β¨ Electricity Reliability Statistics
16 AUGUST 2005
NEW ZEALAND GAZETTE, No. 126
3059
Requirement 21 (3)
1
Total number of interruptions, together with a breakdown of that total according to interruption class.
| Interruption Class | Number of Interruptions |
|---|---|
| 2005 | |
| MainPower | |
| Planned Shut-Down (Class B) | 236 |
| Unplanned Interruption (Class C) | 58 |
| Trans Power | |
| Planned Shut-Down (Class A) | 1 |
| Unplanned Interruption (Class D) | 2 |
| Generation | |
| Unplanned Interruption (Class E) | - |
| Generation Other | |
| Unplanned Interruption (Class F) | - |
| Other | |
| Other Interruptions (Class G) | - |
| Unplanned Interruption (Class G) | - |
| Total Interruptions | 297 |
2
The total number of faults per 100 circuit kilometres of prescribed voltage electric line.
| Nominal Voltage | Faults per 100 km Total |
|---|---|
| 2005 | |
| 33 kV | 3.24 |
| 11 kV | 1.48 |
| TOTAL | 1.66 |
3
The total number of faults per 100 circuit kilometres of Underground prescribed voltage electric line, together with a breakdown of that total according to different nominal line voltages.
| Nominal Voltage | Faults per 100 km Underground |
|---|---|
| 2005 | |
| 33 kV | 3.09 |
| 11 kV | - |
| TOTAL | 3.03 |
4
The total number of faults per 100 circuit kilometres of Overhead prescribed voltage electric line, together with a breakdown of that total according to different nominal line voltages.
| Nominal Voltage | Faults per 100 km Overhead |
|---|---|
| 2005 | |
| 33 kV | 3.27 |
| 11 kV | 1.44 |
| TOTAL | 1.60 |
5
The SAIDI for the total of interruptions:
| 2005 | 2004 | 2003 | 2002 | |
|---|---|---|---|---|
| SAIDI | 115.5685 | 99.64 | 284.35 | 213.73 |
6
The SAIDI for the total number of interruptions within each interruption class:
| Network or Generation Owner | Classification | Minutes per Connected Customer |
|---|---|---|
| 2005 | ||
| MainPower | Planned Shut-Down (Class B) | 49.7782 |
| Unplanned Interruption (Class C) | 49.5696 | |
| Trans Power | Planned Shut-Down (Class A) | 13.2698 |
| Unplanned Interruption (Class D) | 2.9509 | |
| Generation | Unplanned Interruption (Class E) | - |
| Generation Other | Unplanned Interruption (Class F) | - |
| Other | Other Interruptions (Class G) | - |
| Unplanned Interruption (Class G) | - |
7
The SAIFI for the total number of interruptions:
| 2005 | 2004 | 2003 | 2002 | |
|---|---|---|---|---|
| SAIFI | 1.1657 | 1.21 | 2.70 | 1.45 |
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Online Sources for this page:
VUW Te Waharoa —
NZ Gazette 2005, No 126
Gazette.govt.nz —
NZ Gazette 2005, No 126
β¨ LLM interpretation of page content
π
MainPower New Zealand Ltd Reliability Performance Measures
(continued from previous page)
π Trade, Customs & IndustryElectricity reliability, Interruption statistics, Fault rates, Performance targets, Energy distribution