CE (TR)/ACE (TR)/SE/EE/DE-L/991 Date: 11.11.2011
REPORT ON KEY PERFORMANCE INDICATORS OF TRANSMISSION FOR Sept-2011.
(A) System Availability: -
|
|
Unit
|
Previous year –this month
|
Current year – this month
|
Rating
|
Remarks
|
|
400KV Trans. Lines
|
%
|
99.18
|
99.06
|
Good
|
|
|
220KV Trans. Lines
|
%
|
99.46
|
99.33
|
Good
|
|
|
132KV Trans. Lines
|
%
|
99.58
|
99.36
|
Excellent
|
|
|
66 KV Trans. Lines
|
%
|
99.82
|
99.82
|
Excellent
|
|
|
SUB-STATIONS
|
%
|
99.88
|
99.85
|
Excellent
|
|
TRANSMISSION SYSTEM AVAILABILITY = 99.43% (Worked out for 132 KV & above as per CEA guideline)
(B) Network Outages and Faults :-
|
|
Voltage KV
|
Unit
|
Previous year – this month
|
Current year – this month
|
Rating
|
Remarks
|
|
Planned Outages
|
400
|
Hrs/ 100 km
|
4.90
|
1.40
|
Excellent
|
|
220
|
6.03
|
6.67
|
Good
|
|
132
|
3.41
|
6.20
|
Good
|
|
66
|
5.30
|
7.63
|
Good
|
|
Transient Trippings
|
400
|
Nos/ 100 km
|
0.00
|
0.00
|
Excellent
|
|
220
|
0.45
|
0.36
|
Good
|
|
132
|
0.95
|
1.31
|
Good
|
|
66
|
1.69
|
1.16
|
Good
|
|
Permanent Faults
|
400
|
Nos/ 100 km
|
0.00
|
0.00
|
Excellent
|
|
220
|
0.18
|
0.14
|
Good
|
|
132
|
0.07
|
0.20
|
Good
|
|
66
|
0.18
|
0.22
|
Good
|
|
ESD
|
400
|
Nos/ 100 km
|
0.14
|
0.04
|
Excellent
|
|
220
|
0.06
|
0.10
|
Good
|
|
132
|
0.15
|
0.10
|
Good
|
|
66
|
0.19
|
0.15
|
Good
|
|
(C) Safety : (Employees Accidents only) : -
|
Previous year - this month : 0 Nos. of accidents
|
|
Current Year – this month : 3 Nos. of accidents (1-Fatal & 2-Nonfatal)
|
|
Rating : Average
|
|
Previous year – up to this month : 2 Nos. of accidents (2-Nonfatal)
|
|
Current Year – up to this month : 5 Nos. of accidents (1 Fatal & 4-Nonfatal)
|
|
Rating : Average
|
(D) Equipment Failure: -
(In percentage and Nos. of total population of each category)
|
Equipment
|
|
Transformer
|
CT
|
PT
|
LA
|
CB
|
|
Previous year – this month
|
%
|
0.09
|
0.02
|
0.12
|
0.07
|
0.01
|
|
Nos
|
2
|
4
|
4
|
7
|
2
|
|
Current year – this month
|
%
|
0.13
|
0.02
|
0.11
|
0.02
|
0.01
|
|
Nos
|
3
|
3
|
4
|
3
|
2
|
|
Rating
|
|
Good
|
Excellent
|
Good
|
Excellent
|
Excellent
|
|
Previous year – till this month total failure
|
%
|
0.75
|
0.62
|
0.55
|
0.31
|
0.05
|
|
Nos
|
17
|
102
|
19
|
33
|
8
|
|
Current year – till this month total failure
|
%
|
0.81
|
0.34
|
0.34
|
0.32
|
0.04
|
|
Nos
|
19
|
63
|
13
|
39
|
7
|
|
The overall cumulative failure of equipment is reduced as compared to last year
|
(E) % Availability of Capacitor Banks : -
|
|
132Kv class
|
66kV class
|
11kV class
|
|
Installed MVAR
|
216.0
|
1312.7
|
2574.8
|
|
Available MVAR
|
216.0
|
1234.8
|
2425.3
|
|
% availability
|
100%
|
94.07%
|
90.67%
|
|
Rating
|
Excellent
|
Average
|
Average
|
(F) Substation Inspection: -
|
|
132kV & above s/s
|
66kv s/s
|
|
Total Nos. of s/s
|
129
|
990
|
|
Inspected s/s during previous year – this month
|
14
|
155
|
|
Inspected s/s during current year – this month
|
21
|
143
|
|
Rating
|
Good
|
Excellent
|
(G) Bus faults :
|
During previous year – this month
|
7 Nos.
|
|
During current year – this month
|
7 Nos.*
|
|
Rating
|
Average
|
Note: - (*)Bus fault occurred at (1) 220Kv Dahej s/s of Bharuch circle. (2) 66Kv Solankipura s/s of Nadiad circle (3) 66Kv Khanpur s/s of Mehsana circle (4) 66 Kv Jadiya s/s of Palanpur circle (5) 66kv Umrali s/s and 66Kv Rafaleshwar s/s of Gondal circle (6) 400 Kv Chorania s/s of Chorania circle.
(H) Transmission Loss :
(Banchmark for the Transmission losses for the year 2011-12 = 4.18%)
|
|
Conventional method
|
Revised method*
|
Final Revised Calculation
(After deducting APL-Sami-Dehgam line losses)
|
|
Previous year –
this month
|
4.65 %
|
4.41 %
|
4.41 %
|
|
Current year –
this month
|
4.29 %
|
3.92 %
|
3.80 %
|
|
|
|
Previous year –
Average up to this month
|
4.39 %
|
4.05 %
|
4.05 %
|
|
Current year -
Average up to this month
|
4.73 %
|
4.41 %
|
4.20 %
|
|
Rating
|
Average
|
Good
|
Good
|
Note: (*) as per the new methodology proposed by ARR.
|
|
Total MUs
|
Agriculture MUs
|
% Agriculture MUs
|
|
Previous year– this month
|
4178.28
|
590.02
|
14.12
|
|
Current year – this month
|
4300.31
|
576.79
|
13.41
|
CE (TR)
MANAGING DIRECTOR