β¨ Reliability Performance Measures
23 AUGUST
NEW ZEALAND GAZETTE
2621
Reliability Performance Measures
1 Number of interruptions by class
| Class |
Description |
2000 |
1999 |
1998 |
1997 |
|
|
number of interruptions |
|
|
|
| A |
Transpower Planned |
0 |
0 |
0 |
0 |
| B |
Nelson Electricity Planned |
22 |
41 |
35 |
16 |
| C |
Nelson Electricity Unplanned |
8 |
4 |
8 |
7 |
| D |
Transpower Unplanned |
0 |
1 |
2 |
0 |
| E |
ECNZ Unplanned |
0 |
0 |
0 |
0 |
| F |
Other Generation |
0 |
0 |
0 |
0 |
| G |
Unplanned |
0 |
0 |
0 |
0 |
|
Total |
30 |
46 |
45 |
23 |
2 Interruption Targets for the following financial year
| Class |
Description |
2001 |
|
|
number of interruptions |
| (a) |
B Nelson Electricity Planned |
25 |
| (b) |
C Nelson Electricity Unplanned |
8 |
3 Average interruption targets for the subsequent four years
| Class |
Description |
2002 |
2003 |
2004 |
2005 |
|
|
number of interruptions |
| (a) |
B Nelson Electricity Planned |
25 |
25 |
25 |
25 |
| (b) |
C Nelson Electricity Unplanned |
8 |
8 |
8 |
8 |
4 Percentage of Class C interruptions not restored within-
|
|
2000 |
|
|
% of total class interruptions |
| (a) |
Three hours |
12.5% |
| (b) |
24 hours |
0.0% |
5 Faults (Class C) per 100 kilometres
(a) Total number of faults per 100 km
| Voltage |
2000 |
1999 |
1998 |
1997 |
| 33 kV |
9.7 |
4.8 |
8.7 |
4.4 |
| 11kV |
8.1 |
4.0 |
10.1 |
7.6 |
| Total |
8.4 |
4.7 |
9.7 |
7.2 |
(b) Total number of faults per 100 km following year
| Voltage |
2001 |
| 33 kV |
4.0 |
| 11kV |
4.0 |
| Total |
3.8 |
(c) Total number of faults per 100 km following years
| Voltage |
2002 |
2003 |
2004 |
2005 |
| 33 kV |
4.0 |
4.0 |
4.0 |
4.0 |
| 11kV |
4.0 |
4.0 |
4.0 |
4.0 |
| Total |
3.8 |
3.8 |
3.8 |
3.8 |
6 Faults (Class C) per 100 kilometres underground
| Voltage |
2000 |
1999 |
1998 |
1997 |
| 33 kV |
10.3 |
4.6 |
10.0 |
0.0 |
| 11kV |
6.1 |
0.0 |
7.4 |
5.9 |
| Total |
6.6 |
4.0 |
7.7 |
5.1 |
7 Faults (Class C) per 100 kilometres overhead
| Voltage |
2000 |
1999 |
1998 |
1997 |
| 33 kV |
9.1 |
0.0 |
7.7 |
10.1 |
| 11kV |
24.5 |
9.1 |
27.3 |
17.9 |
| Total |
15.6 |
4.8 |
16.7 |
14.2 |
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