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PETITION BY TNEB TO INVESTIGATE ANY GAMING BY THE GENERATORS
PETITION NO:- 90/2005
CERC HEARING ON 06-OCT-05
PRESENTATION OVERVIEW
CERC TARIFF ORDER – RELEVANT ABSTRACT
INSTALLED CAPACITY OF ISGS IN SR
UI SUMMARY
EXCESS GENERATION BY ISGS
STATEMENT OF DC,SCHEDULE AND ACTUAL GENERATION
DC, SCHEDULE AND ACTUAL DRAWAL GRAPHS
THANK YOU
CERC TARIFF ORDER- RELEVANT ABSTRACT
(i) “Any generation up to 105% of Declared Capacity in any time blockof 15 minutes and averaging up to 101% of the average DeclaredCapacity over a day shall not be construed as gaming, and generatorshall be entitled to UI charges for such excess generation above thescheduled generation (SG).
(ii) For any generation beyond the above prescribed limits, the Regional
Load Despatch Centre shall investigate so as to ensure that there isno gaming and if gaming is found by the Regional Load DespatchCentre, the corresponding UI charges due to the generating stationon account of such extra generation shall be reduced to zero and theamount shall be adjusted in UI account of beneficiaries, in the ratio oftheir capacity share in the generating station.”
Central Electricity Regulatory Commission (Terms and Conditions of Tariff) Regulations,2004,Dated 26th March 2004 of clause 24 of 2 is as follows:
SOUTHERN REGIONAL GRID
Inter State Generating Stations in the Region participating in the UI mechanisem:
• Ramagundam STPS 1-6 : 2100 MW (200x3 + 500x4)
• Ramagundam STPS 7 : 500 MW
• NLC TPS 2 / I : 630 MW (210 x 3)
• NLC TPS 2 / II : 840 MW (210 x 4)
• NLC TPS 1(EXP.) : 420 MW (210X2)
• TALCHER STAGE II : 2000 MW (500X4) situated in ER
SUMMARY OF UI – 141 WKS(FROM 01/JAN/03 TO 11/SEPT/05)
WEEK WISEUI AMOUNT
Total UI in MUsTotal amount in
Crores Rs. Average rate of UI in
paise/unit
AP -4619 -892 193 (S)
KAR 4438 835 188 (P)
KER 981 148 151 (P)
TN 1517 421 277 (P)
RSTPS (1-6) 516 -113 219 (S)
RSTPS UNIT 7 32 -7 13 (S)
NLC II/1 41 -13 409 (S)
NLC II/2 386 -70 551 (S)
NLCEXP 31 -8 65 (S)
TALST2 127 -36 59 (S)UI IN MU
(+) OVER DRAWAL BY STATES (+) OVER GENERATION BY GENERATORS
( - ) UNDER DRAWAL BY STATES ( - ) UNDER GENERATION BY GENERATORS
TOTAL AMOUNT ( + ) PAYABLE TO THE POOL ( - ) RECEIVABLE FROM THE POLL
P - PURCHASE PRICE S - SELLING PRICE
SUMMARY OF UI –65 WKS(FROM 01/JAN/03 TO 29/MAR/04)
Total UI in MUsTotal amount in
Crores Rs. Average rate of UI in
paise/unit
AP -2061 -385 187 (S)
KAR 1695 285 168 (P)
KER 864 142 164 (P)
TN 510 125 244 (P)
RSTPS (1-6) 164 -24 148 (S)
RSTPS UNIT 7
NLC II/1 -6 2 270 (S)
NLC II/2 185 -27 144 (S)
NLCEXP -8 2 242 (S)
TALST2 12 3 210 ( P)UI IN MU
(+) OVER DRAWAL BY STATES (+) OVER GENERATION BY GENERATORS
( - ) UNDER DRAWAL BY STATES ( - ) UNDER GENERATION BY GENERATORS
TOTAL AMOUNT ( + ) PAYABLE TO THE POOL ( - ) RECEIVABLE FROM THE POLL
P - PURCHASE PRICE S - SELLING PRICE
WEEK WISEUI AMOUNT
SUMMARY OF UI – 76 WKS(FROM 29/MAR/04 TO 11/SEPT/05)
Total UI in MUsTotal amount in
Crores Rs. Average rate of UI in
paise/unit
AP -2557 -506 198 (S)
KAR 2743 551 201 (P)
KER 117 7 59 (P)
TN 1007 296 294 (P)
RSTPS (1-6) 352 -89 251 (S)
RSTPS UNIT 7 32 -7 223 (S)
NLC II/1 47 -14 307 (S)
NLC II/2 200 -43 216 (S)
NLCEXP 40 -10 253 (S)
TALST2 115 -38 333 ( S)UI IN MU
(+) OVER DRAWAL BY STATES (+) OVER GENERATION BY GENERATORS
( - ) UNDER DRAWAL BY STATES ( - ) UNDER GENERATION BY GENERATORS
TOTAL AMOUNT ( + ) PAYABLE TO THE POOL ( - ) RECEIVABLE FROM THE POLL
P - PURCHASE PRICE S - SELLING PRICE
WEEK WISEUI AMOUNT
DECLRATION OF ACTUAL DC BY NTPC STATIONS OVER NORMATIVE DC
RSTPS (U1 - U6)
Month
Average Normative DC
Average Actual
DC
Average Additional DC
Maximum Additional DC
Extra Available Energy To
Constituents (in MW) (in MW) (in
MW) (in % ) (in MW) (in %)
Dec-04 1817.87 1823.46 6 0.31 30 1.65 4.163
Jan-05 1934.00 1976.59 43 2.20 76 3.93 31.689
Feb-05 1934.00 1984.60 51 2.62 76 3.93 34.001
Mar-05 1922.23 1983.50 61 3.19 76 3.95 45.591
Apr-05 1878.49 1910.26 32 1.69 56 2.98 22.873
May-05 1895.89 1937.95 42 2.22 76 4.01 31.287
MonthAs Per TNEB
As Per SRLDC
As Per TNEB
As Per SRLDC
As Per TNEB
As Per SRLDC
As Per TNEB
As Per SRLDC
As Per TNEB
As Per SRLDC
Apr-04 0.79 0.73 -0.24 -0.24 0.74 0.74 0.68 0.51 0.80 0.79
May-04 3.84 -4.44 0.60 -1.06 0.39 -0.23 2.60 -3.82 1.38 0.61
Jun-04 2.04 -0.23 -1.23 -1.46 0.75 0.24 3.17 -3.25 1.33 0.96
Jul-04 1.87 0.79 1.59 1.74 0.83 0.38 6.24 -1.76 0.89 0.81
Aug-04 1.74 0.38 0.20 0.28 0.56 0.49 2.52 -0.16 1.00 0.04
Sep-04 1.25 0.86 0.71 0.77 0.45 0.44 1.45 -0.31 0.82 0.70
Oct-04 1.50 0.31 0.69 0.59 0.38 0.38 2.54 -0.55 1.38 1.11
Nov-04 2.13 0.94 0.69 0.68 1.02 1.00 1.80 0.89 0.98 0.85
Dec-04 2.56 1.12 0.75 0.74 0.53 0.52 5.28 -0.07 1.11 1.10
Jan-05 1.15 0.95 1.01 0.97 0.68 0.68 1.97 -0.83 1.00 0.99
Feb-05 1.30 0.90 1.00 0.98 0.67 0.67 2.36 -0.38 0.63 0.63
Mar-05 1.39 0.95 1.13 1.04 1.31 0.74 1.49 0.72 0.74 0.74
Apr-05 1.29 1.07 1.13 0.87 1.29 0.73 5.66 -0.04 1.01 0.51
May-05 1.12 1.03 1.12 1.06 1.59 0.77 1.97 0.63 0.97 0.96
AVG 1.71 0.38 0.65 0.50 0.80 0.54 2.84 -0.60 1.00 0.77
From the above it can be seen that the values pertaining to excess generation above DC , as reflected in thepetition by TNEB do not match with the actual data available with SRLDC and are on much higher side.
STATEMENT SHOWING EXCESS GENERATION OVER DC (IN PERCENT) MONTHWISE
NLC II/2 NLCEXPNLCNTPC
RSTPS TALCHER2 NLC II/1
(DETAILS SUBMITTED BY TNEB IN PETITION vis-à-vis THE ACTUAL ONES AS PER RECORDS/DATA WITH SRLDC)
STATEMENT SHOWING DC, SCHEDULE AND ACTUAL INJECTION AS PER DATA AVAILABLE AT SRLDC
MONTH
DC SCHEDULE ACTUAL (ACTUAL-DC)/DC DC SCHEDULE ACTUAL (ACTUAL-DC)/DC
in % in %
Apr-04 1391.44 1390.61 1401.64 0.73 610.10 610.10 608.65 -0.24
May-04 1346.65 1241.46 1289.35 -4.44 611.35 601.42 604.95 -1.06
Jun-04 1263.34 1235.22 1260.46 -0.23 617.73 616.85 608.85 -1.46
Jul-04 1076.74 1067.38 1085.30 0.79 658.54 658.54 670.17 1.74
Aug-04 1095.52 1080.91 1099.69 0.38 322.83 322.82 323.74 0.28
Sep-04 1254.65 1249.89 1265.49 0.86 551.09 551.09 555.35 0.77
Oct-04 1065.68 1053.17 1068.98 0.31 621.29 620.07 624.96 0.59
Nov-04 1376.35 1360.29 1389.34 0.94 681.90 681.90 686.58 0.68
Dec-04 1380.13 1360.88 1395.72 1.12 802.82 802.82 808.82 0.74
Jan-05 1470.59 1466.85 1484.68 0.95 835.40 835.40 843.59 0.97
Feb-05 1416.11 1410.66 1428.94 0.90 730.99 730.93 738.26 0.98
Mar-05 1475.73 1466.12 1489.86 0.95 866.91 866.91 876.06 1.04
Apr-05 1375.39 1373.09 1390.32 1.07 936.30 934.32 944.49 0.87
May-05 1441.83 1440.68 1456.77 1.03 777.20 777.11 785.50 1.06
AVG 1307.67 1297.10 1317.96 0.38 700.25 699.90 705.53 0.50
MAX 1475.73 1466.85 1489.86 1.12 936.30 934.32 944.49 1.74
MIN 1065.68 1053.17 1068.98 -4.44 322.83 322.82 323.74 -1.46
TALCHER ST2RSTPS
STATEMENT SHOWING DC, SCHEDULE AND ACTUAL INJECTION AS PER DATA AVAILABLE AT SRLDC
MONTHDC SCHEDULE ACTUAL (ACTUAL-DC)/DC DC SCHEDULE ACTUAL (ACTUAL-DC)/DC DC SCHEDULE ACTUAL (ACTUAL-DC)/DC
DC DC DC
Apr-04 361.91 361.91 364.59 0.74 432.97 432.24 435.20 0.51 264.77 264.77 266.89 0.79
May-04 197.77 196.55 197.32 -0.23 352.02 330.46 339.06 -3.82 187.20 185.78 188.35 0.61
Jun-04 255.35 254.05 255.95 0.24 318.15 298.67 308.14 -3.25 195.00 194.31 196.88 0.96
Jul-04 366.50 361.51 367.91 0.38 535.63 500.00 526.37 -1.76 271.76 271.41 273.97 0.81
Aug-04 255.89 255.64 257.16 0.49 476.36 463.92 475.60 -0.16 276.04 273.40 276.15 0.04
Sep-04 273.86 273.86 275.08 0.44 440.68 432.94 439.33 -0.31 266.44 265.89 268.31 0.70
Oct-04 290.92 290.92 292.03 0.38 315.74 306.24 314.02 -0.55 186.87 186.51 188.98 1.11
Nov-04 87.82 87.81 88.71 1.00 120.54 119.61 121.61 0.89 219.07 218.84 220.94 0.85
Dec-04 312.12 312.12 313.76 0.52 386.27 374.74 386.00 -0.07 252.29 252.29 255.10 1.10
Jan-05 365.94 365.94 368.44 0.68 432.14 420.29 428.57 -0.83 268.62 268.62 271.31 0.99
Feb-05 369.89 369.89 372.38 0.67 470.00 457.47 468.24 -0.38 252.43 252.43 254.02 0.63
Mar-05 403.21 400.95 406.22 0.74 537.74 533.73 541.66 0.72 281.30 281.30 283.38 0.74
Apr-05 390.36 388.24 393.23 0.73 536.39 507.44 536.17 -0.04 224.52 223.42 225.67 0.51
May-05 386.70 383.59 389.70 0.77 532.35 525.40 535.73 0.63 281.35 281.35 284.07 0.96
AVG 304.33 303.16 305.99 0.54 419.54 405.45 416.96 -0.60 243.30 242.73 245.16 0.77
MAX 403.21 400.95 406.22 1.00 537.74 533.73 541.66 0.89 281.35 281.35 284.07 1.11
MIN 87.82 87.81 88.71 -0.23 120.54 119.61 121.61 -3.82 186.87 185.78 188.35 0.04
NLC TS2 /1 NLC TS2 /2 NLC EXP
EXCESS MAXIMUM MW DECLARED OVER NORMATIVE DC BY NTPC OF RSTPS (1-6) FROM DEC 04 TO AUG 05
0
10
20
30
40
50
60
70
80
90
100
25-Oct-04 25-Nov-04 26-Dec-04 26-Jan-05 26-Feb-05 29-Mar-05 29-Apr-05 30-May-05
30-Jun-05 31-Jul-05 31-Aug-05 01-Oct-05
DAYS ->
EX
CE
SS
MA
XIM
UM
MW
IN
A D
AY
- >
EXCESS MAXIMUM MW DECLARED OVER NORMATIVE DC BY NTPC OF RSTPS UNIT 7 FROM MAR 05 TO AUG 05
0
2
4
6
8
10
12
14
16
18
01-Mar-05 20-Apr-05 09-Jun-05 29-Jul-05 17-Sep-05
DAYS -- >
EX
CE
SS
MA
XIM
UM
MW
IN A
DA
Y -
>
EXCESS MAXIMUM MW DECLARED OVER NORMATIVE DC BY NTPC OF TALCHER STAGE 2 FROM DEC 04 TO AUG 05
0
5
10
15
20
25
30
35
09-Nov-04 29-Dec-04 17-Feb-05 08-Apr-05 28-May-05 17-Jul-05 05-Sep-05 25-Oct-05
DAYS -->
EX
CE
SS
MA
XIM
UM
MW
IN
A D
AY
- >
GRAPHS OF DC, SCHEDULE AND ACTUAL DRAWAL
• NTPC–RSTPS–RSTPS UNIT 7–TALCHER STAGE 2
• NLC–NLC STAGE 2/1–NLC STAGE 2/2–NLC TPS1 EXPANSION
• TNEB
DC,SCHEDULE AND ACTUAL DRAWAL
• NTPC– RSTPS MW
MU- TALCHER STAGE 2 MW MU
• NLC– NLC STAGE 2/1 MW
MU– NLC STAGE 2/2 MW
MU– NLC TPS1 EXPANSION MW
MU