✨ Electricity Reliability Performance Measures
2926 NEW ZEALAND GAZETTE No. 95
- The SAIFI for the total number of interruptions within each interruption class:
| Network or Generation Owner | Classification | Interruption per Connected Customer % |
|---|---|---|
| MainPower | Planned Shut-Down | 111.48 |
| Unplanned Interruption | 225.53 | |
| Trans Power | Planned Shut-Down | 40.93 |
| Unplanned Interruption | 92.10 | |
| Other | Other Interruptions | 32.30 |
| Unplanned Interruption | 00.00 |
-
The CAIDI for the total of all interruptions:
69.94
-
The CAIDI for the total number of interruptions within each interruption class:
| Network or Generation Owner | Classification | Minutes per Customer Interruption |
|---|---|---|
| MainPower | Planned Shut-Down | 111.94 |
| Unplanned Interruption | 64.00 | |
| Trans Power | Planned Shut-Down | 12.00 |
| Unplanned Interruption | 63.64 | |
| Other | Other Interruptions | 57.87 |
| Unplanned Interruption | 00.00 |
RULES FOR DATA ASSEMBLY PURSUANT TO REGULATION 16
-
Only interruptions arising from incidents at voltages of 3.3kV or greater which cause a loss of supply to customers are included.
-
The operation of a high voltage fuse supplying a three phase transformer is included.
-
An interruption to a customer is a loss of supply to a metered installation within the customer’s premises.
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The number of customers interrupted is determined by computer analysis of known customers at each distribution transformer affected.
-
Data is not subdivided into urban-rural density classification.
-
The interruption time is the time taken to restore supply to 100% of affected customers.
-
Interruptions to high voltage servicemain’s owned by customers is included.
-
Extreme climatic conditions and natural disasters introduces a small level of inaccuracy to the data.
-
Lines include both overhead lines and underground cable whether owned or leased by the company or owned by the customer.
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VUW Te Waharoa —
NZ Gazette 1995, No 95
NZLII —
NZ Gazette 1995, No 95
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MainPower New Zealand Ltd Reliability Performance Measures
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🏭 Trade, Customs & IndustryElectricity, Reliability, Performance Measures, Interruptions, Faults, SAIFI, CAIDI