Post on 01-Apr-2015
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