NPCC Presentation

8/19/2019 NPCC Presentation

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National Power Control Centre, Islamabad

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Presentation Sequence

Introduction to NPCC

System Operation, Control and Planning

Load Management

Dispatch acilities at NPCC

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Introduction

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IN!"OD#C!ION !O NPCC

National Power Control Center $NPCC% is part o&National !ransmission and Despatch Company $N!DC%

which is a corporate entity unbundled &rom '(PD(

power wing

N!DC constructs, operates, maintains )**+* -.lines+grid stations, purchases power &rom generators

and sells it to DISCOs

DISCOs construct, operate, maintain /0+11 -. lines 2

grid stations and //+*34 -. distribution system

NPCC is control center o& N!DC and is responsible &or

operation o& generation and transmission system

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M(5O" #NC!IONS O NPCC

/3 !o Maintain balance between Supply 2 Demand 3

3 !o control Frequency and Voltage3

03 Operational Control o& Power Networ-3

43 !o Maintain Security 2 Stability o& networ-3

)3 Estimation o& Month6wise (nnual 7nergy3

13 Economic Dispatch.


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83 !o Schedule maintenance SHUT-DO!S on power6plants 2 !ransmission networ- elements3

93 Short to medium term Operational "lanning 3

#. $d%ance !oti&ications to thermal plants &or &uel

arrangement3

/*3 Collection o& System Data and preparation o& 'eports

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M(5O" #NC!IONS O NPCC


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N!DC$NPCC Control%

!:7"M(L

N#CL7("

;7SC

:


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National Power Control Centre

NPCC is responsible for Controlling and Monitoring of

electrical power generation of plants and 5!22 "# Power

Networ" of t$e countr% e&cluding 'arac$i(

Power Plants= 80

)** -. >rid Stations= /1

* -. >rid Stations= )0

/0 -. >rid Stations= 8)0

)


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System Operation :ierarchy

•*eneration Control•+witc$ing , -perating Control

of 5 , 22 "# Networ"

+witc$ing , -peration of 132 , 66

"# +out$ern Networ"

.CC+

/.egional Control

Centre +out$0

as$oro

+witc$ing , -peration of 132 , 66

"# Nort$ern Networ"

.CCN

/.egional Control

Centre Nort$0

Islaabad

NCC/National Control Centre0

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Organi?ation Chart

General Manager(SO)

Chief Engineer

(Op’n Planning)

Manager

PPC

Chief Engineer

(Network Op’n)

Manager

Power Control

Manager

RCC-N

Director

LDP

Manager

RCC-S

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+%ste -peration Control

and Planning

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>eneration Despatch

*eneration is despatc$ed fro power plants to end

consuers t$roug$ 5!22!132 "# ransission Networ"(

Installed capacit% ,980 M'

erated capacit% *,9/ M'(

Ma&iu espatc$ /1,911 M' /6ul%2150

+ources %del *as Nuclear 9-

+ :ind Coal ;agasse +olar

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>eneration Sources

1@*

@@80

)@@9

Installed Capacity $,980 M'%

'(PD( :7NCOAs

1@*

@/8

4809

Derated Capacity $*,9/ M'%

'(PD( :7NCOAs


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5

1

15

2

25

7)78313

621

1153 11) 94 )4 /** /)*

22873

uel 'ise Installed Capacity

uel !ype

Capacity $M'%


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5

1

15

2

25

7)7 7283

536

171 616 72 254 1 3

2812

Derated Capacity uel 'ise

uel !ype

Capacity $M'%


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:? IPP+ *>NC-@s -


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>eneration Planning 2 Despatch

Procedure and steps

>eneration orecasting+7stimation

on dail% wee"l% ont$l% Auarterl% %earl% basis

"eeping in Biew

Irrigation indents of %del stations +c$edule outages 9orced outagesConstraints if an%

Demand orecasting+7stimation;ased on $istorical trends

Despatch O& (ailable >eneration


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>conoic Merit -rder

Merit order of $eral Plants is deterined on t$e basis of fuel

efficiencies(

Plants are dispatc$ed in t$is order "eeping in Biew t$e tec$nicalconstraints if an%( 9or e&aple

Voltage problem

Operating limits of GENCOs/IPPs

Transmission/Transformation Limitations.

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!ransmission Operation 2 Control

-perational obectiBes of NPCC are

'eeping balance between deand and suppl% all

t$e tie

Maintaining stable freAuenc%

Maintaining s%ste securit% and reliabilit%

'eeping stable Boltages oBer priar% networ"Monitoring of transission , transforer

paraeters

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S'I!C:IN> OP7"(!IONS

NPCC perfors +witc$ing -peration on ransission Networ"

in following scenarios

Planned s$utdowns for aintenance cleaning and was$ing

actiBities

>ergent s$utdowns in case of abnoral situations(

ransission lines and transforers tripping(

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?oad Manageent

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>eneration+Demand alancing

System

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>eneration+Demand alancing

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Load Management

NPCC $as to aintain t$e balance between deand

and generation all t$e tie(

?oad Manageent is carried out to aintain balance

between generation and deand ot$erwise s%ste a%

undergo aor disturbance leading to a partial or total

collapse(

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LO(D M(N(>7M7N! !


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Scheduled Load Management

Scheduled Load Management

Carried out b% I+C-Ds "eeping in Biew t$e following factors(

Load Demand of respective DICO.

Generation !are allocated to DICO b" NPCC.

Constraints li#e voltage drop$ loading position of Transmission Lines

and of Transformers $ incl%ding && #V ' belo( voltage level$ s"stem.

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System Security Load Management

System Security Load Management $orced LS%

Carried out b% NPC b" opening &)*#V Transmission (ines

in case of e+treme s"stem emergencies.

>&aples of e&tree eergencies&. ,n-foreseen generating %nit O%tages.

*. br%pt c!ange in Irrigation Indents.

). Non implementation of c!ed%le Load anagement b"

DICOs

0. 1%pt%ring of Gas Pipe Lines.

2. Non availabilit" of 3%el.4. abotage activities on Transmission Lines.

5. Transmission/Transformer problems

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I>+C- $e districts

of .awalpindi C$a"wal +C- $e districts of 9aisalabad

+argod$a Mianwali '$us$ab $ang

;$a""er ( +ing$

M>PC- $e area

fro +a$iwal to +adiAabad;a$awalnager to ;a$awalpur ounsa +$ari

f to .aanpur

>+C- +C-


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espatc$ 9acilities aBailable at

NPCC

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Outline o& Despatch acilities

+uperBisor% Control and ata


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.I7' O N(!ION(L CON!"OL C7N!"7 $NCC%


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Documents

NPCC Presentation