IMPLICATION OF NEW UI REGIME AS PER CERC REGULATION NOTIFIED ON 30.03.2009 APPLICABLE FROM 01.04.2009.

STATE LOAD DESPATCH CENTRE

IMPLICATION OF NEW UI REGIME AS PER CERC REGULATION DATED 30.03.2009 APPLICABLE FROM 01.04.2009.

SN. Prior to 31.03.2009 After 31.03.2009

1 Frequency range for unscheduled inter change charge for frequency range below 50.5Hz. to 49.0Hz. The rate of UI below 50.5Hz. and upto 49.80Hz. linear in 0.02Hz. step at 8Ps/Unit for each step. Below 49.8Hz, linear in 0.02Hz. step in 18Ps per unit. The maximum UI rate is Rs.10/Unit.

Frequency range for unscheduled inter change charge for frequency range below 50.3Hz. to 49.2Hz.The rate of UI below 50.3 and upto 49.5Hz. linear in 0.02Hz. step at 12Ps/Unit for each step. Below 49.5Hz and upto 49.2Hz. linear in 0.02 Hz step in 17Ps per unit

2. UI Cap for generatorsFor coal, lignite and APM gas fired generations, the cap is 406Ps/Unit for over generation.

UI Cap for generatorsFor coal, lignite and APM gas fired generations, the cap is 408s/Unit for over generation or under generation in the frequency range between 50.3Hz and upto 49.2Hz.

IMPLICATION OF NEW REGIME AS PER CERC REGULATION ON UI SETTLEMENT MECHANISM ISSUED ON 30.03.2009 APPLICABLE FROM 01.04.2009.

S N. Prior to 31.03.2009 After 31.03.2009

3. UI Cap for states NIL

OD shall not exceed 12%age of its scheduled drawal or 150MW wherever is lower when frequency is below 49.5Hz and 3% on daily aggregate basis.Under generation of electricity from a generating station shall not exceed 12% of the scheduled injection when a frequency is below 49.5Hz and 3% on daily aggregate basis.

4 Penalty for deviation For generators : In case of over generation, the same is restricted 105% of DC in a time block and 101% during the day is eligible for UI and capped at 406Ps/Unit For states: Same rates of UI are applicable for OD / UD

For generators : for over generations, the cap is 408Ps/ Unit for over generation or under generation in the freq range between 50.3Hz and upto 49.2Hz. For under generations, when freq. is below 49.2Hz, the generating stations using coal, lignite or gas supplied under APM as fuel, additional unscheduled inter change charge equivalent to 40% of UI cap rate i.e. 571.20Ps/Unit.For States: For over drawal during frequency below 49.2Hz, additional unscheduled inter change charge at the rate equivalent to 40% of the UI rate corresponding to frequency of 49.2Hz.i.e.1029 Ps/Unit.

IMPLICATION OF NEW REGIME AS PER CERC REGULATION ON UI SETTLEMENT MECHANISM ISSUED ON 30.03.2009 APPLICABLE FROM 01.04.2009.

S. N. Prior to 31.03.2009 After 31.03.2009

5 Reporting of Deviation from schedule :NIL

RLDC shall prepare and publish on its website the records, on monthly basis of UI accounts specifying the quantum of over drawal / under generation and corresponding amount of UI paid / received for each beneficiaries or generating station for time blocks when the frequency was below 49.2Hz and between 49.5 – 49.2Hz separately.

IMPLICATION OF NEW REGIME AS PER CERC REGULATION ON UI SETTLEMENT MECHANISM ISSUED ON 30.03.2009 APPLICABLE FROM 01.04.2009.

S. N. Prior to 31.03.2009 After 31.03.2009

5 Reporting of Deviation from schedule :NIL

RLDC shall prepare and publish on its website the records, on monthly basis of UI accounts specifying the quantum of over drawal / under generation and corresponding amount of UI paid / received for each beneficiaries or generating station for time blocks when the frequency was below 49.2Hz and between 49.5 – 49.2Hz separately.

UI Account as per new CERC Regulation dated 30.03.09 (for the week 47/FY0809)All FIGURES IN Rs LACS

SrNo. 

(1)

INTRASTATEUTILITY 

(2)

RECEIVING  

(3)

PAYING  

(4)

DIFFERENCE OF INTERSTATE UI & INTRASTATEUI ADJUSTMENT AS PER THE DECISION TAKEN IN THE MEETING HELD IN SLDC ON 04.04.07 & 10.04.08(5)

ADJUSTED U.I.AMOUNT 

(6)

UI Amount with capping of Coal based generators

(7)

Diff_UIAmount or Pool balance due to Capping

(8)=(7)-(6)

AdditionalUI amount 

(9)

NETUI Amount

 

(10)=(9)+(7) for Th Gen station & (9)+(6) for others

1 I.P.STN 0.00000 4.48651 -0.05531 4.43120 2.83652 -1.59467 0.29668 3.13321

2 RPH 0.00000 0.50689 -19.76073 -19.25384 -20.55811 -1.30427 0.23173 -20.32638

3 G.T.STN. 7.45012 0.00000 1.76994 -5.68018     1.10004 -4.58015

  IPGCL 7.45012 4.99340 -18.04610 -20.50282 -17.72158 -2.89894 1.62845 -21.77332

4 PRAGATI 28.92797 0.00000 -0.84073 -29.76870     0.36799 -29.40071

5 BTPS 77.95533 0.00000 -2.09058 -80.04591 -59.35874 20.68717 0.31128 -59.04746

6 BYPL 390.34290 0.00000 -21.09753 -411.44042     6.84912 -404.59131

7 BRPL 0.00000 98.66108 -3.08084 95.58024     23.93787 119.51811

8 NDPL 0.00000 242.90314 -48.87707 194.02607     16.35791 210.38398

9 NDMC 679.80017 0.00000 -34.48776 -714.28793     0.67764 -713.61029

10 MES 173.65256 0.00000 -6.54346 -180.19603     0.00000 -180.19603

  TOTAL 1358.12906 346.55762 -135.06407 -1146.63550   17.78822 50.13025 -1078.71703

ABSTRCT OF UI AMOUNT

(-) indicates recievable & (+) indicates payable All FIGURES IN Rs LACS

SrNo.

 

 UTILITY

 

 RECEIVING

 

 PAYING

 

 Amount for Cuurent

Week

1 I.P.STN 0.00000 3.13321 3.13321

2 RPH 20.32638 0.00000 -20.32638

3 G.T.STN. 4.58015 0.00000 -4.58015

  IPGCL 24.90652 3.13321 -21.77332

4 PRAGATI 29.40071 0.00000 -29.40071

5 BTPS 59.04746 0.00000 -59.04746

6 BYPL 404.59131 0.00000 -404.59131

7 BRPL 0.00000 119.51811 119.51811

8 NDPL 0.00000 210.38398 210.38398

9 NDMC 713.61029 0.00000 -713.61029

10 MES 180.19603 0.00000 -180.19603

11 Regional UI NRPC 0.00000 1146.63550 1146.63550

12 Pool balance of additional UI 50.13025 0.00000 -50.13025

13 Pool balance of capping 17.78822 0.00000 -17.78822

  TOTAL 1479.67079 1479.67079 0.00000

UI FOR NDPLDates Scheduled

Drawal in Mus

Actual Drawal in Mus

UI Energy in Mus

Admissible un adjusted UI amount in

Rs. Lacs

Adjusted UI amount in Rs Lacs

Additional UI energy in

Mus(Overdrawal below 49.2

hz)

Additional UI Charge in Lacs

NET UI AMOUNT

16 14.436272 14.715696 0.279424 -1.93440 -2.08663 0.000000 0.00000 -2.08663

17 14.728362 15.271671 0.543309 24.06934 31.91207 0.043892 1.29043 33.20250

18 14.806167 15.143702 0.337535 18.70487 -4.35349 0.091315 2.68465 -1.66884

19 14.619150 15.311710 0.692560 39.43760 21.37023 0.029116 0.85602 22.22624

20 13.798034 15.306690 1.508656 89.48354 92.78443 0.158869 4.67076 97.45519

21 14.139211 14.515027 0.375816 17.72054 13.96359 0.053354 1.56860 15.53219

22 13.394552 14.321108 0.926556 55.42165 40.43587 0.179845 5.28745 45.72332

Total 99.921749 104.585605 4.663856 242.90314 194.02607 0.556391 16.35791 210.38398

UI FOR BRPLDates Scheduled

Drawal in Mus

Actual Drawal in Mus

UI Energy in Mus

Admissible un adjusted UI

amount in Rs. Lacs

Adjusted UI amount in Rs Lacs

Additional UI energy in

Mus(Overdrawal below 49.2

hz)

Additional UI Charge in

Lacs

NET UI AMOUNT

16 20.363430 19.930210 -0.433220 -2.87814 -3.10463 0.005548 0.16311 -2.94152

17 19.711029 19.713834 0.002805 24.38234 32.32706 0.071559 2.10383 34.43089

18 20.737519 20.102294 -0.635226 -6.72302 -7.43790 0.117676 3.45967 -3.97823

19 20.187058 19.818130 -0.368928 -5.00688 -5.43662 0.036840 1.08311 -4.35352

20 18.818719 19.402314 0.583594 40.30373 41.79046 0.137475 4.04175 45.83222

21 19.030273 19.485170 0.454898 34.17821 26.93204 0.037719 1.10894 28.04098

22 18.063827 18.090293 0.026466 14.40484 10.50984 0.407396 11.97745 22.48728

Total 136.911855 136.542245 -0.369610 98.66108 95.58024 0.814213 23.93787 119.51811

UI FOR BYPLDates Scheduled

Drawal in Mus

Actual Drawal in

Mus

UI Energy in Mus

Admissible un adjusted UI

amount in Rs. Lacs

Adjusted UI amount in Rs Lacs

Additional UI energy in

Mus(Overdrawal below 49.2

hz)

Additional UI Charge

in Lacs

NET UI AMOUNT

16 13.793345 11.406992 -2.386352 -113.64509 -122.58837 0.000000 0.00000 -122.58837

17 12.077924 11.195310 -0.882615 -47.76829 -41.04499 0.000000 0.00000 -41.04499

18 13.133001 11.786996 -1.346005 -65.38624 -72.33896 0.000000 0.00000 -72.33896

19 12.773377 11.735454 -1.037923 -52.93906 -57.48279 0.006328 0.18604 -57.29675

20 11.826485 11.676766 -0.149720 -6.88711 -6.60080 0.053682 1.57825 -5.02255

21 12.133597 11.622033 -0.511564 -35.01408 -36.97199 0.047939 1.40942 -35.56257

22 12.411636 11.090471 -1.321165 -68.70303 -74.41252 0.125014 3.67540 -70.73712

Total 88.149366 80.514022 -7.635344 -390.34290 -411.44042 0.232963 6.84912 -404.59131

UI FOR NDMCDates Scheduled

Drawal in Mus

Actual Drawal in Mus

UI Energy in Mus

Admissible un adjusted UI

amount in Rs. Lacs

Adjusted UI amount in Rs Lacs

Additional UI energy in

Mus(Overdrawal below 49.2

hz)

Additional UI Charge

in Lacs

NET UI AMOUNT

16 5.025517 2.566659 -2.458858 -101.86160 -109.87758 0.000000 0.00000 -109.87758

17 3.564652 2.559847 -1.004805 -52.12713 -44.79033 0.021299 0.62620 -44.16414

18 4.657295 2.610010 -2.047285 -108.18179 -119.68508 0.000000 0.00000 -119.68508

19 4.434672 2.567762 -1.866910 -102.74910 -111.56801 0.000000 0.00000 -111.56801

20 3.864092 2.543885 -1.320207 -75.19731 -72.07128 0.001750 0.05144 -72.01984

21 4.281539 2.234281 -2.047258 -121.61368 -128.41405 0.000000 0.00000 -128.41405

22 4.014334 1.953063 -2.061271 -118.06956 -127.88160 0.000000 0.00000 -127.88160

Total 29.842102 17.035507 -12.806595 -679.80017 -714.28793 0.023049 0.67764 -713.61029

UI FOR MESDates Scheduled

Drawal in Mus

Actual Drawal in

Mus

UI Energy in Mus

Admissible un adjusted UI

amount in Rs. Lacs

Adjusted UI amount in Rs Lacs

Additional UI energy in

Mus(Overdrawal below 49.2

hz)

Additional UI Charge

in Lacs

NET UI AMOUNT

16 1.030915 0.527369 -0.503546 -19.13828 -20.64436 0.000000 0.00000 -20.64436

17 1.028491 0.519858 -0.508633 -24.72170 -21.24216 0.000000 0.00000 -21.24216

18 1.056662 0.519627 -0.537035 -26.60829 -29.43763 0.000000 0.00000 -29.43763

19 1.007310 0.500870 -0.506440 -26.37728 -28.64123 0.000000 0.00000 -28.64123

20 0.812088 0.482978 -0.329110 -18.16691 -17.41170 0.000000 0.00000 -17.41170

21 0.892862 0.449887 -0.442975 -25.54169 -26.96992 0.000000 0.00000 -26.96992

22 1.023900 0.433735 -0.590165 -33.09842 -35.84903 0.000000 0.00000 -35.84903

Total 6.852227 3.434324 -3.417903 -173.65256 -180.19603 0.000000 0.00000 -180.19603

UI FOR GT

Dates

Declared Ex-bus

Capacity in Mus

Scheduled Ex-bus

generation in Mus

Actual Ex-bus

generation in Mus

UI Energy in

Mus

Admissible UI

energy in Mus

UI Amount in Rs. Lacs

Admissible un adjusted UI amount in Rs. Lacs

ADDITIONAL UI AMOUNT IN LACKS (Undergeneration below 49.2 Hz)

Adjusted UI amount in lacks

NET UI

16 4.636000 4.043256 4.110742 0.067486 0.067486 -2.80211 -2.80211 0.03077 -3.02262 -2.99186

17 4.542500 3.572520 3.273184 -0.299336 -0.299336 7.81121 7.81121 0.00000 10.3564110.3564

1

18 4.134000 2.993444 2.993444 0.000000 0.000000 0.00000 0.00000 0.00000 0.00000 0.00000

19 3.810000 3.299409 3.363000 0.063591 0.063591 -3.49528 -3.49528 0.00000 -3.79528 -3.79528

20 3.684000 3.131398 3.183017 0.051619 0.048755 -3.13507 -2.96923 0.06890 -2.84580 -2.77690

21 4.204750 3.217266 3.289794 0.072528 0.072528 -4.41397 -4.41397 0.00845 -4.66078 -4.65234

22 3.330000 2.750236 2.825861 0.075625 0.041483 -3.39022 -1.58074 0.99193 -1.71211 -0.72018

Total 28.341250 23.007529 23.039042 0.031513 -0.005494 -9.42543 -7.45012 1.10004 -5.68018 -4.58015

UI FOR PPCL

Dates Declared Ex-bus

Capacity in Mus

Scheduled Ex-bus

generation in Mus

Actual Ex-bus

generation in Mus

UI Energy in Mus

Admissible UI energy in

Mus

UI Amount in Rs. Lacs

Admissible un adjusted UI amount in

Rs. Lacs

ADDITIONAL UI AMOUNT IN LACKS(Undergeneration below 49.2 hz)

Adjusted UI amount in lacks

NET UI

16 5.792000 5.684450 5.795040 0.110590 0.110590 -3.53735 -3.53735 0.00000 -3.81572 -3.81572

17 4.734000 4.686791 4.776168 0.089377 0.089377 -4.88030 -4.88030 0.00000 -4.19341 -4.19341

18 4.735000 4.687169 4.776774 0.089605 0.088879 -6.17279 -6.12415 0.00000 -6.77535 -6.77535

19 4.752000 4.698892 4.766580 0.067688 0.067687 -4.29028 -4.29028 0.00000 -4.65851 -4.65851

20 4.800000 4.740000 4.808238 0.068238 0.068238 -3.70784 -3.70784 0.08208 -3.55370 -3.47162

21 4.835000 4.669032 4.758786 0.089754 0.089754 -5.40414 -5.40414 0.01139 -5.70632 -5.69494

22 3.186750 3.144570 3.162702 0.018132 0.018132 -0.98391 -0.98391 0.27452 -1.06568 -0.79116

Total 32.834750 32.310904 32.844288 0.533384 0.532657 -28.97661 -28.92797 0.36799 -29.76870-

29.40071

UI FOR IP

Dates Declared Ex-bus

Capacity in Mus

Scheduled Ex-bus

generation in Mus

Actual Ex-bus

generation in Mus

UI Energy in Mus

Admissible UI

energy in Mus

ADDITIONAL UI AMOUNT IN LACKS(Undergeneration below 49.2 Hz)

Adjusted UI amount in lacks w/o capping

Adjusted UI amount in lacks with capping

NET UI

16 1.644500 1.644500 1.658905 0.014405 0.010960 0.00547 -0.651041 -0.508745 -0.50328

17 1.908417 1.908417 1.840495 -0.067921 -0.068618 0.08325 5.407930 3.727742 3.81100

18 2.254083 2.254083 2.243157 -0.010926 -0.011149 0.07170 -0.175305 -0.184127 -0.11242

19 2.251000 2.251000 2.266078 0.015078 0.014387 0.01968 -0.860564 -0.607617 -0.58794

20 2.214417 2.214417 2.225970 0.011554 0.006474 0.00733 -0.343814 -0.243168 -0.23584

21 2.001333 2.001333 1.998300 -0.003034 -0.005089 0.04207 0.348202 0.171054 0.21313

22 1.804000 1.804000 1.787992 -0.016008 -0.016337 0.06717 0.705788 0.481386 0.54856

Total 14.077750 14.077750 14.020899 -0.056851 -0.069372 0.29668 4.43120 2.83652 3.13321

UI FOR RPH

Dates Declared Ex-bus

Capacity in Mus

Scheduled Ex-bus

generation in Mus

Actual Ex-bus

generation in Mus

UI Energy in Mus

Admissible UI energy in

Mus

ADDITIONAL UI AMOUNT IN LACKS( Undergeneration below 49.2 hz)

Adjusted UI amount in lacks

Adjusted UI amount in lacks with capng

NET UI

16 2.208000 2.208000 2.198263 -0.009737 -0.009737 0.00000 -20.45162 -21.65065-

21.65065

17 2.208000 2.208000 2.159098 -0.048902 -0.048902 0.16395 3.39122 2.48394 2.64790

18 2.212500 2.212500 2.210211 -0.002289 -0.002289 0.03323 -0.00441 -0.02633 0.00690

19 2.208000 2.208000 2.209488 0.001488 0.001488 0.00000 -0.27186 -0.14904 -0.14904

20 2.208000 2.208000 2.219223 0.011223 0.011223 0.00667 -0.76728 -0.45285 -0.44618

21 2.228000 2.228000 2.231114 0.003114 0.003114 0.00955 -0.15399 -0.12367 -0.11412

22 2.208000 2.208000 2.222561 0.014561 0.014561 0.01833 -0.99590 -0.63951 -0.62118

Total 15.480500 15.480500 15.449958 -0.030542 -0.030542 0.23173 -19.25384 -20.55811-

20.32638

UI FOR BTPS

Dates Declared Ex-bus

Capacity in Mus

Scheduled Ex-bus

generation in Mus

Actual Ex-bus

generation in Mus

UI Energy in Mus

ADDITIONAL UI AMOUNT IN LACKS( Undergeneration below 49.2 Hz)

UI AMOUNT WITH CAPPING

Adjusted UI amount in lacks

Adjusted UI amount in lacks with capng

NET UI

16 15.388750 14.826250 15.154260 0.328010 0.00000 -11.73851 -15.181922 -12.728946 -12.72895

17 15.600000 15.256250 15.687024 0.430774 0.04419 -13.35715 -13.849539 -11.478003 -11.43381

18 15.556250 15.525000 15.771144 0.246144 0.00807 -8.04483 -14.137479 -9.001220 -8.99315

19 15.576500 15.456500 15.758688 0.302188 0.07429 -10.86938 -15.855329 -11.928347 -11.85405

20 11.993750 11.993750 12.127956 0.134206 0.00850 -4.16028 -6.785170 -4.044691 -4.03619

21 13.276250 13.276250 13.479324 0.203074 0.00000 -4.23386 -6.668422 -4.493547 -4.49355

22 14.922000 14.922000 15.088128 0.166128 0.17622 -5.22518 -7.568047 -5.683988 -5.50777

Total 102.313500 101.256000 103.066524 1.810524 0.31128 -57.62919 -80.04591 -59.35874 -59.04746

APPROVEL OF METHODOLOGY ADOPTED FOR DRAW OUT OF OVERDRAWAL OF DISCOM BETWEEN 49.5 Hz & 49.2 HZ AS PER LIMITS DEFINED BY DERC AND ADJUSTMENT REGARDING MISMATCH ARISING IN UI ACCOUNT DURING THE INTERIM PERIOD i.e. 01.04.09 TO 20.04.09 AS PER DERC ORDER DATED 21.04.09

THE LIMITS AS PER DERC ORDER ARE AS FOLLOWS:

    Over Drawal Allowed

S.NO. Name of the utility% of its scheduled

drawal MW3% on daily

aggregate basis

1 BRPL 12% 57 3%

2 NDPL 12% 38 3%

3 BYPL 12% 35 3%

4 NDMC 12% 17 3%

5 MES 12% 3 3%

TOTAL 150