specification details chapter-3

8/13/2019 Specification Details Chapter-3

1/17

Central Electricity Authority Requirement of Equipment & Material for Development of Power Sector

CHAPTER -3

REQUIREMENT OF ELECTRICAL EQUIPMENTS

In this Chapter, the requirement of electrical and mechanical equipments has been

assessed for power generation stations, both hydro and thermal plants, as well as for

power substations. This requirement has been worked out corresponding to the tentative

capacity addition during the 11thand 12thlans.

!quipment for nuclear stations has not been considered as the same is separately

e"pected to be done by #uclear ower Corporation. $lso the requirement of equipments

and materials for nuclear plants is difficult to estimate which in any case is e"pected to be

%2&& '( and ))&& '( in the 11th and 12thlans respectively and therefore a smallfraction of the total tentative capacity addition.

3.1 REQUIREMENT OF ELECTRICAL EQUIPMENTS FOR GENERATIONPLANTS (INCLUDING SWITCHYARD EQUIPMENT)

The estimated requirement of electrical equipments for generation plants coming up

during the 11thlan and 12thlans has been worked out considering tentative capacity

addition identified for these lans, details of which have been furnished in Chapter 2.

Thermal pro*ects for commissioning during the 11thand 12thlan have been categori+ed

in five ma*or groups on the basis of their unit si+es. In case of thermal plants, requirement

of ma*or electrical equipment has been worked out for one unit of each of these categories

and subsequently depending on the number of units in the respective categories, the total

requirement has been assessed for 11th and 12th lans. In case of hydro units such

categorisation is not tenable since each pro*ect is site specific and therefore the total

requirement of ma*or equipments has been worked out for the 11th and 12th lan.

witchyard equipment at the generating stations has also been included. -etails of the

above assessment are given below.

3.1.1 Therm! P"#er P!$%&(I$'!*$+ S#*%'h,r E*me$%)

The thermal plants have been categori+ed into five categories based on the unit si+ei.e. &/)&& '(, 0&& '(, %&&/20&/21& '( class and 120 '( for coal/lignite plants,

and gas/# modules. In case of as/# based power pro*ects, numbers of

modules3 comprising of 2Ts and 1 T4 corresponding to each pro*ect have been

assessed for 11th5 12thplans separately and as per the norms of equipment required for a

typical %& '( gas module, the total requirement of electrical equipment has been

assessed. The requirement of electrical equipments for switchyards at the generating

station has also been indicated.

i4 Item wise requirement of equipment for &/)&& '( category of thermal

plants during 11thand 12thlans is given in Table %.1.

3.1 6!78I6!'!#T 9: !!CT6IC$ !78I'!#T


2/17


Table;%.1

Requirement of Equipments for 660/800 Mw Coal/Lignite Based Units of 11th

lan and 1!thlan Capa"it# $ddition rogramme

I%em

Re*reme$%/"r

O$e $*% "/00 MW

11%hP!$ 12%hP!$ T"%!

12 U$*%&(0 Pr"e'%&)

4 U$*%&(1 Pr"e'%&)

52 U$*%&(10 Pr"e'%&)

GT6 20M7A Ge$ 7842893:7Three h&e ;$: %

%2& >%2& 12111.1 :7 C"$%r"! C;!e(:m) %=


3/17


%a&le'()!

Requirement of Equipment for *00 M+ Coal/Lignite Based Units of 11thlan and 1!th

lan Capa"it# $ddition rogramme

I%em

Re*reme$%/"r

O$e $*% "/5 MW

11%hP!$ 12%hP!$ T"%!

4 U$*%&(3 Pr"e'%&)

1B U$*%&(1 Pr"e'%&)

05 U$*%&(4 Pr"e'%&)

GT6 2M7A Ge$ 7842893:7Three Phase Bank % 1=1 < 2%0

ST B8484M7A132811.5811.5 :7 1


4/17


***)Item wise requirement of equipment for %&&/20&/ 21& '( category of thermal plantsduring 11thand 12thlans is given in Table %.%.

Table-3.3

Requirement of Equipment for (00/!*0/!10 M+ Class Coal/Lignite BasedUnits of 11thlan and 1!thlan Capa"it# $ddition rogramme

I%em

Re*reme$% /"rO$e $*% "/

3825821 MW

11%hP!$ 12%hP!$ T"%!45 U$*%&

(2 Pr"e'%&)14 U$*%&

(12 Pr"e'%&)5< U$*%&

(31 Pr"e'%&)GT6 315M7AGe$ 7823:7Three Ph&e 1 =2 1) >&ST 5582.582.5 M7A2280.& 2) 11)

M*&' Ser=*'e Tr$& 1M7A0.0811.5 1 11 :7 S#*%'h+er 10 =0 21& ))00.0 :7 S#*%'h+er >


5/17


T;!e-3.4

Requirement of Equipment for 1!* M+ Coal/Lignite Based Units ,f 11thlan

Capa"it# $ddition rogramme

ITEM

Re*reme$% /"rO$e $*% "/ 125

MW

11%hP!$ U$*%

( 4 Pr"e'%&)GT6 10M7A Three Ph&e 1 11ST 5582.582.5 M7A 1 =UT 2M7A 2 1 =2HT M"%"r&


6/17


T;!e-3.5Requirement of Equipment for -as/L.- Based Units

of 11thlan and 1!thlan Capa"it# $ddition rogramme

I%em

Re*reme$%/"r O$e m"!e

(30 MW)

11%hP!$< m"!e&

( r"e'%&)Ge$. Tr$&/"rmer(2 $"&. 114 M7A 1 $"&.140M7A) % % Tr$&/"rmer 2 M7A 2 18HT M"%"r& 1% 117LT M"%"r& % 324LT Tr$&/"rmer& 1& 90415 7 S#*%'h+er P$e! 1= 153DC ?%%er, = 63

?%%er, Chr+er 11 99Emer+e$', DG Se% 1 16Ge$. C*r'*% ?re:er 540.0 :7 S#*%'h+er %1 279HT P"#er C;!e (:m) 2&& 1800LT P"#er C"$%r"! C;!e (:m) 0&& 4500

) 1 no. spare T and 1 no. spare - have been considered for each pro*ect

=*) Total requirement of equipment 3Item wise4 for thermal plants during 11and12thlans is given in Table %..

3. 6!78I6!'!#T 9: !!CT6IC$ !78I'!#T


7/17


T;!e-3.0

%otal Requirement of Equipment for %hermal )E) Coal Lignite -as/L.-Based Units of 11thlan and 1!thlan Capa"it# $ddition rogramme

I%em

T"%! Re*reme$%/"r C"!8 L*+$*%e

?&e P!$%&

T"%!Re*reme$%

/"rG&8LNG

?&e P!$%& T"%!

GT 0&) %< 0

ICT 0 0

M*&' Ser=*'e Tr$& 2M7A )2 )2

A>. Tr$&/"rmer 0%% 0%%

33:7 S#*%'h+er 10

3.3 :7 ?re:er )0) )0)

HT M"%"r& 21&< 11= 211)1

LT M"%"r& 21& 6!78I6!'!#T 9: !!CT6IC$ !78I'!#T


10/17


f. 0a1e *rap 2 nos. per bay 3" 8 484

N"%e 1 &e% 3 &*$+!e h&e $*%&

3.1.2 H,r" P"#er P!$%&( *$'!*$+ *%'h,r e*me$%)

:or hydro plants, requirement of equipment has been assessed corresponding to a

capacity addition of 1=,1)> '( during 11thlan and a capacity addition of about %&,&&&

'( during 12thlan. ince each hydro ;plant is site specificB there is no set rule or

norms for estimation.

The broad basis followed in the estimation of the other components of hydro

pro*ects for 11th5 12thlan is as under.

*) G%e& H"*&%& The number of radial gates roughly varies between % 5 1.

=**) S%%*' E>'*%%*"$ S,&%em 9ne set of !"citation !quipment with accessories isconsidered for each enerating 8nit.

=***) D,$m*' ?r:*$+ E*me$% -ynamic braking equipment is generallyprovided with large hydro generating units with high speed machines. The

number has been estimated accordingly.

*>) U$*% C"$%r"! ?"r (UC?) 9ne set of 8CA is considered with each generatingunit.

3.1& 6!78I6!'!#T 9: !!CT6IC$ !78I'!#T


11/17


>) I&"!%e Ph&e ?& D'% $ %erm*$! 8 %-"// "/ e*me$%& The length ofIA- depends on layout of power house and varies from scheme to scheme. The

estimation is based on e"perience.

>*) 11:7813.B:7824:7 CT& #umber of CTDs depends on protection and metering

scheme of particular plant, however, for estimation purposes 1& to 1> CTED perphase per unit has been considered depending on unit si+e.

>**) Ne%r! Gr"$*$+ C;*'!e 9ne set of #eutral grounding cubicle is consideredfor each generating unit.

>***) 132:7822:784:7 Ge$er%"r Tr$&/"rmer& The '@$ eneratortransformer rating is normally taken as 11&F of generator rating, the same has

been considered in estimation.

>*=) U$*% $ L*$e Pr"%e'%*"$ P$e!& 9ne set of protection panels are considered

each for enerating 8nits, Aus;bar, outgoing feeder, !@ cable / bus;duct,6eactors etc.

>=) C"m%er*e C"$%r"! S,&%em (CCS) 9ne set of CC equipment has beenconsidered for each hydro station.

>=*) A*r I$&!%e S#*%'h+er $ G& I$&!%e S#*%'h+er I has beenconsidered for under;ground 22&k@ / =**) EOT Cr$e& The total installed tonnage capacity of !9T cranes is based on

broad estimation of stator and rotor weights, though these weights may varydrastically even for machines of similar rating.

>=***) EH7 LPE ';!e& EH7 ?& D'% The cable requirement depends on layoutof power house and varies from scheme to scheme. The estimation is based on

e"perience.

>*>) U$*% A>*!*r, $ S%%*"$ Ser=*'e Tr$&/"rmer& The total capacity of unitand station au"iliary transformers has been considered as 1.2F of installed

capacity.

>>) 11:7 S#*%'h+er ?"rG The 11k@ switchgear boards vary from station tostation depending on 11k@ scheme. owever for estimation purposes two T

boards per unit has been considered.

>>*) P"#er $ C"$%r"! C;!e& There is no set rule for estimating power andcontrol cable lengths as it depends on layout and control philosophy. The

estimation is based on e"perience.

>>**) 1178227 DC S,&%em (?%%er*e& Chr+er $ DCD?) The battery capacityvaries between >***) Gr"$*$+ S,&%emG The total tonnage of grounding material vary from station tostation depending on layout of power plant, fault level, soil resistivity etc.

3.11 6!78I6!'!#T 9: !!CT6IC$ !78I'!#T


12/17


>>*=) DG Se%&G The '@$ capacity on - sets for ! plants vary between 0&&H@$ to2&&&H@$ depending on requirements worked out during detailed engineering.

>>=) I!!m*$%*"$ S,&%em F*re Pr"%e'%*"$ S,&%em Ser=*'e W%er S,&%em O*!H$!*$+ $ Pr*/*'%*"$ S,&%em 7e$%*!%*"$ S,&%em A*r C"$*%*"$*$+

S,&%em L*/%& C"mm$*'%*"$ S,&%em $ M*&'e!!$e"& *%em& !*:e 7*e"Cmer S*!% M"$*%"r*$+ S,&%em GPS S,&%em Se'*! C;!e& !*:e OPGWe%'.G These systems are provided in power plant as per requirement.

-etails of the various equipments are as followsG

3.12 6!78I6!'!#T 9: !!CT6IC$ !78I'!#T


13/17


%a&le'()8

%otal Requirement of Equipment for 3#dro ro4e"ts

of 11th lan and 1!th lan Capa"it# $ddition rogramme

3.1% 6!78I6!'!#T 9: !!CT6IC$ !78I'!#T

N". E*me$% 11%hP!$(11B< MW)

12%hP!$(3 MW)

T"%!

ydro;'echanical

1. ates 5 oist 3sets4

3i4 6adial spillway ates 276 482 =0=

3ii4 @ertical ift ates 403 704 11&=

2 Autterfly @alve 3ets4 31 54 )0

% 'ain Inlet @alve 3ets4 115 200 %10

!lectro;'echanical

< Turbine 3'(4 17189 30000

0 Turbine 3#o.4 1>> %0& 0

-igital overnors 3#os.4 1>> %0& 0

= yn. enerator 3'@$4 18908 32999 01,>&=

) yn. enerator3#o.4 1>> %0& 0

> 8nit Control Aoard 3sets4 1>> %0& 0

1& 'otor 5 'otor Control Centres

38nits4 1366 2384 %,=0&

11 Transformers 38$T 5 T4

3'@$4 228 398 2=

12 tatic !"citation ystem 3ets4 1>> %0& 0

1% -ynamic Araking Isolators 3ets4 60 105 10

1< # cubicle incl.

Transformer 3et4 1>> %0& 0

10 11/1%.) k@/2> %0& 01) 1%2k@/22&k@/


14/17


3.2 REQUIREMENT OF ELECTRICAL EQUIPMENTS FOR POWERSYSTEM

The requirement of electrical requirement for power system has been estimated

based on the transmission e"pansion plans corresponding to tentative capacity addition

during the 11thlan. In case of 12 thlan, the transmission e"pansion has been assumed tobe same as for the 11thlan.

The transmission e"pansion plans include the circuit length of transmission lines

at respective voltage levels and details of substation requirement for the entire

transmission system. Aased on the number of substations and the voltage levels at each

substation, the total number of bays at each voltage level has been estimated as shown

below in the table %.>.

%a&le ()5

%otal .um&er of Ba#s at ea"h oltage Le7el

S.N".

7"!%+eLe=e!

N". "/ ?,&T"%!

11%hP!$ 12%hP!$1. =0 k@ 2 2 12%

% nos. per 2

bays111 111

I&"!%"r

< isolators

per bay2

CT2 sets per/

bay12< 12< 110>< 2%1))

2. Isolator %=

specification details chapter-3

Documents