S. No.

Particulars

Level specified by the

Commission

Level Achieved by

RRVPNL during 2004-05

33 kV

11 KV

1.

System Availability

Level –3

98%

99.585

99.31

2.

Voltage Profile

Class

Max.

Min.

Max.

Min.

400 kV

420

360

434

370

220 kV

245

200

250

159

132 kV

145

120

149

90

66 kV

72.6

59.4

--

--

33 kV

34.98

30.03

39

23.6

11 kV

11.66

10.01

12.9

8.3

3.

Voltage Unbalance

Level –3

220 kV and above

2%

400 kV

Nil

220 kV

9.5

Below 220 kV

3%

132 kV

9.8

33 kV

10.51

11 kV

9.23

4.

Voltage Variation

Index

  Level –3

For higher Voltage 

For lower Voltage 

400 kV

1.125%

400 kV

2.215

0.71

220 kV

1%

220 kV

2.369

2.709

132 kV

1%

132 kV

1.889

3.08

66 kV

1%

66 kV

--

--

33 kV

2.856

2.796

11 kV

2.924

3.045

5.

Frequency Variation

Index

As per IEGC

¨

6.

Loss of Load

Expectation (LOLE)

Level –3

2%

$

7.

System Average

Interruption Frequency Index

(SAIFI)

33 kV

11 kV

Level –3

18 per year

12.53 Nos.

9.66 Nos.

8.

System Average

Interruption Duration Index

(SAIDI)

33 kV

11 kV

Level –3

  8 hrs. / year

8.06 Hrs./ year

6.52 Hrs./  year

9.

Total Harmonic

Distortion (THD)

Level –3

   ¨

IEC Std. 1000-4-7 or

IEEE Std. 519

Not to Exceed 1% at EHV Interconnection point.

10.

Safety Manual

To be published

Draft under finalization

11.

List of Sub-Station Where current Unbalance noticed.

¨