initiatives in transmission systems along india – nepal border september 23, 2008 kathmandu
TRANSCRIPT
Initiatives in Transmission Systems Along
India – Nepal border
September 23, 2008Kathmandu
Privileged & Confidential
Presentation Structure
Nepal Power Scenario
Cross Border Transmission Links
Muzaffarpur-Dhalkebar Transmission Link
Strengthening of INPS
Issues Technical Regulatory & Commercial
Way Forward
Privileged & Confidential
• Present installed capacity - 617 MW
562 MW is hydropower, mostly Run-of-River Import from India (60-70 MW) thru’ radial links
• Current Deficit (dry winter season) - 150-200 MW
• Nepal Hydropower potential - 83,000 MW
• Economically feasible - 42,000 MW
Nepal’s Power Scenario
Privileged & Confidential
Privileged & Confidential
• Projects under development - 23,000 MW
• By 2014-15, Nepal with ongoing & planned HEPs
would have surplus power - 500-700 MW
• India perpetually power deficit, potential exists for
exchange of power between India & Nepal
• Schedule for exchange of powerFirst 5 yrs – for export to Nepal - 100 - 250 MW
Beyond 5 yrs – Nepal to export - 500 - 700 MW
Robust Transmission Link required between India & Nepal
Nepal’s Power Scenario (contd..)
Privileged & Confidential
Issues in Hydro Power Development
Privileged & Confidential
• Large Projects (> 200 MW)
• Large investments required
• Complicated structuring
• Commensurate availability of load
• Have to look for export markets
• Would generally require dedicated
transmission lines
Issues in Hydro Power Development
Privileged & Confidential
• Small & Medium Projects (< 200 MW)
• Significant potential of such projects• To develop optimal economic capacity we need
seasonal/ part exports - cannot afford dedicated transmission lines
• To that end, we together with NEA are working on the Indo-Nepal interconnection
• Interconnection expected to give a boost to such project which would help meet domestic demands with export of surplus power
Issues in Hydro Power Development
Privileged & Confidential
Cross Border Transmission Links
Privileged & Confidential
Transmission Link Details
SUNAULI
ANANDNAGAR
GORAKHPUR
MOTIHARI
MUZAFFARPUR
SITAMARHI
RAMNAGAR
BETTIAH
PURNEA
N E P A L
I N D I A
KALIGANDAKI
MARSYANGDIANDHI KHOLA
MODI KHOLA
BHOTEKOSHI
SUNKOSHI
MIDDLE
SETI
TRISULI
DEVIGHATINDRAWATI-III
PANAUTI
KHIMTIKULEKHANI-I
KULEKHANI-IIGANDAK
JHIMRUK CHILIME
C H I N A
LEGEND
132 kV TRANSMISSION LINE
PROPOSED HYDRO-POWER STATION
INTERNATIONAL BORDER
ZONAL BORDER
ARUN 3
LOWER ARUN
KABELI "A"
KANKAI
RAHUGHAT
LIKHU-IV
UPPER MARSYANGDI
KHIMTI-II
UPPER SETI
UPPER TAMAKOSHI
LOWER
UPPER KARNALI
132/ 220 kV LINE ANALYZED IN THIS STUDY
EXISTING HYDRO-POWER STATION
TO SILIGURI
BHOTEKOSHI
MARSYANGDI
LAHAN
DUHABI ANARMANI
DHALKEBAR
HETAUDA
BHARATPURBARDGHAT
BUTWALSHIVPUR
LAMAHI
KOHALPUR
KATHMANDU
POKHARA
BIRGUNJ
Phase 1
NEA jointly with IL&FS is working for setting up Cross Border Transmission links for exchange of power from/to Nepal.
The following four transmission links identified for implementation in phases:
Sr. No.
Transmission Line Length in India (Approx
Kms)
Length in Nepal
(Approx Kms)
Total Length (Approx Kms)
1 Bhutwal - Gorakhpur 100 30 130
2 Duhabi - Purnea 90 30 120
3 Dhalkebar - Muzaffarpur
100 45 145
4 Anarmani - Siliguri 40 25 65
Privileged & Confidential
Interconnection details
SUNAULI
ANANDNAGAR
GORAKHPUR
MOTIHARI
MUZAFFARPUR
SITAMARHI
RAMNAGAR
BETTIAH
PURNEA
N E P A L
I N D I A
KALIGANDAKI
MARSYANGDIANDHI KHOLA
MODI KHOLA
BHOTEKOSHI
SUNKOSHI
MIDDLE
SETI
TRISULI
DEVIGHAT
INDRAWATI-III
PANAUTI
KHIMTIKULEKHANI-I
KULEKHANI-IIGANDAK
JHIMRUK CHILIME
C H I N A
LEGEND
132 kV TRANSMISSION LINE
PROPOSED HYDRO-POWER STATION
INTERNATIONAL BORDER
ZONAL BORDER
ARUN 3
LOWER ARUN
KABELI "A"
KANKAI
RAHUGHAT
LIKHU-IV
UPPER MARSYANGDI
KHIMTI-II
UPPER SETI
UPPER TAMAKOSHI
LOWER
UPPER KARNALI
132/ 220 kV LINE ANALYZED IN THIS STUDY
EXISTING HYDRO-POWER STATION
TO SILIGURI
BHOTEKOSHI
MARSYANGDI
LAHAN
DUHABI ANARMANI
DHALKEBAR
HETAUDA
BHARATPURBARDGHAT
BUTWALSHIVPUR
LAMAHI
KOHALPUR
KATHMANDU
POKHARA
BIRGUNJ
Phase I
Privileged & Confidential
In Sep 2007, Indian & Nepalese Authorities decided
multiple connections would create loop flow Presently Nepal system to sustain only one inter-connection.
400 KV, D/C Muzaffarpur - Dhalkebar Tr. line be implemented in first phase
Initially to be charged at 220 kV to operate in synchronous mode.
Development of Interconnections
Privileged & Confidential
400 KV Dhalkebar – Muzaffarpur Transmission Line
Privileged & Confidential
Two JV Companies formed for implementation in respective territories
Cross Border Power Transmission Company (CPTC) for Indian portion - 19 Dec 2006(100% owned subsidiary of IL & FS IDC with a provision for equity participation from NEA(26%), Powergrid(26%), PTC(11%) & others; SJVNL confirmed equity participation up to 26%)
Power Transmission Company Nepal (PTCN) for Nepal portion - 16 Sep 2007
(50:50 JV Company of NEA & IL & FS IDC with a provision to divest 24% of IL & FS IDC equity to FIs & Banks of Nepal)
Project Implementation
Privileged & Confidential
Muzaffarpur (India) to Dhalkhebar (Nepal) 400KV D/C Transmission link – 145 Kms on BOO basis 100 Km - Indian portion by JVC India
Cross Border Power Transmission Pvt. Ltd. (CPTC)
45 KM - Nepal portion by JVC Nepal
Power Transmission Company Nepal Ltd. (PTCN)
Commissioning Schedule End 2010
Estimated Project Cost INR 233 Crs Indian portion INR 151 Crs
Nepalese portion INR 82 Crs
Project details
Privileged & Confidential
Route survey on both sides - February
2008
EoI for EPC for both portions - April 2008
Response received from all leading (13) transmission
EPC firms in India.
Section 68 -MoP approval -16 May 2008
Draft ITSA circulated to NEA - Sep 2008
Project development status
Privileged & Confidential
Issues
Privileged & Confidential
• Synchronous Operation
An AC interconnection between the grids which operate in synchronism – same frequency, voltage, stability & reliability criteria
Suitable for exchange of larger quantum of power economically and convenience of scalability
Regulation and control of power flow is difficult
Both grid systems are to be operated on same real time parameters, for which Dynamic study is in progress.
Technical
Privileged & Confidential
• Strengthening of INPS
Integrated Nepal Power System (“INPS”) mainly comprises of 132 kV and 66 kV lines spanning from East to West in Nepal
Present transmission backbone is weak in certain sections, inadequate to meet the transfer of power during peaking
As a short term measure, following strengthening of INPS required matching with implementation of Dhalkebar - Muzaffarpur Tr. line• Dhalkebar to Bardaghat via Hetauda• Dhalkebar to Duhabi
Technical (contd..)
Privileged & Confidential
Regulatory & Commercial
Issue concerning similar grid code and O & M procedure to be adhered to
Similar tariff mechanism i.e. UI mechanism need to be adopted for power exchange
MoA amongst NEA, PTC India & IL&FS IDC for import & export of power signed on 29 Feb 2008.
NEA to finalise the monthwise power requirement for next 5-7 years & negotiate with PTC India for a commercial arrangement.
Privileged & Confidential
Way Forward
Transmission strengthening of INPS required matching with implementation of Dhalkebar – Muzaffarpur line• Dhalkebar to Bardaghat via Hetauda• Dhalkebar to Duhabi
Completion of Dynamic study and implementation of recommendations thereof.
Finalisation of monthwise power requirement for import of power by NEA for next 5-7 years & negotiate with PTC India for a commercial arrangement.
Beyond 5-7 years, to identify power export & tie up arrangement by PTC India.
Privileged & Confidential
• Present transmission backbone is weak in certain sections, inadequate to meet the transfer of power during peaking as well as receive more than 200MW power from Indian grid
• The proposed plan that is under consideration as a medium/long term solution
• To have a strong EW interconnection• Valley wise development of hydro power with associated
development of transmission meeting the EW interconnection
• Connection of load points to the EW interconnection• Indo-Nepal interconnections to be extended to join the
EW interconnection • IL&FS working with NEA to jointly facilitate this effort
Way Forward
Thank you