 7.57 60.52
1999 828.65 7.42 4384.66 7.21 60.40
2000 888.19 7.19 4687.14 6.90 60.24
2001 946.69 6.59 5000.04 6.68 60.29
2002 1008.55 6.53 5283.50 5.67 59.80
2003 1068.39 5.93 5575.11 5.52 59.57
2004 1130.51 5.81 5883.77 5.54 59.41
2005 1192.03 5.44 6198.27 5.35 59.36
2006 1255.76 5.35 6527.41 5.31 59.34
-92-
Table 4 . 2 6Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 3; Subproject No.13
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 72755.72 71923.23 1.0116 832.496.00 55162.17 54431.47 1.0134 730.708.00 42671.54 42027.94 1.0153 643.60
1 0.'' '00 0 l00033619.14, '33050.00 :1.017 569.1412.00 26929.38 26424.08 1.0191 505.3014.00 21894.41 21444.09 1.0210 450.3216.00 18039.86 17637.17 1.0228 402.6918.00 15042.21 14681.02 1.0246 361.2020.00 12677.03 12352.18 1.0263 324.8522.00 10786.00 10493.15 1.0279 292.8524.00 9255.70 8991.15 1.0294 264.5426.00 8003.59 7764.20 1.0308 28903
Equalized Discount Rate = 107.18%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 71986.19 71923.23 1.0009 62.966.00 54501.02 54431.47 1.0013 69.558.00 42096.97 42027.94 1.0016 69.03
it00000010.0S,-0 3314.2 33050.00 1-0020: 04.7312.00 26482.61 26424.08 1.0022 58.5314.00 21495.64 21444.09 1.0024 51.5416.00 17681.55 17637.17 1.0025 44.3818.00 14718.42 14681.02 1.0025 37.4020.00 12382.97 12352.18 1.0025 30.7922.00 10517.78 10493.15 1.0023 24.6324.00 9010.12 8991.15 1.0021 18.9726.00 7778.00 7764.20 1.0018 13.81
Equalized Discount Rate = 32.62%
Transmission System Planning Division21-Mar-95
11:34 AM
-93-
Table 4.26Summary Result of Economic Analysis
(Continued)
Project Transmission System Expansion Project No. 9Region 3; Subproject No.13
Cost Stre;am : A;te,nFa,,v6e A
Benefit Stream Alternative D
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 72086.62 71923.23 1.0023 163.396.00 54562.08 54431.47 1.0024 130.618.00 42135.81 42027.94 1.0026 107.87
10.00 33141.47 33050.00 1.0028 91.4712.00 26503.27 26424.08 1.0030 79.1914.00 21513.76 21444.09 1.0032 69.6716.00 17699.22 17637.17 1.0035 62.0518.00 14736.80 14681.02 1.0038 55.7820.00 12402.70 12352.18 1.0041 50.5222.00 10539.16 10493.15 1.0044 46.0124.00 9033.25 8991.15 1.0047 42.1026.00 7802.85 7764.20 1.0050 38.66
Equalized Discount Rate is Greater Than 150%
Transmission System Planning Division21 - Mar-95
11:36 AM
-94-
SUBPROJECT NO.14230 KV KHLONG NGAE - YALA LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.27.
b) Alternative Plans The three possible alternative plans to serve the same technicalobjectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Construction of 230 kV Khlong Ngae - Yala line, double circuit steeltower, ising 1 j272 MCM ACSR rnuictor, a itanc osf a 120 km. (usicn
existing right-of-way of existing 115 kV Hat Yai 2 - Yala line).
- Construction of 230 kV Yala Substation with 2x200 MVA 230/115 kVtransforners.
The economic cost is 934.4 MTHB.
Alternative B
Year 1998
- Construction of 230 kV Khlong Ngae - Yala line, double circuit steel
tower, using 1,272 MCM ACSR conductor, a distance of approximately 120 km (usingexisting right-of-way of 115 kV Hat Yai 2 - Yala line), initially energized at 115 kV.
- Installation of 2x200 MVA 230/115 kV transformer at Khlong NgaeSubstation.
The economic cost is 896.6 MTHB.
-95-
Year 2006
- Installation of 1 x200 MVA 230/115 kV transformer at Hat Yai 2a-abstationl.
The economic cost is 89.4 MTHB.
Alternative C:
Year 1998
- Construction of 230 kV Khlong Ngae - Yala line, double circuit steel
tower, using 1,272 MCM ACSR conductor, a distance of approximately 120 km.
- Construction of 230 kV Yala Substation with 2x200 MVA 230/115 kVtransformer.
The economic cost is 1,258.0 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are givenin Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 20,548.56Alternative B 20,657.35Alternative C 20,891.41
Alternative D 20,800.02
-96-
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.-
(MTHB)
Alternative A VS. Alternative B 108.78 1.0053 41.25
Alternative A VS. Alternative C 251.45 1.0122 >150.00
Results of the analysis have led to the conclusion that the construction of
230 kV Khlong Ngae - Yala transmission system project is the least cost alternative.
-97-
Table 4.27
Load Forecast for Yala, Pattani, Narathiwat,and Sugai Kolok Substations
Subprojc No.14
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 98.82 - 533.05 - 61.581995 119.84 21.27 600.50 12.65 57.201996 129.29 7.89 645.69 7.53 57.011997 139.02 7.53 692.00 7.17 56.821998 149.11 7.26 732.94 5.92 56.111999 159.58 7.02 779.98 6.42 55.802000 170.43 6.80 830.36 6.46 55.622001 181.63 6.57 885.99 6.70 55.682002 193.33 6.44 938.56 5.93 55.422003 205.46 6.27 994.43 5.95 55.252004 218.30 6.25 1054.69 6.06 55.152005 231.44 6.02 1118.38 6.04 55.162006 245.03 5.87 1184.97 5.95 55.21
-98-
Table 4.28Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 3; Subproject No.14
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 45971.56 45701.70 1.0059 269.856.00 34513.39 34316.49 1.0057 196.898.00 26449.60 26304.06 1.0055 145.54
10.00 20657.35 20548.56 1.0053 108.7812.00 16414.78 16332.73 1.0050 82.0514.00 13249.43 13187.09 1.0047 62.3416.00 10846.56 10798.94 1.0044 47.6218.00 8992.85 8956.36 1.0041 36.4920.00 7541.29 7513.28 1.0037 28.0122.00 6388.87 6367.40 1.0034 21.4724.00 5462.33 5445.93 1.0030 16.4026.00 4708.71 4696.27 1.0026 12.44
Equalized Discount Rate = 41.25%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(M) Benefit Cost Net Benefit
4.00 45983.12 45701.70 1.0062 281.426.00 34590.93 34316.49 1.0080 274.448.00 26567.75 26304.06 1.0100 263.69
10.00 20800.02 20548.56 1.0122 251.4512.00 16571.62 16332.73 1.0146 238.9014.00 13413.70 13187.09 1.0172 226.6116.00 11013.82 10798.94 1.0199 214.6818.00 9160.16 8956.36 1.0228 203.8020.00 7706.70 7513.28 1.0257 193.4222.00 6551.12 6367.40 1.0289 183.7224.00 5620.58 5445.93 1.0321 174.6626.00 4862.46 4696.27 1.0354 166.19
Equalized Discount Rate is Greater Than 150%
Transmission System Planning Division21 -Mar-95
11:42 AM
-99-
SUBPROJECT NO.15230/115 KV PHANGNGA - PHUKET JUNCTION - PHUKET 2
LINES AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.29.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998
- Reconstruction of the existing Phangnga - Phuket Junction (Proposed Site
of future Phuket 3 Substation) from 115 kV single circuit line to 230 kV double circuit
line, using 1,272 MCM ACSR conductor a distance of approximately 76 km, initially
energized at 115 kV.
- Construction of 115 kV Phuket Junction - Phuket 2 line, single circuit
compact line, using 2x795 MCM ACSR conductor, a distance of approximately 12 km.
- Connecting of the Phangnga - Phuket Junction line with the existing 1 15
kV Phuket Junction - Phuket 2 and the new 115 kV compact line.
- Replace the existing 2x100 MVA 230/115 kV transforrners with 2x200
MVA transformers at Rajjaprabha Substation.
The economic cost is 652.0 MTHB.
-100-
Alternative B
Year 1998
- Reconstruction of the existing 115 kV Phangnga - Phuket Junction from
single circuit line to double circuit line, using 2x795 MCM ACSR conductor, a distance
of approximately 76 km.
- Construction of 115 kV Phuket Junction - Phuket 2 line, single circuit
compact line, using 2x795 MCM ACSR conductor, a distance of approximately 12 km.
- Connecting of the Phangnga - Phuket Junction line with the existing 115kV Phuket Junction - Phuket 2 and the new 115 kV compact line.
- Replace the existing 2xlO0 MVA 230/115 kV transformers with 2x200MVA transformers at Rajjaprapha Substation.
The economic cost is 628.4 MTHB.
Year 2002
- Construction of 115 kV Phuket 3 Substation at Phuket Junction andterminate 230/115 kV Phangnga - Phuket Junction lines to Phuket 3 Substation.
- Termination of 115 kV Phangnga - Phuket 1 line to Phuket 3 Substation
and reconstruction of the line section from Phangnga to Phuket 3 from double circuit
line using 477 MCM ACSR to double circuit line using 2x795 MCM ACSR conductor,
a distance of approximately 70 km.
The economic cost is 429.2 MTHB.
-101-
Alternative C
Year 1998
- Reconstruction of the existing Phangnga - Phuket Junction from 115 kV
single circuit line to 230 kV double circuit line, using 1,272 MCM ACSR conductor,
a distance of approximately 76 km.
- Construction of 230 kV Phuket 3 Substation with 2x200 MVA 230/115
kV transformers.
- Construction of 230 kV Rajjaprabha - Phangnga line, double circuit steel
tower, using 1,272 MCM ACSR conductor, a distance of approximately 73 km and
connected with the 230 kV Phangnga - Phuket 3 line.
The economic cost is 1,381.1 MTHB.
Year 2004
- Construction of 115 kV Phuket 3 - Phuket 2 line, single circuit compact
line, using 2x795 MCM ACSR conductor, a distance of approximately 12 km.
The economic cost is 60.1 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
-102-
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 23,235.26
Alternative B 23,343.82
Alternative C 23,396.00
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) 0(°')
Alternative A VS. Aiternative B i08.56 1.0047 >15D.0 V%/
Alternative A VS. Alternative C 160.74 1.0069 N.A.
Results of the analysis have led to the conclusion that the construction of
230 kV Phangnga - Phuket Junction initially energized at 115 kV and 115 kV Phuket
2 - Phuket Junction transmission system project is the least cost alternative.
-103-
Table 4.29
Load Forecast for Phuket Province
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 86.74 - 514.20 - 67.671995 100.48 15.84 603.91 17.45 68.611996 109.56 9.04 650.42 7.70 67.771997 119.07 8.68 713.32 9.67 68.391998 128.94 8.29 762.42 6.88 67.501999 139.27 8.01 818.47 7.35 67.092000 150.09 7.77 878.84 7.38 66.842001 161.30 7.47 945.14 7.54 66.892002 173.14 7.34 1009.06 6.76 66.532003 185.61 7.20 1077.95 6.83 66.302004 198.97 7.20 1152.89 6.95 66.142005 212.88 6.99 1232.99 6.95 66.122006 227.54 6.89 1318.09 6.90 66.13
-104-
Table 4 .3 0Summary Result of Economic Analysis
Project : Transmission System Expansion Project No. 9Region 3; Subproject No.15
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 52369.38 52303.71 1.0013 65.676.00 39220.44 39124.41 1.0025 96.048.00 29976.16 29868.67 1.0036 107.49
10.00 23343.82 23235.26 1.0047 108.5612.00 18492.51 18388.39 1.0057 104.1214.00 14878.48 14781.52 1.0066 96.9616.00 12139.62 12050.93 1.0074 88.6918.00 10030.57 9950.37 1.0081 80.2020.00 8382.30 8310.32 1.0087 71.9922.00 7076.46 7012.17 1.0092 64.2924.00 6n28.R7 5971.64 1.0096 57,2326.00 5178.76 5127.92 1.0099 50.84
Equalized Discount Rate is Greater Than 150%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Vaiue Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 52029.59 52303.71 0.9948 -274.116.00 39063.83 39124.41 0.9985 -60.588.00 29943.58 29868.67 1.0025 74.91
10.00i 23396.00 23235.26 1.0069 160.7412.00 18602.89 18388.39 1.0117 214.5014.00 15028.81 14781.52 1.0167 247.2916.00 12317.14 12050.93 1.0221 266.2218.00 10226.25 9950.37 1.0277 275.8820.00 8589.67 8310.32 1.0336 279.3522.00 7290.82 7012.17 1.0397 278.6524.00 6246.79 5971.64 1.0461 275.1626.00 5397.74 5127.92 1.0526 269.82
Equalized Discount Rate is Not Applicable
Transmission System Planning Division21 -Mar-95
01:05 PM
-105-
SUBPROJECT NO.16
115 KV YALA - NARATHIWAT LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.31.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Construction of 115 kV Yala - Narathiwat line, single circuit on double
circuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 61
km.
The economic cost is 383.1 MTHB.
Alternative B
Year 1998
- Construction of 115 kV Pattani - Narathiwat line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 80 km.
The economic cost is 495.3 MTHB.
-106-
Alternative C
Year 1998
- Construction of 115 kV Yala - Narathiwat line, double circuit steel
tower, using 795 MCM ACSR conductor, a distance of approximately 61 km.
The economic cost is 435.7 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 16,882.43
Alternative B 17,019.45
Alternative C 16,906.19
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%_
Alternative A VS. Alternative B 137.03 1.0081 >150.00
Altemative A VS. Alternative C 23.77 1.0014 >150.00
Results of the analysis have led to the conclusion that the construction of
115 kV single circuit on double circuit Yala - Narathiwat transmission system project
is the least cost alternative.
-107-
Table 4.31
Load Forecast for Narathiwat andSungai Kolok Substations
Subprotecl Nol16
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 31.80 - 146.21 - 52.49
1995 37.55 18.08 165.76 13.37 50.391996 40.68 8.34 177.15 6.87 49.711997 43.90 7.92 191.10 7.87 49.691998 47.23 7.59 203.61 6.55 49.211999 50.70 7.35 217.95 7.04 49.072000 54.27 7.04 232.69 6.76 48.952001 57.96 6.80 248.94 6.98 49.032002 61.80 6.63 264.34 6.19 48.832003 65.78 6.44 280.67 6.18 48.712004 69.93 6.31 297.97 6.16 48.642005 74.15 6.03 316.16 6.10 48.672006 78.45 5.80 334.89 5.92 48.73
-108-
Table 4.32Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 3; Subproject No.16
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 38302.46 38085.97 1.0057 216.496.00 28646.20 28463.45 1.0064 182.758.00 21870.90 21713.87 1.0072 157.03
10.00 17019.45 16882.43 1.0081 137.0312.00 13477.46 13356.29 1.0091 121.1614.00 10843.42 10735.09 1.0101 108.3416.00 8850.39 8752.60 1.0112 97.7918.00 7317.76 7228.78 1.0123 88.9820.00 6121.34 6039.83 1.0135 81.5122.00 5174.31 5099.22 1.0147 75.0924.00 4415.05 4345.53 1.0160 69.5126.00 3799.14 3734.52 1.0173 64.62
Equalized Discount Rate is Greater Than i50%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 38100.47 38085.97 1.0004 14.506.00 28483.25 28463.45 1.0007 19.808.00 21736.43 21713.87 1.0010 22.56
10.00 16906.19 16882.43 1.0014 23.7712.00 13380.33 13356.29 1.0018 24.0414.00 10758.82 10735.09 1.0022 23.7416.00 8775.70 8752.60 1.0026 23.1018.00 7251.06 7228.78 1.0031 22.2820.00 6061.18 6039.83 1.0035 21.3522.00 5119.60 5099.22 1.0040 20.3824.00 4364.94 4345.53 1.0045 19.4126.00 3752.97 3734.52 1.0049 18.44
Equalized Discount Rate is Greater Than 150%
Transmission System Planning Division21 - Mar-95
01:07 PM
-1oo-
SUBPROJECT NO.17115 KV SURAT TIANI - BAN DON LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.33.
b) Alternative Plans The three possible alternative plans to serve the same techllical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Stringing 2nd circuit of 115 kV Surat Thani - Ban Don lin,c using 477
MCM ACSR conductor, a distance of approximately 13 km.
The economic cost is 30.6 MTHB.
Year 2001
- Construction of 115 kV Phun Phin - Ban Don line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distancc oI
approximately 10 km.
The economic cost is 140.5 MTHB.
Alternative B
Year 1998
- Construction of 115 kV Phunphin - Ban Don line, singie circuit on
double circuit steel tower, using 795 MCM ACSR conductor. a distance of
approximately 10 km.
-110-
- Reconstruction of the existing 115 kV Surat Thani - Phunphin from
single circuit line using 150 sq.mm AAAC conductor to single circuit on double circuitline using 795 MCM ACSR conductor, a distance of approximately 6.2 km.
The economic cost is 170.3 MTHB.
Year 2003
- Stringing of the 2nd circuit of 115 kV Surat Thani - Phun Phin line,
using 795 MCM ACSR conductor, a distance of approximately 6.2 km.
The economic cost is 22.1 MTHB.
Alternative C
Year 1998
I nstallation of three units of 25 MW gas turbine power plant at Ban DonSubstation.
The economic cost is 1,134.0 MTHB.
Year 2000
- Installation of one unit of 25 MW gas turbine power plant at Ban DonSubstation.
The economic cost is 378.0 MTHB.
Year 2004
- Installation of one unit of 25 MW gas turbine power plant at Ban lDonSubstation.
-111-
The economic cost is 378.0 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 18,710.26
Alternative B 18,732.46
Alternative C 23,874.37
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (%)
Alternative A VS. Alternative B 22.20 1.0012 >150.00
Alternative A VS. Alternative C 5,164.11 1.2760 >150.00
Results of the analysis have led to the conclusion that the 115 kV Surat
Thani - Ban Don Line Stringing project is the least cost alternative.
-112-
Table 4.33
Load Forecast for Ban Don Substation
Subprojel No. 7
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 52.36 - 298.04 - 64.981995 53.37 1.93 305.97 2.66 65.451996 57.37 7.49 328.88 7.49 65.441997 42.12 a -26.58 240.25 J -26.95 65.111998 45.34 7.64 254.91 6.10 64.181999 48.61 7.21 271.27 6.42 63.702000 51.98 6.93 289.06 6.56 63.482001 55.45 6.68 308.62 6.77 63.542002 59.00 6.40 326.71 5.86 63.212003 62.68 6.24 345.87 5.86 62.992004 66.53 6.14 366.33 5.92 62.862005 70.42 5.85 387.66 5.82 62.842006 74.39 5.64 409.63 5.67 62.86
Note p/ Some loads are transfered to the PEA's 115 kV systems which receive power from
230/115 kV Thung Song Substabon.
-113-
Table 4 .34Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 3; Subproject No.17
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 43270.21 43253.55 1.0004 16.656.00 32097.62 32078.30 1.0006 19.328.00 24293.26 24272.17 1.0009 21.09
10.00 18732.46 18710.26 1.0012 22.2012.00 14694.39 14671.56 1.0016 22.8314.00 11708.82 11685.73 1.0020 23.1016.00 9463.70 9440.60 1.0024 23.1018O.00 7748.37 7725.47 1.0030 22.9120.00 6418.32 6395.75 1.0035 22.5722.00 5372.80 5350.67 1.0041 22.1324.00 4540.47 4518.86 1.0048 21.6126.00 3870.11 3849.07 1.0055 21.05
Equalized Discount Rate is Greater Than 150%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost ___ Net Benefit
4.00 54277.49 43253.55 1.2549 11023.946.00 40466.54 32078.30 1.2615 8388.248.00 30790.61 24272.17 1.2686 6518.44
10.00 23874.37 18710.26 1.2760 5164.1112.00 18834.87 14671.56 1.2838 4163.3114.00 15095.24 11685.73 1.2918 3409.5216.00 12272.08 9440.60 1.2999 2831.4818.00 10106.19 7725.47 1.3082 2380.7220.00 8419.49 6395.75 1.3164 2023.7322.00 7087.63 5350.67 1.3246 1736.9624.00 6022.44 4518.86 1.3327 1503.5926.00 5160.49 3849.07 1.3407 1311.42
Equalized Discount Rate is Greater Than 150%
Transmission System Planning Division21 - Mar-95
01 08 PM
-114-
SUBPROJECT NO.18CONVERSION OF MAE MOH 3 - CHIANG RAI LINE FROM 115 KV TO
230 KV
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.35.
b) Alternative Plans The three possible alternative plans to serve the same technicalobjectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998
- Conversion of Mae Moh 3 - Chiang Rai line from 115 kV to 230 kV and
installation of 2x200 MVA transformer at Chiang Rai Substation.
The economic cost is 397.7 MTHB.
Alternative B
Year 1998
- Construction of 115 kV Phayao - Chiang Rai line, single circuit on
double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 80 km.
- Installation of lx200 MVA 230/115 kV transformer at Mae Moh 3Substation.
The economic cost is 344.9 MTHB.
-115-
Year 2001
- Conversion of Mae Moh 3 - Chiang Rai line from 115 kV to at 230 kVariA -- n-in ' '.1A 1.ffx r 11')AI1 I IAT r - ,f PI- ID.;and installatuion of4vU LVI V 3A 2,0./11 kxV trans1U1%.Ae atL Chiar.g, RA i "uWs-o.
The economic cost is 341.7 MTHB.
Alternative C:
Year 1998
- Termination of the existing 115 kV Mae Moh 3 - Chiang Rai line at
Phayao Substation, using 1,272 MCM ACSR conductor, a distance of approximately I
km.
- Installation of lx200 MVA 230/115 kV transformer at Mae Moh 3Substation.
The economic cost is 134.1 MTHB.
Year 2001
- Conversion of Mae Moh 3 - Chiang Rai line from 115 kV to 230 kV and
installation of 2x200 MVA 230/115 kV transformers at Chiang Rai Substation.
The economic cost is 341.7 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
-116-
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 17,425.56
Alternative B 17,652.52
Alternative C 17,487.15
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) _ _ _
Alternative A VS. Alternative B 226.96 1.0130 >150.00
Alternative A VS. Alternative C 61.59 1.0035 22.63
Results of the analysis have led to the conclusion that the conversion ofMae Moh 3 - Chiang Rai line from 115 kV to 230 kV pfoject is the least costalternative.
-117-
Table 4.35
Load Forecast for Chiangrai, Mae Chan andThoeng Substations
Subpro.cl No.18
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 81.78 - 319.35 - 44.581995 99.80 22.03 391.84 22.70 44.821996 114.94 15.17 464.46 18.53 46.131997 123.20 7.19 495.49 6.68 45.911998 131.88 7.05 532.81 7.53 46.121999 140.92 6.85 573.01 7.54 46.422000 150.33 6.68 616.93 7.66 46.852001 160.10 6.50 664.32 7.68 47.372002 170.22 6.32 708.46 6.64 47.512003 180.77 6.20 756.58 6.79 47782004 191.76 6.08 808.11 6.81 48.112005 203.13 5.93 863.88 6.90 48.552006 214.93 5.81 924.19 6.98 49.09
-118-
Table 4.36Summary Result of Economic Analysis
Project : Transmission System Expansion Project No. 9Region 4; Subproject No.18
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit4.00 39811.53 39507.44 1.0077 304.096.00 29764.71 29486.98 1.0094 277.728.00 22'08.87 22457.30 1.0112 251.56
10,00 17652.52 17425.56 1.0130 226.9612.00 13958.65 13754.21 1.0149 204.4314.00 11210.56 11026.44 1.0167 184.1216.00 9130.88 8964.94 1.0185 165.9418.00 7531.79 7382.04 1.0203 149.7520.00 6283.94 6148.61 1.0220 135.3322.00 5296.83 5174.32 1.0237 122.5124.00 4506.14 439E5.04 1.0253 111.1126.00 3865.47 3754.53 1.0268 100.95
Equalized Discount Rate is Greater Than 150%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost __ Net Benefit
4.00 39626.33 39507.44 1.0030 118.896.00 29584.12 29486.98 1.0033 97.138.00 22535.39 22457.30 1.0035 78.09
10.00 17487.15 17425.56 1.0035 61.5912.00 13801.58 13754.21 1.0034 47.3714.00 11061.60 11026.44 1.0032 35.1616.00 8989.66 8964.94 1.0028 24.7318.00 7397.86 7382.04 1.0021 15.8220.00 6156.85 6148.61 1.0013 8.2422.00 5176.12 5174.32 1.0003 1.8024.00 4391.39 4395.04 0.9992 -3.6426.00 3756.29 3764.53 0.9978 -8.24
Equalized Discount Rate - 22.63%
Transmission System Planning Division21 - Mar-95
01:11 PM
-119-
SUBPROJECT NO.19115 KV LAN KRABU - KAMPHAENGPHET LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.37.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998
- Construction of 115 kV Lan Krabu - Kamphaengphet line, double circuit
steel tower, using 795 MCM ACSR conductor, a distance of approximately 47 km.
The economic cost is 238.5 MTHIB.
Year 2006
- Construction of 115 kV Bhumibol - Tak 1 line, single circuit on double
circuit steel tower, using 795 MCM ACSR conductor, a distance of approximately 47
km.
The economic cost is 157.2 MTHB.
Alternative B
Year 1998
- Te..rn-fion of thei txisting 1 !s V Taik I - T-(-amnh enonhet line at Tak
2 Substation, using 477 MCM ACSR conductor, a distance of approximately 3 km.
-120-
- Installation of 2x200 MVA 230/115 transformers at Tak 2 Substation.
- Construction of 115 kV Bhumibol - Tak 1 line, single circuit on doublecircuit steel tower, using 795 MCM ACSR conductor, a distance' of approximately 47km.
- Construction of 115 kV Tak 2 - Kamphaengphet line, single circuit ondouble circuit steel tower, u'sing 795 MCM ACSR conductor, a distance ofapproximately 53 km.,
The economic cost is 642.8 MTHB.
Alternative C
Year 1998
- Termination 'of the existing 230 kV Bhumibol - Nakhon Sawan line atKamphaengphet Substation, using 1,272 MCM ACSR conductor, a distance ofapproximately 2 km.
- Construction of 230 kV Kamphaengphet Substation with 2x200 MVA230/115 kV transformers.
The economic cost is 404.0 MTHB.
Year 2006
- Termination of the second circuit of 230 kV Bhumibol - Nakhon Sawanline at Kamphaengphet Substation, using 1272 MCM ACSR conductor, a distance ofapproximately 2 km.
The economic cost is 123.5 MTHB.
-121 -
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Econo...ic A ;
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 17,599.85
Alternative B 17,845.92
Alternative C 17,762.88
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB) (__ __
Alternative A VS. Alternative B 246.07 1.0140 >150.00
Alternative A VS. Alternative C 163.04 1.0093 >150.00
Results of the analysis have led to the conclusion that the construction of
115 kV Lan Krabu - Kamphaengphet transmission system project is the least cost
alternative.
-122-
Table 4.37
Load Forecast for Tak 1, Mae Sot andKamphangphet Substations
Subproect No.1 9
Fiscal Peak Demand Energy Demand Load Factor
Year MW % Increase GWh % Increase (%)
1994 55.85 - 262.35 - 53.62
1995 65.31 16.94 305.36 16.39 53.37
1996 72.02 10.27 332.84 9.00 52.76
1997 78.99 9.68 370.09 11.19 53.48
1998 86.28 9.23 404.09 9.19 53.46
1999 93.85 8.77 440.27 8.95 53.55
2000 101.80 8.47 479.76 8.97 53.80
2001 110.18 8.23 522.63 8.94 54.15
2002 119.03 8.03 563.79 7.88 54.07
2003 127.95 7.49 606.89 7.64 54.15
2004 138.46 8.21 658.32 8.47 54.28
2005 149.14 7.71 712.59 8.24 54.54
2006 160.53 7.64 772.33 8.38 54.92
-123-
Table 4 . 3 8Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 4; Subproject No.19
Cros+ Q+r: rnt A - AtS WLutIAu - fl ttA. u....- w
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 40449.61 40174.40 1.0069 275.226.00 30183.46 29917.40 1.0089 266.068.00 22989.57 22733.28 1.0113 256.29
10.00 17845.92 17599.85 1.0140 246.0712.00 14096.67 13861.06 1.0170 235.6114.00 11313.44 11088.34 1.0203 225.1016.00 9211.48 8996.80 1.0239 214.6818.00 7598.31 7393.82 1.0277 204.4920.00 6341.62 6147.01 1.0317 194.6022.00 5348.97 5163.89 1.0358 185.0824.00 4554.84 4378.88 1.0402 175.9626.00 3912.00 3744.75 1.0447 167.26
Equalized Discount Rate is Greater Than 150%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value BIC Present ValueRate of of Ratio of
) Benefit Cost ___ Net Benefit
4.00 40426.93 40174.40 1.0063 252.536.00 30130.92 29917.40 1.0071 213.538.00 22918.17 22733.28 1.0081 184.89
10.00 17762.88 17599.85 1.0093 163.0412.00 14006.83 13861.06 1.0105 145.7714.00 11220.05 11088.34 1.0119 131.7116.00 9116.77 8996.80 1.0133 119.9718.00 7503.78 7393.82 1.0149 109.9620.00 6248.30 6147.01 1.0165 101.2922.00 5257.57 5163.89 1.0181 93.6824.00 4465.81 4378.88 1.0199 86.9326.00 3825.64 3744.75 1.0216 80.89
Equalized Discount Rate is Greater Than 150%
Transmission System Planning Division21-Mar-95
01:12 PM
-124-
SUBPROJECT NO.20115 KV MAE MOH 3 - LAMPANG 2 LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.39.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A
Year 1998
- Construction of 115 kV Mae Moh 3 - Lampang 2 line, double circuit
steel tower, using 2x795 MCM ACSR conductor. a distance of approximately 27 km.
The economic cost is 274.6 MTHB.
Year 1999
- Installation of 1x200 MVA 230/115 kV transformer at Chiang Mai 3
Substation.
The economic cost is 129.7 MTHB.
Year 2000
- Reconstruction of the existing Mae Moh 2 - Lampang 1 - Lamphun 1from 115 kV single circuit line to 230 kV Mae Moh 3 - Saraphi double circuit line.
using 2x1,272 MCM ACSR conductor, a distance of approximately 124 km.
- Construction of 115 kV Mae Mob 3 - Lampang I line, double circuit
steel tower, using 795 MCM ACSR conductor, a distance of approximately 41 km.
-125-
- Construction of 115 kV Lamphun 2 - Lamphun 1 line, double circuitsteel tower, using 795 MCM ACSR conductor, a distance of approximately 16 km.
- Construction of 230 kV Sarapni Substation wi'uh 2-00 MVIA 230/115kV transformers.
The economic cost is 1,943.5 MTHB.
Alternative B
Year 1998
- Reconstruction of the existing Mae Moh 2 - Lampang 1 - Lamphun Ifrom 115 kV single circuit line to 230 kV Mae Moh 3 - Saraphi double circuit line,using 2x1,272 MCM ACSR conductor, a distance of approximately 124 km.
- Construction of 115 kV Mae Moh 3 - Lampang 1 line, double circuitsteel tower, using 795 MCM ACSR conductor, a distance of approximately 41 km.
- Construction of 115 kV Lamphun 2 - Lamphun 1 line, double circuitsteel tower, using 795 MCM ACSR conductor, a distance of approximately 16 km.
- Construction of 230 kV Saraphi Substation with 2x200 MVA 230/115kV transformers.
The economic cost is 1,975.7 MTHB.
Year 2000
- Construction of 115 kV Mae Moh 3 - Lampang 2 line, double circuitsteel tower, using 2x795 MCM ACSR conductor, a distance of approximately 27 km.
Te economic CU0L iS 3O. IVI2 IMTH.
-126-
Year 2006
- Installation of lx200 MVA 230/115 kV transformer at Chiang Mai 3
Substation.
The economic cost is 129.7 MTHB.
Alternative C
Year 1998
- Termnination of the existing 230 kV Mae Moh 3 - Chiang Mai 3 and 115kV Lampang 2 - Lamphun 2 at Hang Chat Substation and installation of 2x200 MVA
230/115 kV transformers at Hang Chat Substation.
The economic cost is 519.3 MTHB.
Year 2000
- Reconstruction of the existing Mae Moh 2 - Lampang 1 - Lamphun Ifrom 115 kV single circuit line to 230 kV Mae Moh 3 - Saraphi double circuit line,
using 2x1,272 MCM ACSR conductor, a distance of approximately 124 km.
- Construction of 115 kV Mae Moh 3 - Lampang 1 line, double circuit
steel tower, using 795 MCM ACSR conductor, a distance of approximately 41 km.
- Construction of 115 kV Lamphun 2 - Lamphun 1 line, double circuit
steel tower, using 795 MCM ACSR conductor, a distance of approximately 16 km.
- Construction of 230 kV Saraphi Substation with 2x200 MVA 230/115kV transformers.
The economic cost is 1,975.7 MTHB.
-127-
Year 2006
- Reconstruction of 115 kV Saraphi - Chiang Mai 2 from double circuitline using 477 MCM ACSR conductor to doublc circuit line usinLg 2Lx179151 ACSR
conductor, a distance of approximately 16 km.
The economic cost is 193.7 MTHB.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are given
in Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 15,908.04
Alternative B 15,961.24
Alternative C 16,175.12
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.
(MTHB! -_ _ _
Alternative A VS. Altemative B 53.20 1.0033 N.A.
Alternative A VS. Alternative C 267.08 1.0168 > 150.00
Results of the analysis have led to the conclusion that the construction the
proposed construction of 115 kV Mae Moh 3 - Lampang 2 transmission system project
is the least cost alternative.
-128-
Table 4.39
Load Forecast for Lampang 2 Substation
Subpro*ct No.20
Fiscal Peak Demand Energy Demand Load FactorYear MW % Increase GWh % Increase (%)
1994 25.20 - 108.31 - 49.061995 25.65 1.79 109.02 0.66 48.521996 67.30 aX 162.38 267.82 a/ 145.66 45.431997 69.05 2.60 334.34 24.84 55.271998 70.89 2.66 342.36 2.40 55.131999 72.84 2.75 351.12 2.56 55.032000 114.89 a/ 57.73 510.81 a/ 45.48 50.752001 117.05 1.88 521.39 2.07 50.852002 119.33 1.95 531.28 1.90 50.822003 121.73 2.01 542.16 2.05 50.842004 124.26 2.08 553.92 2.17 50.892005 126.92 2.14 566.80 2.33 50.982006 129.72 2.21 580.90 2.49 51.12
Note a/ Highly demand increase due to demand of Siam Cement Factory.
-129-
Table 4 .4 0Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9
Region 4; Subproject No. 20
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 34608.37 34559.70 1.0014 48.676.00 26198.18 26150.55 1.0018 47.638.00 20252.76 20203.01 1.0025 49.74
10.00 15961.24 15908.04 1.0033 53.2012.00 12801.26 12744.25 1.0045 57.0114.00 10430.21 1036956 1.0058 60.6516.00 8619.41 8555.54 1.0075 63.8718.00 7213.53 7146.97 1.0093 66.5620.00 6105.28 6036.59 1.0114 68.6922.00 5219.34 5149.05 1.0137 70.3024.00 4501.99 4430.59 1.0161 71.4026.00 3914.31 3842.24 1.0188 72.07
Equalized Discount Rate is Not Applicable
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost . Net Benefit
4.00 35007.84 34559.70 1.0130 448.146.00 26521.32 26150.55 1.0142 370.778.00 20515.21 20203.01 1.0155 312.20
10.00 16175.12 15908.04 1.0168 267.0812.00 12976.02 12744.25 1.0182 231.7714.00 10573.25 10369.56 1.0196 203.6916.00 8736.59 8555.54 1.0212 181.0518.00 7309.50 7146.97 1.0227 162.5420.00 6183.80 6036.59 1.0244 147.2122.00 5283.43 5149.05 1.0261 134.3824.00 4554.10 4430.59 1.0279 123.5126.00 3956.45 3842.24 1.0297 114.21
Equalized Discount Rate is Greater Than 150%
Transmission System Planning Division21 - Mar-95
0114 PM
-130-
SUBPROJECT NO.21115 KV CHIANG MAI 2 - MAE TAENG LINE AND SUBSTATIONS
a) Load Forecast The electricity demand in this subproject area is forecasted as
shown in Table 4.41.
b) Alternative Plans The three possible alternative plans to serve the same technical
objectives of this subproject as described in Volume I (Main Report) are
Alternative A:
Year 1998
- Construction of 115 kV Chiang Mai 2 - Mae Taeng line, single circuit
on double circuit steel tower, using 795 MCM ACSR conductor, a distance of
approximately 42 km.
The economic cost is 259.6 MTHB.
Alternative B
Year 1998
- Installation of eighteen units of 2.5 MW diesel power plant at Mae
Taeng Substation.
The economic cost is 927.0 MTHB.
Year 2001
- Installation of six units of 2.5 MW diesel power plant at Mae Taeng
Substation.
-131 -
The economic cost is 309.0 MTHB.
Year 2005
- Installation of three units of 2.5 MW diesel power plant at Mae Taeng
Substation.
The economic cost is 154.5 MTHB.
Alternative C
Year 1998
- Installation of three units of 25 MW gas tturbine power plant at MaeTaeng Substation.
The economic cost is 1,134.0 MTHB.
The installation schedules of Alternative A, B and C are shown in Figures
4.10 to 4.12.
c) Power Flow Diagrams The power flow diagrams for the proposed plan are givenin Appendix 1.
d) Results of Economic Analysis
1. Comparison of Present Value
P.V. at 10 % DR. (MTHB)
Alternative A 14,818.93
Alternative B 15,392.43
Alternative C 15,431.49
-132-
2. Net Present Value and B/C Ratio
Net Present Value B/C Ratio EDR.(MTHB! (%)
Altemative A VS. Alternative B 573.50 1.0387 52.37
Alternative A VS. Alternative C 612.56 1.0413 110.56
Results of the analysis have led to the conclusion that the construction ofthe proposed 115 kV Chiang Mai 2 - Mae Taeng transmission system project is the leastcost alternative.
-133-
Table 4.41
Load Forecast for Mae Taeng Substation
Subprojwct Noll
Fiscal Peak Demand Energy Demanu Load FactorYear MW % Increase GWh % Increase (%)
1994 23.50 - 75.00 - 36.431995 26.10 11.06 84.60 12.80 37.001996 28.80 10.34 94.70 11.94 37.541997 31.60 9.72 105.20 11.09 38.001998 34.40 8.86 116.00 10.27 38.491999 37.20 8.14 126.90 9.40 38.942000 39.90 7.26 138.10 8.83 39.512001 42.60 6.77 149.30 8.11 40.012002 45.30 6.34 160.70 7.64 40.502003 47.90 5.74 172.10 7.09 41.012004 50.50 5.43 183.70 6.74 41.532005 53.10 5.15 195.50 6.42 42.032006 55.70 4.90 207.40 6.09 42.51
-134-
Tabl e 4.42Summary Result of Economic Analysis
Project Transmission System Expansion Project No. 9Region 4; Subproject No. 21
Cost Stream Alternative A
Benefit Stream Alternative B
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 35139.63 33638.85 1.0446 1500.796.00 26162.84 25088.44 1.0428 1074.398.00 19879.27 19099.46 1.0408 779.81
10.00 15392.43 14818.93 1.0387 573.5012.00 12126.83 11699.78 1.0365 427.0514.00 9706.56 9384.85 1.0343 321.7216.00 7881.81 7636.85 1.0321 244.9618.00 6483.78 6295.46 1.0299 188.3220.00 5396.54 5250.52 1.0278 146.0222.00 4539.17 4425.12 1.0258 114.0424.00 3854.35 3764.74 1.0238 89.6026.00 3300.86 3230.14 i.02i9 70.72
Equalized Discount Rate = 52.37%
Cost Stream Alternative A
Benefit Stream Alternative C
Discount Present Value Present Value B/C Present ValueRate of of Ratio of(%) Benefit Cost Net Benefit
4.00 35176.84 33638.85 1.0457 1537.996.00 26201.78 25088.44 1.0444 1113.348.00 19918.55 19099.46 1.0429 819.09
A10.00 15431.49 14818.93 1.0413 612.5612.00 12165.47 11699.78 1.0398 465.6814.00 9744.67 9384.85 1.0383 359.8216.00 7919.31 7636.85 1.0370 282.4618.00 6520.60 6295.46 1.0358 225.1320.00 5432.58 5250.52 1.0347 182.0622.00 4574.35 4425.12 1.0337 149.2324.00 3888.60 3764.74 1.0329 123.8626.00 3334.11 3230.14 1.0322 103.98
Equalized Discount Rate = 110.56%
Transmission System Planning Division21-Mar-95
O1:16 PM
-135-
Capacity (MW)150 -.. _
140 -130 -120 - E 115 kV Chiang Mai 2 - Mae Taeng
Val SC on DC/ST 795 MCM ACSR110 - c
100 - ,o90 B0
90 - _.c K Installed Capacity -
IL .80
70
60-
50 - |40-30 - PeakDemand
20-
10 -
0 - 1993 1 1994 1 1995 1 1996 1 1997 1 1998 1 1999 1 2000 2001 1 2002 1 2003 2004 1 2005 l 2006 1 2007
Fiscal Year
Figure 4.10 Installation Schedule for Subproject No.21(Mae Taeng Substation) Alternative A
Capacity (MW)150 -_
140 -130 -t
120- E 'xi
> 8~~~~0 -. IntleCa ai
7 0 -) A)|ptyC~~~~~~~ ~OCd)
110 i ]F lCwt
100 -
90-
70iguI Installed Capaly a
60 __Sti) eni.0 _________ ~~~~~~~~~~~~Firm Capacity
50- 5a.
40PekDmn30
20
1 0
1993 1994 11995 11996 1997 1998 1 i999 2000 2001 2002 2003 1 2004 2005 2006 2007-
Fiscal Year
Figure 4.11 installation Schedule for Subproject No.21(Mae Taeng Substation) Alternative B
Capacity (MW)
140 -130 -
120 - E Gas Turbine 3x25 MW
110 - XC100 _ _______________________
90 - Installed Capacity
80 0)00
70 -.
60 - Firm Capacity
40
30
20
10
0 - 1993 1994 1 1995 1 i996 1 1997 1 1998 1 1999 1 2000 ! 2001 1 2002 1 2003 1 2004 1 2005 1 2006 1 2007
Fiscal Year
Figure 4.12 Installation Schedule for Subproject No.21(Mae Taeng Substation) Alternative C
5. FINANCIAL JUSTIFICATION OF TS.9 PROJECT BASED ONTIME SLICE APPROACH
-139-
5. FINANCIAL JUSTIFICATION OF TS.9 PROJECT BASED ON TIME SLICE
APPROACH
5.1 Methodology of Analysis
First part of this report is the studies to prove that each proposed
subproject is the least cost among all of the technical viable alternatives to meet the
system requirements in each subproject area. The financial justification of the whole
package of the TS.9 Project is the second part of the economic viability study of the
project. The purpose of this study is to evaluate the economic and financial internal rate
of return (EIRR and FIRR) of the whole package of TS.9 project. However the benefit
accrued from the transmission system project cannot be directly calculated as the power
generation project, the technique of time slice analysis of the EGAT's overall PDP has
been therefore applied to calculate the EIRR and FIRR of the project. Although the
feasibility study of TS.9 project was started from 1994 and the construction of the
project will be completed in 1998, the period of 1995-1998 is selected for the time slice
study since the disbursement of the project started from 1995 and the study period
should be extended to cover the effect of implementing various types of power plantinto the PDP.
The EIRR or FIRR is the discount rate which equalizes the present value
of the economic or financial costs estimated for the EGAT's PDP to the benefit
expected from implementing this PDP over the period of 1995 to 1998.
The incremental revenue, incremental capital, fuel and O&M cost used for
the analysis are based on the PDP 95-01. All costs and benefits in terms of money
value are based on 1994 price level. Costs without taxes, IDC and escalation are used
for the EIRR study while the current cost with IDC and escalation are used for the FIIUt
study.
-140-
5.2 Capital Investment Costs
The capital costs are the investment costs of the power generation and
transmission projects which are involved in the EGAT least-cost Power Development
Plan during the study period (1995-1998).
5.3 Operation and Maintenance Costs (O&M Costs)
The O&M costs are assumed to be a fixed percentage of capital
investment costs as follows
% of Capital Cost
Oil/Gas-Fired Plant 2.5
Lignite-Fired Plant 3.0
Hydro Power Plant 1.0
Transmission System 1.5
5.4 Fuel Cost
Fuel prices, in real term at 1997 price, used in the EIRR study are the
same as used in the optimization of the latest EGAT's PDP (PDP 95-01); and the fuel
prices in current term used in the FIRR study are taken from the EGAT's financial
projection corresponding to PDP 95-01. Details of the prices for various types of fuel
are shown in Tables 5.1 to 5.2.
5.5 Revenues
The benefit of TS.9 project is obtained from the incremental energy sale
from the base year (1994). The EGAT average selling prices resulted from EGAl's
financial analysis to meet the financial covenant are used to calculate the incremental
revenues during the study period.
-141-
5.6 Results of the Studies
The results of eronomic and financial internal rate of return can be
summarized as follows
EIRR Stud FIRR Study
Internal Rate of Return (%) 11.77 4.51
-14,-
TABLE 5.1FUEL PRICE FOR OPTIMIZATION OF EGAT'S PDP 95-01
(CONSTANT 1994 PRICE)_ a/ _ b/ c/ c/ pi
Fiscal | Lignite (Mae Moh) Imported Coal Heavy Oil Diesel Oil Natural Gas Natural GasYear (0.5 % Sul hur (Myanmar
USD/MBtu USD/Ton % Inc. USD/MBtu USD/Ton % Inc. USD/MBtu THB/Litre % Inc. USD/MBtu THB/Utre % Inc. USDIMBtu THB/MBtu % Inc. USD/MBtu THB/MBtu % Inc.
1994 1.12 12.56 - 1.89 50.00 - 2.96 2.92 - 3.86 3.50 - 2.40 61.09 - - - -
1995 1.12 12.63 0.56 1.94 51.10 2.20 3.04 3.00 2.74 4.00 3.63 3.71 2.35 59.82 -2.08 - - -1996 1.13 12.68 0.40 1.97 52.10 1.96 3.07 3.03 1.00 4.09 3.71 2.20 2.36 60.26 0.74 - - -1997 1.14 12.75 0.55 1.99 52.60 0.96 3.15 3.11 2.64 4.24 3.84 3.50 2.38 60.74 0.80 - - -
1998i 1 14 12.82 0.55 2.02 53.20 1.14 3.23 3. 181 2.25 4.39 3.98 3.65 2.44 62.25 2.49 3.28 83.54 -
19991 1 15 12.89 0.55 2.03 53.70 0.94 3.21 3.261 2.52 4.56 4.13 3.77 2.50 63.66 2.27 3.28 83.54 0.002000 1 15 12.97 0.62 2.05 54.20 0.93 3.40 3.35 2.76 4.72 4.28 3.63 2.54 64.77 1.741 3.28 83.61 0.082001 1 16 13.01 0.31 2.06 54.40 0.37 3.37, 3.321 -0.90 4.69 4.25 -0.70 2.54 64.65 -0.19 ! 3.35, 85.43 2.182002 1.16 13.06 0.38 2.07 54.60 0.37 3.341 3.29. -0.90 1 4.65 4.22 -0.71 2.51 63.92! -1.13 3.37 86.05 0.732003 1.17 13.11 0.38 2.08 54.80 0.37 3.31 3 26 -0.91 4.62 4.19 -0.71 2.51 63.941 0.03! 3.39 8657 0.602004 1 17 13.16 0.38 2.09 55.10 0.55 3.28 3.23 -0.92 4.59 4.16 -072, 2.51 63.881 -0.09 3.421 87.10 0.612005 1.18 13.22 0.46 2.09 55.30 0.36 3.24 3.191 -1 24 4.56 4.13 -0.72 2.50 63.84 -0.06! 3.441 87.631 0.612006 1 18 13.30 0.61 2.09 55.30 0.00 3.24 3.19 0.00 4.56 4.13 0.00 2.51 63.94 0.161 3.45 88.10 0.542007 1,19 13.38 0.60 2.09 55.30 0.00 3.24 3.19 0.00 4.56 4.13 0.00 2.51 64.06 0.19 3.45 88.10 0.002008 1.20 13.48 0.75 2.09 55.30 0.00 3.24 3.19 0.00 4.56 4.13 0.00 2.51 64.07 0.02 3.45 88.10 0.002009 1.21 13.58 0.74 2.09 55.30 0.00 3.24 3.19 0.00 4.56 4.13 0.00 2.51 64.07 0.00 3.45 88.10 0.002010 1.22 13.69 0.81 2.09 55.30 0.00 3.24 3.19 0.00 4.56 4.13 0.00 2.51 64.07 0.00 3.45 88.10 0.002011 1 23 13.81 0.88 2.09 55.30 0.00 3.24 3.19 0.00 4.56 4.13 0.00 2.51 64.07 0.00 3.45 88.10 0.00
Notes: I Based on producion costotUSD1 2.3/ton (estmated by Mine Engineering Departmnenton May 3,1994) January 11,19952j Based on FOB price estimated by IBRD (June 1994) and included treight and insurance cost of USD 7.0/ton and inland transportation cost of USD 6.0/ton.
c/ Estimated by PTT on Novenber 15,1994.
Souroe: EGAT's Power Developmnent Plan 95-01 (Volume I : Main Report).
TABLE 5.2FUEL PRICE FOR OPTIMIZATION OF EGAT'S PDP 95-01
(CURRENT PRICE)
Fiscal Lignite (Mae Moh) Imported Coal Heavy Oil Diesel Oil Natural Gas Natural GasYear (0.5 %Sul ( Manmart
USD/MBtu USD/Ton % Inc. USD/MBtu USD/Ton % Inc. USD/MBtu |THB/Litre % Inc. USD/MBtu TIHB/Lilre % Inc. USD/MBtu THB/MBtu % Inc. USD/MBtu THB/MBtu % Inc.
1994 1.98 19.67 - 1.91 50.44 - 3.62 3.57 - 6.43 5.83 - 2.71 69.12 - - - -1995 1.75 17.39 -11.59 2.00 52.84 4.76 3.77 3.72 4.20 6.66 6.04 3.60 2.68 68.29 -1.20 - - -1996 1.84 18.27 5.06 2.09 55.29 4.64 3.92 3.87 4.03 6.89 6.24 3.31 2.78 70.77 3.63 - - -1997 1.93 19.22 5.20 2.18 57.46 3.92 4.12 4.07 5.17 7.16 6.50 4.17 2.88 73.45 3.79 - - -1998 2.03 20.20 5.10 2.26 59.65 3.81 4.33 4.27 4.91 7.46 6.77 4.15 3.02 77.12 5.00 3.77 96.17 -1999 2.14 21.25 5.20 2.34 61.85 3.69 4.55 4.49 5.15 7.77 7.05 4.14 3.16 80.56 4.46 3.77 96.24 0.0712000, 2.25 22.34 5.13 2.43 64.27 3.91 4.80 4.73 5.35 8.12 7.36 4.40 3.27 83.50 3.65 3.97 101.11 5.062001 2.37 23.50 5.19 2.50 66.08 2.82| 4 .86l 4.79 1.27 8.23 7.46 1.36 3.33 85.01 1.81 4.11 104.81 3.6612002 2.49 24.71 5.15 2.58 68.01 2.92 4.92 4.85 1.25 8.33 7.55 1.21 3.37 85.86 1.00 4.18 106.71 1.81j2003 2.61 25.98 5.14 2.65 69.96 2.87 4.98 4.92 1.441 8.44 7.65 1.32 3.43 87.51 1.92 4.25 108.47 1.652004 2.75 27.33 5.20 2.72 71.92 2.80 5.06 4.99 1.421 8.56 7.76 1.44 3.49 89.10 1.82| 4.33 110.31 1.702005 2.89 28.75 5.20 2.80 74.01 2.91 5.13 5.06 1.40 8.67 7.86 1.29 3.56 90.81 1.92 4.40 112.14; 1.662006 3.04 30.24 5.18 2.831 74.601 0.80 5.14 5.07 0.20 8.70 7.89 0.38 3.63 92.60 1,97 4.46 113.85 1.5212007 3.20 31.81 5.19 2.85 75.20 0.80 5.141 5.07 0.00 8.74 7.93 0.51 3.75 95.58 3.22 4.51 115.02 1.032008 3.37 33.47 5.22 2.87 75.83 0.84 5.15| 5.07 0.00 8.77 7.95 0.25 3.80 96.84 1.32 4.56 116.19 1.022009 3.54 35.21 5.20 2.90 76.48 0.86 5.15 5.07 0.00 8.81 7.99 0.50 3.84 97.60 0.78 4.62 117.88 1.452010 3.73 37.04 5.20 2.92 77.15 0.88 5.16 5.08 0.20 8.85 8.02 0.38 3.96 100.96 3.44 4.65 118.59 0.602011 3.92 38.98 5.24 2.95 77.85 0.911 5.16 5.09 0.20 8.89 8.06 0.50 4.08 104.01 3.02 4.70 119.85 1.06Notes a/ Transfer price of lignite estimated by Account Department. January 1 i,t995
b/ Based on FOB price estimated by IBRD (June 1994) and included freight end insurance cost of USD 7.0/ton, import duty of 1% of FOB price and inland transportation cost of USD 6.0/ton.c/ Estimated by PTT on November 15,1994.
Source: EGAT's Powar Development Plan 95-01 (Volume li: Financial Analysis).
TABLE 5.3CALCULATION OF EIRR OF EGAT'S PDP 95-01 (1995-1998)
TRANSMISSION SYSTEM EXPANSION PROJECT NO.9
Fiscal Cost Stream Benefit Stream NetYear Capital O&M Incremental Total Total Incremental Average Selling Price Sale Benefit
Cost Cost Energy Cost Energy Energy Sale THE/kWh) Revenue (MTHB)Cost Sale (GWh) (GWh) Current Price 1994 Price (MTHB)
1991 387.98 387.98 -387.981992 1403.43 1403.43 -- 1403.431993 5911.93 5911.93 -5911.93
-1994 15628.98 15628.98 63643.3 -15628.981995 23521.00 632.77 8604.67 32758.44 71577.1 7933.81 1.3603 1.3080 10377.27 -22381.171996 18629.71 1461.53 16559•36 36650.59 78786.4 15143.04 1.4363 1.3279 20109.05 -16541.541997 9831.66 1771.95 22386.74 33990.34 85524.8 21881.42 1.5334 1.3632 29828.47 -4161.881998 5611.30 1978.09 24873.59 32462.98 92472.8 28829.45 1.5556 1.3297 38335.48 5872.511999 1978.09 24873.59 26851.68 92472.8| 28829.45 1.5556 1.3297 38335.48 11483.811 2000 1978.09 1 24873.59 26851.68 92472.8 ! 28829.45 1.5556 1.3297 38335.48 11483.812001 1978.09 1 24873.59 26851.68 92472.8 28829.45 1.5556 1.3297 38335.48 11483.8120021 1978.09 24873.591 26851 68 92472.8 28829.45 1.55561 1.3297 38335.48) 11483.812003 1978.091 24873.59 26851.68 92472.81 28829.45 1.5556 1.3297 38335.48 11483.812004 | 1978.09 24873.59 26851.68 92472.8 28829.45 | .55S6 1.3297 38335.48 11453.812005 1 1978.091 24873.591 26851.68 92472.08 28829.451 1.5556 1.3297 38335.48! 11483.812006 1978.091 24873.59 26851.68 92472.8 28829.45) 1.5556 1.3297 38335.48 11483.812007 1978.09| 24873.59 26851.68 92472.8 28829.45 1.5556 1.3297 3833548! 11483.812008 1978.09 24873.59 26851.68 92472.8 28829.45 1.5556 1.3297 38335.48 11483.812009 1978.09 24873.59 26851.68 92472.8 28829.45 1.5556 1.3297 38335.48 11483.812010 1978.09 24873.59 26851.68 92472.8 28829.45 1.5556 1.3297 38335.48 11483.812011 1978.09 24873.59 26851.68 92472.5) 28829.45 1.5556 1.3297 38335.48 11483.812012 1978.09 24873.59 26851.68 92472.8 28829.45 1.5556 1.3297 38335.48 11483.812013 1978.09 24873.59 26851.68 92472.8 28829.45 1.5556 1.3297 38335.48 11483.812014 1978.09 24873.59 26851.68 92472.E; 28829.45 1.5556 1.3297 38335.48 11483.812015 1978.09 24873.59 26851.68 92472.8 28829.45 1.5556 1.3297 38335.48 11483.812016 1978.09 24873.59 26851.68 92472,1 28829.45 1.5556 1.3297 38335.48 11483.812017 1978.09 24873.59 26851.68 92472.8| 28829.45 1.5556 1.3297 38335.48 11483.812018 1978.09 24873.59 ! 26851.68 92472.8 28829.45 1.5556 1.3297 38335.48 11483.812019| -8264.69 1978.09 24373.591 18586.99 92472,8 | 28829.45 1.5556 1 1.3297 38335.48 19748.50
Total 72661.30 47384.18 594769.71 714815.19 - - - - 903695.40 188880.22P.V.
5o%OR s37808e4 1 _12134.02 151952.64 217867.50 _ j - _ - 226222.04 8354.54
Economic Internal Rate of Return - 11.77%30-Mar-95
TABLE 5.4CALCULATION OF FIRR OF EGAT'S PDP 95-01 (1995-1998)
TRANSMISSION SYSTEM EXPANSION PROJECT NO. 9
Fiscal Cost Stream Benefit Stream NetYear Capital O&M Incremental Total Total Incremental Average Selling Price Sale Benefit
Cost Cost Energy Cost Energy Energy Sale (TH /kWh Revenue (MTHB)1991 397.58 Cost Sale (GWh) (GWh) Current Prce 1994 Prce (MTHB) _ 9.1991 397.58 397.58 -397.58
1992 1439.83 1439.83 -1439.831993 6499.23 6499.23 -6499.231994 17332.00 17332.00 63643.3 -17332.001995 27553.26 726.57 9335.67 37615.50 71577.1 7933.81 1.3603 1.3080 10792.36 -26823.141996 24292.65 1743.33 20515.44 46551.42 78786.4 15143.04 1.4363 1.3279 21749.95 -24801.471997 13028.85 2118.87 31305.83 46453.55 85524.8 21881.42 1.5334 1.3632 33552.97 -12900.581 998 7423.70 2381.37 35121.17 44926.25 92472.8 28829.45 1.5556 1.3297 44847.09 -79.151999 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552000 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552001 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552002 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552003 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552004 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.55
4o- 2005 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552006 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552007 2381.37 35121.17 37502.55 92472.8 28829 45 1.5556 1.3297 44847.09 7344.552008 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552009 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552010 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552011 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552012 2381.37 35121.17 37502.55 92472 8 28829.45 1.5556 1.3297 44847.09 7344.552013 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552014 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552015 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552016 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552017 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552018 2381.37 35121.17 37502.55 92472.8 28829.45 1.5556 1.3297 44847.09 7344.552019 - 10319.98 _ 2381.37 35121.17 _ 27182.57 92472.8 _ 28829.45 1.5556 1.3297 44847.09 17664.53
Total 87647.12 56978.96 833822.74 978448.82 - - - - 1052731.31 74282.49P.V.
@00%Drt 64451.00 14565.67 210681.85 289698.53 _ _ _ - 261867.78 -27830.74
Financial Internal Rate of Return 4.51%26- May-95
APPENDIX 1
LOAD FLOW DIAGRAMS
OF THE PROPOSED PLAN OF EACH SUBPROJECT
-147-
TO SAI NOI14 -140
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01A7-T59 DR CAS NCS-98P-1O |r ll
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Subproject No. 14SYSTEMS PLANNING DEPT, LOAD JUN 93, PDP 94-01,KNE- 990-1 PEAK LOAD 1 1 KV. HAT YAI 2 - PATTANI I CCT TRIPPED CASE KNEi- 99P -
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Subproject No. 14
. |SYSTEMS PLANNING DEPT. LOAD JUN 93, PDP 9- 01NTS 9- 098 |PEAK LOAD | IH 2S0O6' KHLONG NGAE -YALA DC/ST 1272 MCM. |CASE KNE - 98P -1 0|,f|DIA S .TS 9 i 998 11
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Subproject No. 15
SYSTEMS PLANNING DEPT. LOAD JUN 93. PDP 94-01 PK -970- 10 PEAK LOAD -1\A'f" DIAs. Ts 9 1999 NOMA OERTINCAE K-9P 1
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Subproject No. 15
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Subproject No. 15 ISYSTEMS PLANNING DEPT. AD JUN 95, PDPP 9401,NTSQ - 096 PEAK LOAD VTH NEW 115KV. PHANGNGA - PHUKET 2 DCST CASE PK.. 98P-10|DIA3. TSO 1998 1
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| SYSTEMS PLANNING DEPT, LOAD JUN93,PDP94- 01.BDN -980 - PEAK LOAD | NORMAL OPERATION CASE BDN 98P-10r v TC 0 1
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______________________________________________________________________u Subproject No. 17
SYSTEMS PLANNING DEPT, LOAD JUN 93. PDP 94- 01 ,NTS 9 - 098 PEAK LOAD WIH1 KISRTTAI-A O N C AEB\ 70I I DIA 3. TS 9 1998 W 5 S A - D 2N T C
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Subproject No. 18
,~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~40 , .1
J8 ;: | s.'r_T0M PLASIMNG DEPT LOAD 1!N9., PDP 9-0' 97020 | PEAK LOAD | I._. 1 2 27007 NORMAL CASE CASE CR-97P-10
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_________ ____ ___ ___________ ___________________________ I. Subproject Na. 181
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APPENDIX 2
FULL NAME AND ABBREVIATION OF SUBSTATION
-217-
.. I ' -
FUIL NAM[ AND ABB3REVIATION OF SUBSTATION
4O. SUBSTATIONS ABBR. NO. SUBSTATIONS ABBR. N. SUBSTATIONS ABBR.
_. AnlNAT CHAROEN AN SS. TA- D0 RA LR 169. PHUKET 112 PKI12
2. ANG THONG 162 ATlb2 86. LAn TAKHONG _LK 17O. PHUNPHIN PP
3. AO PHAI 162 _ApI2 8 7. LAMPANC 1/2 L.PlP2 I& . PONG BON PBO
4.- AO UDOII AU BO8 1AMPHUN 11.2 LNI&2 172. IPRACHII4 BURl 142 PAI1.2
5.ARANYAPRATHET AR 89- LAN RABU 1KB 173. IPRACHUAP KHIRI KHAN PKK
6. AYuTTHAYA 1t2 ATII2 I 0- LAT PHRAO LPR 174. PRAXHON CHAI PrKAC
7. fAnWFT NARn. OA7 RUN IJ I UI 7% DPRA RI
B- BAN BUNG _BHG 92- ... I_ _ t . PfRAN BUfll PO?WER STAT IUN PflT
9. BAN COK CHAN2 BCC 99. _ O SONAJJAPRABHA .CHIEE LARN) RPB
T. VET UOOM 00 136. NA~~~~~~~~~~~LOI LUEN 1722. JAR12TAl
. WANR DON ABDN 94. Lon SAK LS2 IN. TRANCSIT RS
_. RAN DUNGC _ 8G _9. LOP BURI 162 81_6_2 2379. TRANONG RN
12H.BAN KHA N KLAN2 HBK_ 146- NLOAER MAE PING LMP N 80. HRANOT- RA
HO. BAN NA SAN NS 197. nAE CHAET Mc a N 25. RATCHABURI 1.2NG RBI.26J
14. BAN PHAI HH 14 9N- InAE CHAN LAN Pa2U RATCHANVR6 224. THAKA 2BP21
HS. BAN PONG HH2 8P1 .2 nAE HONG SON nH 283. RATCHADAPHISEK RPS
16.BAN SANTI HST 100. nAE KHAn NHr 2248 RAroNG TY2&3 RYl.2&3
Ir. BAN YANG___r Brc IOI. InAE KOK nKK 185. ROI ET RE
HU. BANG KAI HN 102- InAE KUH LUANG (NEA) nKL 186. SAHA HoN S
9g BANG LAnUNG BL IOJ. MAE K IANG MKC 187~ SADA0 SOO
20-0ANC LANG BLG 104M AE LAMA LUANGC nLL fg8A SAI NOI SNO
21 8BANG MAU NAK BMN 160. MAE nOH 1.2PJ 244.2& . UPPESAI BURI SBR
?2. BANG PA-IN 1 BNlE2 106. HAE HAO MINE n- 190- TSAKON GAKHON 192 Soit2
3. BANG PAKONC - PK 107. PAE NCAI N P I194. SALoKTAR SLB
BANG SAPHAN BS N 109. MAE SARIANC _2SR 932. sAnuT SAKHON 1.26J SNI K2
*KRIDA-RNIHUAK SAHA H R SN 14. MAHO SO Hs 194. SAEUT HAENGKC MS
?7. BEToNc 8A I IPOnAE TAENG POT 195. SAN KAPI SKP
K8R. KHuABOL Be 112-. nHA sARAKHAA MK 19r5 SANT KHA ALA
VIO WIN OW -N29 AN- AR 19 SARABIJRI 162 SRI
iO. 9VUSi KA. Soi 4. TA P;;uT NTP F 98. SA-Ah iR j &, SRJ3&4. IUNC sAn PHAN BGS I Is. lnuKoAHAN 162 ME) 62 W 19 s S AI 162 |si
iJ. URI RAM -- UR 116 I|NA KAE (OUT'OF SERVICE) H E 1l200 |SATUN |sTu
Zi. lCHA-An CA 1 17. |NAKHON CHAISI |NCS 1l201. 1SAWANKHALOK SC _1
5,_ |CAEG WATTMANA - _ _W 120 |NAKHON PAHAOM NT 12 120.S RAlKHA --- SC- -
9 |CHiANG KAN -CKT 12J. [AKHON Si THAMnARAT | NST | 207r |SINC POURI SlU
O. IC"IANC MAI 1 .243 cHI . 24 124. lNAM CHOEN _ NCE 1 20a. ISIRIKI I SKI . CH IANG RA I CR 125. NAM CHON |NCN 209 I S IR INDHORN SRD
2v .CHUPON CHICP 12lJ. INAM HAENi NSNHA 1 iUI Su
D.COEnBUNG NACB- 1276 [NAii SUH-E* NAKI S|2) rK | rLe
. HONC THON CTG 12| INAM L3UA NA§E 2PHU SOT DLAN KU so6I H
. IHUAI NCAEO _ H~~~~~CNC 129. NM KHAN NM 21122. SOUTHA THUNC HAR ISTB
C1 HUNKHVI HPK 146. INAMT NGACOK NNA 214. SRTHATARINOH NR
CHONG KLAK CHSK I131. |NUCLEARU NNC _11 2JI UIHA THUNC ST?
3.KCHNG; EKRUC -KB| 132 9A |PAK r CUN 21 SH=|2. |THVN-HNKOLUK S TPTIAENC UATEN PS S PKHUNG I& NPO& 1217 2J4 UIHAHNC I STK
CHUKPAEN CPAN 1I4 NAM PVNT NlHn|PH 1|2;8 SUA TRANC _ _ | SRT
CH. PO CP?TNGK 135. NPANC KHON T PHK 1240. SUORITNA S- I R
5. DOEMANG ALK UAT KBN I115R. NPAMTrHAEUNs | NpN 221.-,,O TAK .CHAHAN 182 I KIfH&2
|KHLNC FAAI_ | LTl NAMO HT KHEUHN 2 HSj NTH2 ||245. TAPER AE PI, | IU_
i.L4 GETRBNGKOK _B|KK Ilag. N6? CAM UAII[ NPB 1226. IUTARADOIT TMO
KIIHATN YHAI SAP H A HYIN)IRD1140 MA5-HN NA PO2249 T IECHAKENC I I H
IKLANC _S KA HA 11416. IHNARtHONCT NW PD 21250 IXESE MAN HKUAYI HO HHA 11425. NIPHRA Af PHUTTAA NTB .1226 THALAN 1I4. TL I2
IKUAI NGE HNO 11456. IPHRAN _ |A NK 12529: THASTHUN NA TNHUAI PHUKNI HPK 146. INORTH BANKOK No 2.30. THTR PS1 ANSOIISSE P^KN TIIN
KABIDN IJR K-B11)- nARC NUHON 2295EPAA