southern regional load despatch centre, bangalore

29
1 SOUTHERN REGIONAL LOAD DESPATCH CENTRE, BANGALORE POWER GRID CORPORATION OF INDIA LIMITED ENERGY CONSERVATION IN SR - A CASE STUDY V.K.AGRAWAL K.RAMAKRISHNA P.BHASKARA RAO V.BALAJI AGM DGM DGM CM

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SOUTHERN REGIONAL LOAD DESPATCH CENTRE, BANGALORE. POWER GRID CORPORATION OF INDIA LIMITED. ENERGY CONSERVATION IN SR - A CASE STUDY. V.K.AGRAWAL K.RAMAKRISHNA P.BHASKARA RAO V.BALAJI - PowerPoint PPT Presentation

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1

SOUTHERN REGIONAL LOAD DESPATCH CENTRE, BANGALORE

POWER GRID CORPORATION OF INDIA LIMITED

ENERGY CONSERVATION IN SR - A CASE STUDY

V.K.AGRAWAL K.RAMAKRISHNA P.BHASKARA RAO V.BALAJI

AGM DGM DGM CM

2

PRESENTATION OVERVIEW

SOUTHERN REGIONAL GRID – AN OVERVIEW

TYPICAL ISSUES IN THE PAST

PRESENT CONDITIONS & CARDINAL EVENTS

TRANSMISSION NETWORK AND LOSS ANALYSIS

ACTION PLAN FOR LOSS REDUCTION

METERING AND ACCOUNTING PHILOSOPHY …

3

THANK YOU

4

SOUTHERN REGIONAL GRID

AN OVERVIEW

5

SOUTHERN REGION

WESTERNREGION

EASTERN REGION

NORTHERN REGION

NORTH-EASTERN REGION

INSTALLED CAPACITY

NORTHERN :- 31,307 MW

EASTERN :- 16,140 MW

SOUTHERN :- 32,779 MW

WESTERN :- 32,761 MW

NORTH-EASTERN :- 2,357 MW

TOTAL 115,344 MW

REGIONAL GRIDS

6

SOUTHERN REGION

WESTERNREGION

EASTERN REGION

NORTHERN REGION

NORTH-EASTERN REGION

‘ ELECTRICAL’

REGIONS1

2

3

SAME FREQUENCY FROM GUJARAT TO ARUNACHAL PRADESH WITH EFFECT FROM MARCH 2003

ABOUT 2800 KMS! APART

7

SOUTHERN REGION

WESTERNREGION

EASTERN REGION

NORTHERN REGION

NORTH-EASTERN REGION

‘ELECTRICAL’

REGIONS

1

2

WITH THE COMMISSIONING OF THE TALA PROJECT CONNECTING THE EASTERN AND NORTHERN GRIDS, INDIA WILL HAVE ONLY TWO GRIDS

8

SOUTHERN REGION – GEOGRAPHY

ANDHRA PRADESH

TAMIL NADU

KARNATAKA

KE

RA

LA

POPULATION :- 22.5 CRORES ( 22% OF INDIA)

AREA :- 651 (‘000 SQ KM)(19% OF INDIA)

INSTALLED CAPACITY:- 32,779 MW(28.2%)

WEATHER :- South-west monsoon

North-east monsoon

SEA COAST :- AROUND 4000 KM

9

ANDHRA PRADESH

POPULATION :- 7.6 CRORES

AREA :- 275 (‘000 SQ KM)

NO OF CONSUMERS :- 162 LAKHS

PER CAPITA CONS. :- 719 UNITS

MAIN AGRICULTURE CROP :- RICE

CLIMATIC CONDITION :- HOT AND HOT & HUMID

SR STATES – GEOGRAPHYKARNATAKA

POPULATION :- 5.3 CRORES

AREA :- 192 (‘000 SQ KM)

NO OF CONSUMERS :- 105 LAKHS

PER CAPITA CONS. :- 642 UNITS

MAIN AGRICULTURE CROP :- COFFEE & RAGI

CLIMATIC CONDITION :- HOT AND HOT & HUMID

KERALA

POPULATION :- 3.2 CRORES

AREA :- 39 (‘000 SQ KM)

NO OF CONSUMERS :- 61 LAKHS

PER CAPITA CONS. :- 386 UNITS

MAIN AGRICULTURE CROP :- COCONUT & SPICES

CLIMATIC CONDITION :- HUMID

TAMIL NADU

POPULATION :- 6.2 CRORES

AREA :- 130 (‘000 SQ KM)

NO OF CONSUMERS :- 152 LAKHS

PER CAPITA CONS. :- 866 UNITS

MAIN AGRICULTURE CROP :- SUGAR CANE & OIL SEEDS

CLIMATIC CONDITION :- HOT AND HOT & HUMID

10

INSTALLED CAPACITY IN SR

The above capacity does not includes

--- About 1344 MW of Wind Mill Capacity in Tamil Nadu.

--- Micro and Captive plants in different states.

AGENCY HYDRO THERMAL GAS/DIESEL WIND/OTHERS NUCLEAR TOTAL

ANDHRA PRADESH 3586 2963 272 2 --- 6823

KARNATAKA 3332 1470 128 5 --- 4934

KERALA 1831 --- 234 2 --- 2067

TAMILNADU 1987 2970 423 19 --- 5399

PONDICHERRY --- --- 33 --- --- 33

CENTRAL SECTOR --- 8090 360 --- 830 9280

IPP 278 387 2506 1071 --- 4243

TOTAL 11014 (34%) 15880 (48%) 3956 (12%) 1099 (3%) 830 (3%) 32779 (100%)

11

15880 (48%)

11014 (34%)677 (2%)

830 (3%)422 (1.3%)

3956 (12%)

HYDRO THERMAL GAS WIND NUCLEAR OTHERS

SOURCE-WISE INSTALLED CAPACITY OF SR IN MW

32,779 MW

HYDRO

THERMAL

WINDNUCLEAR OTHERS

GAS

GENERATING UNITS IN SOUTHERN REGION

A.PKAR

TNKERGENERATORS ABOVE 1000 MW

GENERATORS 500 – 1000 MW

GENERATORS BELOW 500 MW

TYPICAL

GENERATOR

SPREAD

IN SR

UNIT CAPACITY AP KAR KER TN CGS TOTAL

THERMAL (500 MW) 2 8 10

THERMAL

(200-250 MW)10 7 13 15 45

GAS/THERMAL

(100-150 MW)9 2 3 10 24

HYDRO

(>50 MW)27 29 16 15 87

TOTAL 48 38 19 38 165

- HYDRO

- THERMAL

- GAS / NAPTHA

- NUCLEAR

13

LOAD 500-1500 MW

LOAD 200-500 MW

TYPICAL

LOAD

SPREAD

IN SR

KHAMMAM

VIJAYAWADANAGARJUNASAGAR

GAZUWAKA

HYDERABAD

RAICHUR

GOOTY

HOODY

SALEM

UDUMALPET

TRICHUR

MADURAI

TRICHY

MADRAS

NEYVELI

CUDDAPAH

DAVANAGERE

RAMAGUNDAM

BANGALORE

MUNIRABAD

PP

P

P

P

P

P

P

P

P

P

PP

P

P

KOLAR

63

HOSUR

1

60

P

NELLORE

NELAMANGALA

KURNOOL

KALPAKKA

SIMHADRI

HIRIYUR

TALAGUPPA

MAMIDIPALLY

SRI SAILAM

-- OF NTPC

-- OF ANDHRA PRADESH

-- OF KARNATAKA

-- OF NLC

-- OF POWERGRID

400KV SUB-STATIONS IN SR

NEYVELI TPS I (EXP)

  POWERGRID STATE OTHERS TOTAL

AP 8 4 2 14

KAR 4 5   9

KER 2     2

TN 6   2 8

TOTAL 20 9 4 33

TRIVENDRUM

15

TRANSMISSION IN SOUTHERN INDIA

ABOUT 2800 CKM OF 400 KV LINES ADDED IN THE PAST 2 YEARS

VOLTAGE LEVEL AP KAR KER TN CGS TOTAL

400 KV 2042 1614     9850 13506

220/230 KV 10050 7590 2650 6270 366 26926

132/110 KV 12360 6060 3720 10220   32360

TOTAL 24452 15264 6370 16490 10216 71404

16

MONSOONS

SOUTH WEST MONSOON NORTH EAST

MONSOON

17

11000

13000

15000

17000

19000

21000

23000

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

HOUR ---->

DE

MA

ND

IN

MW

--->

TYPICAL LOAD CURVE OF SR

WINTER

MONSOON

SUMMER

EVENING PEAK

WEATHERRESERVOIR CONSUMPTION

18

TYPICAL ISSUES IN THE PAST

19

GRID OPERATION – TYPICAL ISSUES IN PAST

• LOW / HIGH FREQUENCY PROBLEMS

– FREQUENCY EXCURSES TO LOW/HIGH VALUES

• LOW / HIGH VOLTAGE OPERATION

– CRITICALLY LOW VOLTAGES AT LOAD CENTRES

– SUBSTANTIALLY HIGH VOLTAGES AT FAR ENDS

• SYSTEM BROWNOUTS / BLACK OUTS

– SEPERATION OF SYSTEMS / LOSS OF LOAD

• ECONOMIC IN-STABILITY / INCREASED ELECTRICAL LOSSES– UNRELIABLE / INEFFICIENT OPERATION OF EQUIPMENT

20

GRID OPERATION:GRID OPERATION: A TIGHT ROPE WALK A TIGHT ROPE WALK

BLACK-OUTVOLTAGE

COLLAPSE IN-ECONOMIC

OPERATION

INSTABILITYPOWER

SWINGSINCREASED

LOSSES

21

PRESENT CONDITIONS&

CARDINAL EVENTS

22

47.00

47.50

48.00

48.50

49.00

49.50

50.00

50.50

51.00

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95

% OF TIME --->

FR

EQ

IN H

Z -

-->

2004-05

2003-04

 

<49.049.0 & <50.5

50.5 & Above

Max Min Avg FVI

 

2004-05 0.13 98.70 0.17 50.90 48.62 49.85 0.83

2003-04 2.30 97.30 0.44 51.17 48.18 49.69 1.95

2002-03 49.48 48.51 2.01 51.37 47.69 48.95 18.86

2002-03

FREQUENCY DURATION CURVE 2002-03, 2003-04 & 2004-05

FVI

23

YEAR

FREQUENCY (Hz) % OF TIME WHEN FREQUECY WAS BETWEEN

AVERAGFVIMAXIMUM

MINIMUM

AVERAGE< 48.5

HZ

48.5 TO 49.0 HZ

49.0 TO 49.5 HZ

49.5 TO 50.0 HZ

50.0 TO 50.5 HZ

> 50.5 HZ

00 – 01 51.56 47.76 48.67 53.79 17.68 13.63 12.26 2.64 ---

01 – 02 51.44 47.72 48.52 68.08 9.96 6.48 11.39 4.10 29.71

02 – 03 51.37 47.69 48.95 39.31 10.17 14.48 23.93 10.10 2.01 18.86

03 – 04 51.17 48.18 49.69 0.10 2.20 22.03 63.00 12.23 0.44 1.95

04 - 05 50.90 48.62 49.85 0.00 0.13 8.49 63.81 27.40 0.17 0.83

FREQUENCY SPECTRUM OF SOUTHERN REGION FOR PAST FIVE YEARS

24

COMPARISION OF BANGALORE VOLTAGE ON TYPICAL DAYS IN LAST FOUR YEARS

300

320

340

360

380

400

420

0:0

1

1:0

1

2:0

1

3:0

1

4:0

1

5:0

1

6:0

1

7:0

1

8:0

1

9:0

1

10

:01

11

:01

12

:01

13

:01

14

:01

15

:01

16

:01

17

:01

18

:01

19

:01

20

:01

21

:01

22

:01

23

:01

TIME IN HRS --->

VO

LT

AG

E IN

KV

---

>

2005

2002

2004

2003

25

DEEP VALLEY

DEEP VALLEY

SHARP

PEAK

26

0

1

2

3

4

5

6

7

8

9

10N

UM

BE

R O

F D

IST

UR

BA

NC

ES

---

----

->

1994

-95

1995

-96

1996

-97

1997

-98

1998

-99

1999

-00

2000

-01

2001

-02

2002

-03

2003

-04

2004

-05

YEAR ->

MAJOR MINOR

NO DISTURBANCES DESPITE LOSING ENTIRE SUPER GENERATING PLANTS LIKE

RAMAGUNDAM,VIJAYAWADA,KOTHAGUDEM, NORTH CHENNAI, SHARAVATHY ,NAGJHARI ETC

MAJOR AND MINOR DISTURBANCES IN SR SINCE 1994

27

GRID PRESENT STATUS -- CARDINAL EVENTS

• AVAILABILITY BASED TARIFF

• UNIFIED LOAD DESPATCH SCHEME

• GENERATION CAPCITY ADDITION

• INTERREGIONAL AC / HVDC LINKS

• OPERATIONAL EXCELLENCE

28

FREQUENCY CURVE FOR 9th SEPTEMBER 2004FVI = 0.04

Avg Freq = 49.99Hz

48.5

49.0

49.5

50.0

50.5

51.0

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

10 * ∑ (F – 50) 2

FVI = -------------------------------

24 * 60

29

RESERVOIR LEVEL - COMPARISON

LEVEL IN MTS

LEVEL31-Jul-04

LEVEL31-Jul-05

JALAPUT 831.58 819.24

LINGANMAKKI 544.22 548.85

SUPA528.01 542.40

IDUKKI717.66 720.08

KAKKI 963.83 968.88

NILGIRIS

TOTAL

ENERGY31-Jul-04

ENERGY31-Jul-05

RISE IN MU % RISE

275 47 - 228 - 82

1931 2930 999 51

749 1482 733 98

1066 1216 150 14

416 555 139 33

1110 1319 209 19

5546 7549 2003 36