Frequency Spectrum Comparison

0 0 0

91.55

1.86 0.26 0.01

15.99 7.04 6.58 11.47 1.24 15.77

79.66 84.80 88.51 80.31 84.20

4.36 1.41 8.62 0.02 18.45 0.03

0

10

20

30

40

50

60

70

80

90

100

Jan-03 Jan-04 Feb-03 Feb-04 Mar-03 Mar-04

Per

cen

tag

e o

f ti

me

(%)

Below 48.50 Below 49.00 49.00 to 50.00 Above 50.50

Comparison of Number of Frequency excursions

026

0 1 7

493

362

738

9

196

1

77

4

195

650

269

207

0

100

200

300

400

500

600

700

800

Jan-03 Jan-04 Feb-03 Feb-04 Mar-03 Mar-04

Nu

mb

er o

f E

xcu

rsio

ns

Below 48.5 Below 49.0 Above 50.5

A B C D=SQRT(BC)*A/100

UP 20140 86 289 562 348Haryana 10551 81 161 339 189Rajasthan 10759 85 156 278 177J & K 7947 68 144 225 123Delhi 747 15 60 112 13Punjab 625 11 71 106 9Uttaranchal 142 10 18 33 2HP 79 8 12 24 1UT Chandigarh 11 3 5 0 0

The above figures are based on the data obtained from Special Energy Meters (SEMs) installed in Northern Region.

Low Frequency conditions in March-2004due to

violation of IEGC permitted frequency band

The following figures relate to 15-minute time blocks under the ABT regime when the average frequency of the time block has been 49.0 Hz or below.. The total percentage of these low frequency blocks in March-2004 has been 16.02 %.

Violation index (ideal value 0)

Percentage of time state contributed to

this frequency violation

State/UTMWh

overdrawal below 49.0 Hz

Average of Maximum

overdrawal (MW)

Average overdrawal

(MW)

Violation Index of State Constituents during low frequency (<49.0) conditions in March-2004

177

123

13 9 2 1 0

189

348

0

50

100

150

200

250

300

350

400

450

UP

Hary

an

a

Raja

sth

an

J &

K

Delh

i

Pu

nja

b

Utt

ara

nch

al

HP

UT

Ch

an

dig

arh

Vio

lati

on

in

dex

Violation Index (VI) of '0' is ideal.Greater the VI, higher theindiscipline

A B C D=SQRT(BC)*A/100

UP 89592 92.31 299 673 414Haryana 53053 83.46 196 429 242Rajasthan 47588 83.23 176 375 214J & K 29701 67.00 136 258 126Punjab 5908 20.00 91 239 29Delhi 1752 7.85 69 98 6Uttaranchal 621 10.31 19 39 3HP 505 11.62 13 27 2UT Chandigarh 22 1.77 4 0 0

The above figures are based on the data obtained from Special Energy Meters (SEMs) installed in Northern Region.

Low Frequency conditions in March-2004due to

violation of IEGC permitted frequency band

The following figures relate to 15-minute time blocks under the ABT regime when the average frequency of the time block has been 49.5 Hz or below. The total percentage of these low frequency blocks in March-2004 has been 64.48 %.

State/UTMWh

overdrawal below 49.5 Hz

Violation index (ideal value 0)

Percentage of time state contributed to

this frequency violation

Average overdrawal

(MW)

Average of Maximum

overdrawal (MW)

Violation Index of State Constituents during low frequency (<49.50) conditions in March-2004

214

126

296 3 2 0

414

242

0

50

100

150

200

250

300

350

400

450

UP

Har

yan

a

Raj

asth

an

J &

K

Pu

nja

b

Del

hi

Utt

aran

chal

HP

UT

Ch

and

igar

h

Vio

lati

on

ind

ex

Violation Index (VI) of '0' is ideal.Greater the VI, higher theindiscipline

Reservoir Level in metres (last day of the month level)

476.92

485.35

469.88

477.02

460.86

466.12

406.05

400.14

404.58

399.28

400.41

260.82

260.91

260.02

259.08

258.5

257.25

344.65

347.11

344.74

346.97

345.15

379.63

382.55

379.62

381.27

379.18

379.6

400.26

347.09

0

100

200

300

400

500

600

Jan-03 Jan-04 Feb-03 Feb-04 Mar-03 Mar-04

Met

res

Bhakra Pong Rihand RPS Gandhisagar

Constituent

Cumulative UI Payable/Receivable in

Rs

PSEB -340,626,196HVPNL 26,258,922RRVPN -148,144,924DTL -1,459,168,953UPPCL 1,70,84,31,422UPCL -229,510,219HPSEB -175,685,184PDD 1,39,03,20,202UT -94,655,364Railways -20,264,844NTPC -298,999,556NHPC -120,247,543WREB 0EREB 0MPSEB 4,19,22,650WR-NR Pool Asset -166,060,792ER-NR-Pool Asset -85,953,989NJPC -27,615,632

UI Account as on 24-03-2004

Shutdown Program of Generating Units during April-Jun 2004

Station Unit No Capacity Period

From To

Singrauli 2 200 1st April 21st April

Singrauli 5 200 17th April 11th May

Dadri(Th) 1 210 1st April 9th April

Dadri(Th) 3 210 14th April 3rd May

Badarpur 4 210 1st April 11th April

Unchahar 4 210 21st April 15th May

Unchahar 3 210 16th Jun 20th July

Tanda 4 110 1st April 14th April

Tanda 3 110 10th April 19th April

Tanda 2 110 20th April 29th April