✨ Energy Network Statistics
ALPINE ENERGY LIMITED LINES BUSINESS
Reliability and Performance Measures - Interruptions and Faults - 31 March 2007
Interruptions
| Interruptions |
Class |
2009/12 (Target) |
2008 (Target) |
2007 |
2006 |
2005 |
2004 |
| Number of Interruptions |
|
|
|
|
|
|
|
| Planned Interruptions - Transpower |
Class A |
|
|
1 |
1 |
1 |
|
| Planned Interruptions - Alpine |
Class B |
40 |
40 |
199 |
22 |
43 |
42 |
| Unplanned Interruptions - Alpine |
Class C |
90 |
90 |
91 |
83 |
81 |
90 |
| Unplanned Interruptions - Transpower |
Class D |
|
|
8 |
2 |
1 |
|
|
Class E - I |
0 |
0 |
0 |
0 |
0 |
0 |
| Total |
|
|
|
299 |
108 |
126 |
132 |
| Proportion of Total Class C Interruptions not restored: |
|
|
|
|
|
|
|
| Within 3 Hours |
|
10% |
10% |
19% |
20% |
21% |
27% |
| Within 24 Hours |
|
1% |
1% |
2% |
2% |
2% |
9% |
Faults
| Voltage |
2009/12 (Target) |
2008 (Target) |
2007 |
2006 |
2005 |
2004 |
Overall System
| Faults per 100 circuit kilometres of prescribed voltage electric line |
| 33kV |
| 22kV |
| 11kV |
| 6.6kV |
Overhead
| Faults per 100 circuit kilometres of prescribed voltage electric line |
| 33kV |
| 22kV |
| 11kV |
| 6.6kV |
Underground
| Faults per 100 circuit kilometres of prescribed voltage electric line |
| 33kV |
| 22kV |
| 11kV |
| 6.6kV |
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