SOUTHERN REGIONAL LOAD DESPATCH CENTRE
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1SOUTHERN REGIONAL LOAD DESPATCH CENTRE
POWER GRID CORPORATION OF INDIA LIMITED
Presentation to the Engineers of KPCL
on
4th August, 2005
2
PRESENTATION OVERVIEW
REGIONAL GRIDS – QUICK FACTS
SOUTHERN REGIONAL GRID – OVERVIEW
GRID OPERATION – TYPICAL ISSUES IN PAST
PRESENT GRID STATUS – CARDINAL EVENTS
ABT IMPLEMENTATION – KARNATAKA SYSTEM
ABT – UI POOL IN SR GRID
3
THANK YOU
4
REGIONAL GRIDS
QUICK FACTS
5
SOUTHERN REGION
WESTERNREGION
EASTERN REGION
NORTHERN REGION
NORTH-EASTERN REGION
INSTALLED CAPACITY
NORTHERN :- 31,230 MW
EASTERN :- 17,697 MW
SOUTHERN :- 32,704 MW
WESTERN :- 32,354 MW
NORTH-EASTERN :- 2,357 MW
TOTAL 116,142 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
Growth of Installed Growth of Installed Capacity for Electricity in Capacity for Electricity in
IndiaIndia
0
20000
40000
60000
80000
100000
120000
1990
-91
1991
-92
1992
-93
1993
-94
1994
-95
1995
-96
1996
-97
1997
-98
1998
-99
1999
-00
2000
-01
2001
-02
2002
-03
2003
-04
in MW
Inter Regional Links
700 MW700 MW
1200MW1200MW
2000MW2000MW
1200 MW1200 MW
900 MW900 MW30,500 MW
16,000
32,700 MW
30,500 MW
2300
1850 MW1850 MW
1650 MW1650 MW
Present IR Present IR Capacity = Capacity = 9,500 MW9,500 MW
10
Sourcewise Sourcewise composition of composition of
installed capacity in installed capacity in IndiaIndia
((1,16,142 in 2005)1,16,142 in 2005)2.40% 1.70% 26%
70%
HydroThermalNuclearWind
11
SOUTHERN REGIONAL GRID
OVERVIEW
12
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:- 31,931 MW(27.6%)
WEATHER :- South-west monsoon
North-east monsoon
SEA COAST :- AROUND 4000 KM
13
SR STATES – POWER SYSTEM STATISTICSANDHRA PRADESH
INSTALLED CAPACITY – 9486 MW
MAX DEMAND MET – 7547 MW
DAILY CONSUMPTION MAX – 166 MU
DAILY CONSUMPTION AVG – 142 MU
CONSUMER PROFILE –
INDS -27%, DOM-22%, COMM-5%, IRRI-39% & OTHERS-7%
KARNATAKA
INSTALLED CAPACITY – 6067 MW
MAX DEMAND MET – 5445 MW
DAILY CONSUMPTION MAX – 112 MU
DAILY CONSUMPTION AVG – 90 MU
CONSUMER PROFILE –
INDS -26%, DOM-19%, COMM-7%, IRRI-39% & OTHERS-9%
KERALA
INSTALLED CAPACITY – 2617 MW
MAX DEMAND MET – 2426 MW
DAILY CONSUMPTION MAX – 39 MU
DAILY CONSUMPTION AVG – 34 MU
CONSUMER PROFILE –
INDS -34%, DOM-44%, COMM-13%, IRRI-2%& OTHERS-7%
TAMIL NADU
INSTALLED CAPACITY – 7178 MW
MAX DEMAND MET – 7708 MW
DAILY CONSUMPTION MAX – 159 MU
DAILY CONSUMPTION AVG – 131 MU
CONSUMER PROFILE –
INDS -39%, DOM-25%, COMM-7%, IRRI-24% & OTHERS-5%
14
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
15
GROWTH OF INSTALLED CAPACITY OF SR
1947
5
1983
0
2030
4
2129
8
2213
3
2298
3
2417
3 2616
3 2850
1
2952
6
10000
12000
14000
16000
18000
20000
22000
24000
26000
28000
30000
1994-95 1995-96 1996-97 1997-98 1998-99 1999-00 2000-01 2001-02 2002-03 2003-04
YEARS --->
IN MW
16
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 THERMALGAS/
DIESELWIND/
OTHERS NUCLEAR TOTAL
AP 3586 2963 272 2 --- 6823
KAR 3277 1470 128 5 --- 4879
KER 1811 --- 235 2 --- 2047
TN 1987 2970 423 19 --- 5400
PONDI --- --- 33 --- --- 33
C. S. --- 8090 360 --- 830 9280
IPP 278 387 2506 1071 --- 4243
TOTAL10939 (33%)
15880 (49%)
3956 (12%) 1099 (3%) 830 (3%) 32704
17
SOURCE-WISE EFFECTIVE GENERATING CAPACITY OF SOUTHERN REGION
AS ON 31-MAR-05
HY DRO
33%
THERMAL
49%
GAS/NAPTHA/DIESEL
12%
NUCLEAR
3%
WIND
3%
SOURCE IN MW IN %HYDRO 10939 33
THERMAL 15910 49GAS/NAPTHA/DIESEL 3956 12
NUCLEAR 830 3WIND 1099 3TOTAL 32734 100
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 28 16 15 85
TOTAL 48 36 19 38 163
- HYDRO
- THERMAL
- GAS / NAPTHA
- NUCLEAR
19
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 19 9 4 33
TRIVENDRUM
21
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
KHAMMAM
VIJAYAWADANAGARJUNASAGAR
VISAKHAPATNAM
(POWERGRID)HYDERABAD
RAICHUR
GOOTY
HOODY
SALEM
UDUMALPET
TRICHUR
MADURAI
TRICHY
MADRAS
NEYVELI
CUDDAPAHDAVANAGERE
KAIGA
115
317
RSTPP
BHADRAVATI
130x216
4x2
182
151
181
173
302
308172
277
279
155
178x
2
PONDICHERY
BANGALORE
SIRSI
MUNIRABAD
PP
P
P
P
P
P
P
P
P
P
PP
P
P
N
KOLAR
PALLOM
KAYANKULAMEDAMON
TALCHER
JEYPORE
63
187
2x78
2x221
54
HOSUR
KADRA
KODASAALY
Nagjhari
1
120
60
MAPS
P
SSLMM
MMDP
THIRUVANATHAPURAM
ALMATHI
NELLORE
400 KV LINE PRESENTLY
OPERATED AT 220 KV
NELAMANGALA
KURNOOL
GAZUWAKA(AP)
SIMHADRI NTPC
HIRIYUR
189
195
267x
2
258
242
175
179
127
130x
2
221x2
146x252x2
197x2
301x2
8x4
15x2
300
28
330
ABOUT 12000 CKM 400KV TRANSMISSION
TALGUPPA
GRID MAP
GRID FOCAL POINT SHIFTED TO KOLAR AFTER COMMISSIONING OF HVDC
KOODANKULAM
THIRNELVALI
TYPICAL FLOWS ARE FROM NORTH TO SOUTH
QUANTUM CHANGES IN FLOW PATTERN LIKELY AFTER COMMISSIONING OF KOODANKULAM 2000 MW
23
13000
14000
15000
16000
17000
18000
19000
20000
21000
22000
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
TIME IN HRS --->
DE
MA
ND
IN
MW
---
>
MONSOON SUMMER WINTER
TYPICAL LOAD CURVE OF SR
WINTER
MONSOON
SUMMER
EVENING PEAK
WEATHER
RESERVOIR CONSUMPTION
24
GRID OPERATION
TYPICAL ISSUES IN THE PAST
25
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
26
GRID PRESENT STATUS
27
GRID OPERATION – PRESENT STATUS
STABILISED SYSTEM FREQUENCY
IMPROVED VOLTAGES
MERIT ORDER OPERATION
INTER REGIONAL EXCHANGES
IMPROVED GRID SECURITY
JAN - 02 JAN - 03 Vol
28
GRID PRESENT STATUS
CARDINAL EVENTS
29
GRID PRESENT STATUS -- CARDINAL EVENTS
• AVAILABILITY BASED TARIFF
• UNIFIED LOAD DESPATCH SCHEME
• GENERATION ADDITION
• INTERREGIONAL AC / HVDC LINKS
• OPERATIONAL EXCELLANCE
30
MONSOONS
SOUTH WEST MONSOON NORTH EAST
MONSOON
31
GRID OPERATION:GRID OPERATION: A TIGHT ROPE WALK A TIGHT ROPE WALK
BLACK-OUTVOLTAGE
COLLAPSE IN-ECONOMIC
OPERATION
INSTABILITYPOWER
SWINGSINCREASED
LOSSES
32
STABILISED SYSTEM FREQUENCY
• TYPICAL FREQUENCY CURVE
• SCATTER DIAGRAM
• HISTOGRAM OF FREQUENCY
• FREQUENCY DURATION CURVE
• Df/dT CURVE
• RECORD FVI OF 0.04
33
47.50
48.00
48.50
49.00
49.50
50.00
50.50
51.00
25 26 27 28 29 30 31
DAYS ----->
FR
EQ
UE
NC
Y IN
HZ
---
->FREQUENCY PROFILE
2002, 2003 & 2004
34
FREQUENCY DURATION CURVE AUG TO OCT 04, 03 & 02
47.50
48.00
48.50
49.00
49.50
50.00
50.50
51.00
1 1117 2233 3349 4465 5581 6697 7813 8929 10045 11161 12277 13393 14509 15625 16741 17857 18973 20089 21205
% OF TIME --->
FR
EQ
UE
NC
Y IN
HZ
---
>
0 10 20 30 40 50 60 70 80 90 100
2004
2003
<49.049.0 & <49.5
49.5 & <50.5
50.5 & Above
Max Min Avg FVI St. Dev
2004 0.03 1.46 98.28 0.23 50.82 48.62 49.95 0.31 0.12
2003 0.17 8.32 90.66 0.85 50.85 48.60 49.81 0.95 0.18
2002 73.62 12.45 12.84 1.09 51.08 47.69 48.63 23.59 0.44
2002
35
Voltage at Bangalore Jan 02 & 03
36
VARIABLE COST(Ps) OF POWER STATION IN SR AS ON JUNE 2004
0
2000
4000
6000
8000
10000
12000
14000
16000
18000P
ON
DY
PC
L (3
2.5
MW
)(19
.61
PS
)
NE
YV
ELI
-II S
TG
1 *
*(63
0 M
W)(
67.9
9 P
S)
KO
VIL
KA
LAP
PA
L *(
105
MW
)(68
PS
)
JEG
UR
UP
AD
U (
GA
S)(
216
MW
)(82
PS
)
SP
EC
TR
UM
(G
AS
)(20
8 M
W)(
83 P
S)
VIJ
JES
WA
RA
M -
I(10
0 M
W)(
84 P
S)
VIJ
JES
WA
RA
M -
II(17
2.5
MW
)(86
PS
)
B S
E S
(A
P)(
GA
S)(
140
MW
)(87
PS
)
RE
INS
CA
LCIN
ING
LT
D.(
41 M
W)(
90 P
S)
RA
MA
GU
ND
AM
(210
0 M
W)(
90 P
S)
LAN
CO
(350
MW
)(91
.48
PS
)
NE
YV
ELI
-II S
TG
-II *
*(84
0 M
W)(
94.6
1 P
S)
SIM
HA
DR
I(10
00 M
W)(
96 P
S)
RA
MA
GU
ND
AM
-B(6
2.5
MW
)(96
PS
)
VIJ
AY
AW
AD
A T
.P.S
.-1&
2(10
50 M
W)(
101
PS
)
VIJ
AY
AW
AD
A T
.P.S
.-3(
210
MW
)(10
1 P
S)
KO
TH
AG
UD
EM
(B)(
210
MW
)(10
8 P
S)
RA
ICH
UR
.T.P
S. *
*(12
60 M
W)(
110
PS
)
KO
TH
AG
UD
EM
(A)(
240
MW
)(11
0 P
S)
KO
TH
AG
UD
EM
(C)(
220
MW
)(12
3.1
PS
)
KO
TH
AG
UD
EM
(D)(
500
MW
)(12
4 P
S)
RA
YA
LAS
EE
MA
TP
P(4
20 M
W)(
126
PS
)
NO
RT
H M
AD
RA
S.T
.P.S
(630
MW
)(13
0.98
PS
)
TU
TU
CO
RIN
.T.P
.S(1
050
MW
)(13
3.5
PS
)
ME
TT
UR
.T.P
.S(8
40 M
W)(
150
PS
)
V S
P *
(120
MW
)(16
9.11
PS
)
ST
-CM
S(2
50 M
W)(
171
PS
)
NE
YV
ELI
-I(6
00 M
W)(
185.
86 P
S)
EN
NO
RE
.T.P
.S(4
50 M
W)(
190.
2 P
S)
L V
S(3
7.8
MW
)(20
0 P
S)
YE
LEH
AN
KA
DE
ISE
L(12
7.92
MW
)(20
3.36
PS
)
NA
VB
HA
RA
T(3
5 M
W)(
205
PS
)
BR
AH
MA
PU
AM
D P
P(1
06.5
MW
)(21
4 P
S)
NE
LLO
RE
(30
MW
)(22
5 P
S)
B S
E S
(K
ER
ALA
)(16
5.5
MW
)(22
5 P
S)
TH
AN
NE
ER
BA
VI(
235
MW
)(22
8 P
S)
JIN
DA
L(26
0 M
W)(
247
PS
)
BA
LAJI
(SA
MA
YA
NA
LLU
R)(
105
MW
)(24
7 P
S)
KO
ZH
IKO
DE
DP
P(1
28.8
MW
)(25
0 P
S)
GM
R V
AS
AV
I(19
6 M
W)(
254
PS
)
SA
MA
LPA
TT
Y IP
P(1
05 M
W)(
263
PS
)
TA
TA
DE
ISE
L(81
.3 M
W)(
280
PS
)
KA
YA
MK
ULA
M N
TP
C(3
50 M
W)(
290
PS
)
KA
SA
RG
OD
P C
L(2
1 M
W)(
300
PS
)
RA
YA
LAS
EE
MA
(37.
8 M
W)(
330
PS
)
PP
NA
LLU
R(3
30.5
MW
)(41
5 P
S)
BA
SIN
BR
IDG
E(1
20 M
W)(
468
PS
)
CU
MU
LA
TIV
E IN
ST
AL
LE
D C
AP
AC
ITY
IN M
W
0
50
100
150
200
250
300
350
400
450
VA
RIA
BL
E C
OS
T IN
Ps/
UN
IT
VARIABLE COST
CUMULATIVEINSTALLE
ABOUT 7000 MW OF CAPACITY IS BELOW 100 Ps
ABOUT14200 MW OF CAPACITY IS BELOW 200 Ps
ABOUT 16000 MW OF CAPACITY IS BELOW 300 Ps
CUM. INS. CAP.
37
49.72 HZ
38
MERIT ORDER : UNITS BOXED UP
POWER STATION STATE CAPACITY(MW) FUELVARIABLE
COST
TATA DIESELKARNATAK
A 79 DIESEL 308
RAYALSEEMA DGPP
KARNATAKA 27 DIESEL 360
YELEHANKA DIESEL
KARNATAKA 128 DIESEL 314
THANRBHAVIKARNATAK
A 220 NAPTHA 325
SUB-TOTAL 454
BRAHAMPURAM DPP KERALA 107 DIESEL 275
BSES KERALA 157 NAPTHA 308
KASARGODE PCL KERALA 22 NAPTHA 298
KAYAMKULAM KERALA 360 NAPTHA 322
SUB-TOTAL 646
BASIN BRIDGETAMIL NADU 120 NAPTHA 584
P.P.NALLURTAMIL NADU 330 NAPTHA 415
SUB-TOTAL 450
TOTAL 1550
39
DEEP VALLEY
DEEP VALLEY
SHARP
PEAK
40
KADAMPARAI PUMP OPERATION
-300
-200
-100
0
100
200
300
400
5000:
001:
002:
003:
004:
005:
006:
007:
008:
009:
0010
:00
11:0
012
:00
13:0
014
:00
15:0
016
:00
17:0
018
:00
19:0
020
:00
21:0
022
:00
23:0
00:
00
TIME ---->
IN M
W --
-->
48.50
49.00
49.50
50.00
50.50
51.00
FREQ
UENC
Y IN
HZ
---->
GENERATOR MODE
PUMP PUMP
SAVINGS OF RS 40 LAKHS EVERY DAY
INVESTMENT OF 1600 CRORES SAVED
41
OPPORTUNISTIC UI TRADEEXPORT TO WR ON 13/05/03-14/05/03
-300
-200
-100
0
100
200
300
400
500
600
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08
49
49.2
49.4
49.6
49.8
50
50.2
50.4
50.6
50.8
51POWER EXPORT TO WR ON
UI BASIS DURING LOAD CRASH
FREQ
42
SCHEDULE VS ACTUAL INJECTION GRAPH OF ER (AT ER PERIPHERY) FOR DATE : 31.08.03
0
100
200
300
400
500
600
700
800
900
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92
TIME AS BLOCK OF 15 MINUTE --->
MW
-->
49.0
49.5
50.0
50.5
51.0
51.5
52.0
52.5
53.0
53.5
54.0
54.5
55.0
FREQ
UEN
CY
(Hz)
-->
SCHEDULE ACTUAL INJECTION ENTITLEMENT
SR FREQ ER FREQ
Entitlement
Schedule
Actual Injection
OPERATION ON 31/08/03 (Ganesh Chathurthi)
AMOUNT SAVED FOR SR CONSTITUENTS = 107 LAKHS
50 NOS HVDC SETPOINT CHANGES DONE TO ACHIEVE THIS!!!!!
43
GENERATION vs FREQUENCY FOR
10
30
50
70
90
08
:21
09
:21
10
:21
11
:21
TIME IN HH:MM ----->
MW
---
-->
49.00
49.20
49.40
49.60
49.80
50.00
50.20
50.40
FR
EQ
IN
HZ
---
-->
FREE GOVERNOR MODE OF OPERATION ON 12-DEC-04
SHARAVATHI -1
FREQ DROP FROM 49.72 HZ TO 49.27 HZ
i.e. ~ 0.45HZ
44
GENERATION vs FREQUENCY FOR
10
30
50
70
90
08
:21
09
:21
10
:21
11
:21
TIME IN HH:MM ----->
MW
---
-->
49.00
49.20
49.40
49.60
49.80
50.00
50.20
50.40
FR
EQ
IN
HZ
---
-->
FREE GOVERNOR MODE OF OPERATION ON 12-DEC-04
SHARAVATHI -4
FREQ DROP FROM 49.72 HZ TO 49.27 HZ
i.e. ~ 0.45HZ
45
0
100
200
300
400
500
600
700
800
900
1000
0 2 4 6 8 10 12 14 16 18 20 22 0
HOURS ---->
GE
NE
RA
TIO
N IN
MW
---
>
48.80
49.00
49.20
49.40
49.60
49.80
50.00
50.20
50.40
FR
EQ
IN H
Z--
->
SHARAVATHI GENERATION – TYPICAL DAY
FREQ
MW
46
OPTIMAL RESERVOIR UTILISATIONSHARAVATHY IN KARNATAKA
THE COST OF GENERATION AT SHARAVATHY IS LESS THAN 20 Ps /UNIT
AVERAGE SELLING UI RATE OF KARNATAKA IS 372 Ps/UNIT
PLANT OPERATORS AT SHARAVATHY THINK OF THE RESERVOIR LEVEL IN RUPEES
RATHER THAN IN FEET!!!
Rs. Rs.
Rs.
Rs.
Rs.
Rs.Rs.
Rs.
Rs.
Rs.
Rs.
Rs.
Rs.
Rs.
Rs.Rs.
47
Growth Of Inter Regional Energy Exchanges
73508230
9730
13000
22500
0
5000
10000
15000
20000
25000
1999-2000 2000-2001 2001-2002 2002-2003 2003-2004
Year
To
tal M
U D
uri
ng
Th
e Y
ear
IR Energy Exchanges
48
MAJOR AND MINOR DISTURBANCES SINCE 1994
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 ETC
49RTU RTU RTU
SUB LDC SUB LDC SUB LDC
SLDC SLDC SLDC
ERLDC
WRLDC NRLDC SRLDC
NERLDC
NLDC
32 Nos.
51 Nos.
1160Nos.
Unified Grid OperationUnified Grid Operation
5 Nos.
NationalLevel
RegionalLevel
State HQLevel
Group / Distt Level
Plant / Sub-Station Level
50
RLDC,Bangalore
KalamasseryHyderabad BangaloreChennai
Cuddapah
Warangal
Vijayawada
Kalam’erry
Kannur
Trivandrum
Chennai
Erode
Madurai
Bangalore
Lingusugur
Hubli
CPCCSCC, Pondy
Hyderabad
Hierarchy of The ULDC Scheme in Southern Region
Andhra Kerala Tamilnadu Karnataka
NAME OF STATENO OF SLDC
NO OF SUB-LDC
NO OF RTU'S
ANDHRA PRADESH
1 4 101
KARNATAKA 1 3 64
KERALA 1 3 30
TAMIL NADU 1 3 87
CENTRAL SECTOR
--- --- 26
PONDY --- --- 14
TOTAL 4 13 322
51
Annual Inter-Regional Energy Transfer
≈10,000MU
Transformation Capacity ≈
45000 MVA
Transformers (220kV and above)
480 nos.
Installed Capacity≈31870 MW
Integrated Opn of Ten Power
Utilities
Dynamic Grid Conditions
Southern Region Grid Complexities in Monitoring & Control
Generators –Hydro, Thermal,Gas/IPP
422 nos.
Transmission Network 400/220kV
≈ 37500 Ckm
40,000 POINTS Active Power, Reactive Power,
Voltage, Frequency, Transformer Tap Position, Circuit Breaker Position,
Isolator Position etc.
52
GROWTH OF INSTALLED CAPACITY OF SR
1947
5
1983
0
2030
4
2129
8
2213
3
2298
3
2417
3 2616
3 2850
1
2952
6
10000
12000
14000
16000
18000
20000
22000
24000
26000
28000
30000
1994-95 1995-96 1996-97 1997-98 1998-99 1999-00 2000-01 2001-02 2002-03 2003-04
YEARS --->
IN MW
53
Kolar
Chintamani
Cudappah
HoodyHosur
Salem
Udumalpet
Madras B’lore
+/- 500 KV DC line 1370 KM
ElectrodeStation
ElectrodeStation
TALCHER
400kv System
220kv system
KOLAR
TALCHER KOLAR TALCHER KOLAR SCHEMATICSCHEMATIC
54
Inter Regional Links
Present IR CapacityPresent IR Capacity= 9,500 MW= 9,500 MW
700 MW700 MW
1200MW1200MW
2000MW2000MW
1200 MW1200 MW
900 MW900 MW30,500 MW
16,000
32,700 MW
30,500 MW
2300
1850 MW1850 MW
1650 MW1650 MW
55
13450 MW
1000 MW6450 MW
4600 MW
1300 MW3200 MW
30,000 MW OF INTER-REGIONAL POWER BY 2012
EASTERN REGION
SOUTHERN REGION
WESTERNREGION
NORTHERN REGION
NORTH-EASTERN REGION
INTER-REGIONAL TRANSFER BY INTER-REGIONAL TRANSFER BY END OF 11END OF 11thth PLAN (2012) PLAN (2012)
56
RESERVOIR LEVEL - COMPARISONRESERVOIR LEVEL - COMPARISON
LEVEL IN MTSLEVEL IN MTS
LEVELLEVEL31-Jul-0431-Jul-04
LEVELLEVEL31-Jul-0531-Jul-05
JALAPUTJALAPUT 831.58831.58 819.24819.24
LINGANMAKKILINGANMAKKI 544.22544.22 548.85548.85
SUPASUPA528.01528.01 542.40542.40
IDUKKIIDUKKI717.66717.66 720.08720.08
KAKKIKAKKI 963.83963.83 968.88968.88
NILGIRISNILGIRIS
TOTALTOTAL
ENERGYENERGY31-Jul-0431-Jul-04
ENERGYENERGY31-Jul-0531-Jul-05
RISE IN MURISE IN MU % RISE% RISE
275275 4747 - 228228 - 8282
19311931 29302930 999999 5151
749749 14821482 733733 9898
10661066 12161216 150150 1414
416416 555555 139139 3333
11101110 13191319 209209 1919
55465546 75497549 20032003 3636
57
320
330
340
350
360
370
380
390
400
410
42000
:05
01:0
5
02:0
5
03:0
5
04:0
5
05:0
5
06:0
5
07:0
5
08:0
5
09:0
5
10:0
5
11:0
5
12:0
5
13:0
5
14:0
5
15:0
5
16:0
5
17:0
5
18:0
5
19:0
5
20:0
5
21:0
5
22:0
5
23:0
5
TIME IN HRS --->
VO
LT
AG
E IN
KV
---
>
REALITY BITE:
FARMERS IN KARNATAKA ARE HAPPY WITH FEWER HOURS OF QUALITY POWER!!.
EFFICIENCY OF PUMPS AT TG HALLI WATER WORKS IMPROVED!
COMPARISION OF BANGALORE VOLTAGE-TYPICAL DAY
BETTER VOLTAGE PROFILE MEANS LESS ELECTRICAL LOSSES
58
WATER SUPPLY TO BANGALORE
LOW VOLTAGE PROBLEMS AROUND BANGALORE HAMPERED WATER SUPPLY EARLIER
WITH BETTER VOLTAGE NOW, PUMPING EFFICIENCY HAS IMPROVED
400 KV STATION AT MYSORE BEING COMMISSIONED ON WAR FOOTING TO FURTHER FORTIFY THIS PART OF THE GRID
PUMPING LOSSES REDUCED
ENORMOUS SAVINGS TO THE STATE
MOTOR BURNING AND MAINTENANCE COSTS ALSO CAME DOWN DRASTICALLY
59
VOLTAGE PROFILE IN SR GRID TYPICAL DAY IN OCTOBER 2004
360
370
380
390
400
410
420
430
440
RA
MA
GU
ND
AM
HY
DE
RA
BA
D
GA
ZU
WA
KA
NU
NN
A
N'S
AG
AR
KU
RN
OO
L
GO
OT
Y
NE
LLO
RE
CU
DD
AP
AH
BA
NG
ALO
RE
CH
EN
NA
I
NE
YV
ELI
VO
LT
AG
E L
EV
EL
02:00HRS
19:00HRS
60
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
61
INTER REGIONAL EXCHANGES
215
91
264
138
0
50
100
150
200
250
300
1 2
RA
TE
(P
AIS
A/U
NIT
)
FROM WR (608 MU) FROM ER (804 MU)
IMPORT BY SR
SR RATE WR RATE SR RATE ER RATE
62
INTER REGIONAL EXCHANGES
210
163
377 366
0
50
100
150
200
250
300
350
400
450
1 2
RA
TE
(P
AIS
A/U
NIT
)
TO WR (393 MU) TO ER (86 MU)
EXPORT BY SR
SR RATE WR RATE SR RATE ER RATE
63
INTER-REGIONAL EXCHANGES DETAILS UPTO 133 WKS (Till 17.07.05)
WR ER
Net Energy Transaction
275 MU
IMPORT BY SR
717 MU
IMPORT BY SR
Amount Due to
SR Constituents
Rs. 101.26 Cr. Rs. 38.33 Cr.
Amount Credited TO SR
Constituents
Rs. 101.26 Cr. Rs. 38.33 Cr.
64
AP KAR KER TN PONDY
Total UI exported(-) /
Imported(+) in MUs
-4432 4381 1083 1376 -155
Total amount paid in Crores
Rs.-866 831 163 396 -32
Average rate of UI in paise/unit 195 190 151 288 206
SUMMARY OF UI – 133 WKS(FROM 01/JAN/03 TO 17/JUL/05)
65
UI IN SR (FROM 01/01/03 TO 17/07/05)
• TOTAL UI TURNOVER :- 8893 MU
• TOTAL UI AMOUNT DISBURSED:- 1784 CR
• AVG WEEKLY TRANSACTION:- 67 MU
• AVG WEEKLY UI AMOUNT DISBURSED:- 13.5 CR
66
Back
ODUD & UI RATE OF CONSTITUENTS
190
251
205
308
154
407
179
373
0
50
100
150
200
250
300
350
400
450
AP KAR KER TN
RA
TE
(P
AIS
A/U
NIT
)
OVER DRAWAL (PURCHASED) UNDER DRAWAL (SOLD)
207 MU
4638MU
4387 MU
6MU
1315MU
232MU
1904 MU
528MU
67
Singrauli & Rihand
2555
2530
2491 25
05
2200
2300
2400
2500
2600
2700
Pre ABT(Dec 01-Nov 02) Post ABT(Dec 02-Nov 03)
Av
era
ge
MW
Declared Capability Injection Schedule
Unchahar-1 & 2
691
687
599
653
500
550
600
650
700
750
Pre ABT(Dec 01-Nov 02) Post ABT(Dec 02-Nov 03)
Ave
rag
e M
W
Declared Capability Injection Schedule
Dadri (T)
711
640
619
717
500
550
600
650
700
750
800
Pre ABT(Dec 01-Nov 02) Post ABT(Dec 02-Nov 03)
Ave
rag
e M
W
Declared Capability Injection schedule
Anta, Auraiya & Dadri
1478
1336
1330
1636
1100
1200
1300
1400
1500
1600
1700
1800
Pre ABT(Dec 01-Nov 02) Post ABT(Dec 02-Nov 03)
Ave
rag
e M
W
Declared Capabilty Injection Schedule
68
Schedules as percentage of Declared Capability (DC)
97.5%
86.7%
89.9% 90.4%
99.0%
95.0%
86.3%
81.3%
75.0%
80.0%
85.0%
90.0%
95.0%
100.0%
105.0%
Pithead Unchahar-I +II Dadri (T) Combined cycle ISGS
pre-ABT (Dec 01-Nov 02)
post-ABT (Dec 02-Nov 03)
69
UI TRANSACTION ON 31/08/03
HIGHLIGHTS OF UI TRANSACTION ON 31.08.03 (SUNDAY, GANESH CHATURTHI)
• UI imported from ER : 6.07 MU• UI imported from WR : 2.81 MU• Total UI imported from C. Grid by SR : 8.88 MU• Average UI rate of C.Grid : 93 Ps/Unit • Average UI rate in SR for C.Grid : 213 Ps/Unit • Max. Power transfer in UI from ER : 510 MW• Max. Power transfer in UI from WR : 350 MW• Total Max. Power transfer in UI from C.Grid : 860 MW• Amount saved for the SR constituents : 107 Lacs• Total Number of HVDC Operations : 50 no.s
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