New Zealand Gazette – 2008 – No. 38

Page 885

✨ Electricity Reliability Performance Measures



26 FEBRUARY 2008 NEW ZEALAND GAZETTE, No. 38

  1. 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.

  2. 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 Lines Faults per 100 km Cable Faults per 100 km Total Faults per 100 km
33 kV 1.96 0.00 1.94
11 kV 6.04 3.18 5.86
TOTALS 5.68 3.13 5.56
Faults/100km Faults/100km 33kV Faults/100km 11kV
Target 31/03/08 2.09 0.97 2.18
31/03/2008 Avg forecast 2.09 0.97 2.18
31/03/2009 Avg forecast 2.00 0.65 2.12
31/03/2010 Avg forecast 2.00 0.65 2.12
31/03/2011 Avg forecast 1.92 0.65 2.03
31/03/2012 Avg forecast 1.92 0.65 2.03

8, 12, 16. The SAIDI, SAIFI, CAIDI for the total number of interruptions.

9, 13, 17. SAIDI targets for the following financial year for-

(a) Planned interruptions by the line owner (Class B); and

(b) Unplanned interruptions originating within the works of the line owner (Class C).

10, 14, 18. Average SAIDI targets for the following financial year and the subsequent 4 financial years for each of-

(a) Planned interruptions by the line owner (Class B); and

(b) Unplanned interruptions originating within the works of the line owner (Class C).

11, 15, 19. The SAIDI for the total number of interruptions within each interruption class (includes 12 June 2006 Canterbury snow storm).

| NETWORK OR GENERATION OWNER | Disc Class | CLASSIFICATION OF INTERRUPTIONS | SAIDI | SAIFI | CAIDI |
| | | | Numerator (Cust-min) | Result (min/Conn Cust) | Numerator (Cust-int) | Result (int/Conn Cust) | Result (min/Cust int) |
|-----------------------------|------------|------------------------------------|-----------------------|-------------------------|-----------------------|------------------------|------------------------|
| MainPower | B | Planned Shut-downs | 993,808 | 31.661 | 7,005 | 0.223 | 141.871 |
| | C + G | Unplanned Interruptions | 5,821,235 | 185.454 | 49,070 | 1.531 | 121.099 |
| | | Subtotal | 6,815,033 | 217.115 | 55,075 | 1.755 | 123.741 |
| Trans Power | A | Planned Shut-downs | 0 | 0.164 | 1,290 | 0.041 | 4.000 |
| | D | Unplanned Interruptions | 604,990 | 19.255 | 14,972 | 0.477 | 40.368 |
| | | Subtotal | 609,550 | 19.419 | 16,262 | 0.518 | 37.483 |
| Other | G | Other Interruptions | 0 | 0 | 0 | 0 | 0 |
| ECNZ | E | Unplanned Interruptions | 0 | 0 | 0 | 0 | 0 |
| | | Subtotal | 0 | 0 | 0 | 0 | 0 |
| | | TOTAL | 7,424,583 | 236.535 | 71,337 | 2.273 | 104.077 |

Common Denominator = No. of Cust. 31,389

11, 15, 19. The SAIDI for the total number of interruptions within each interruption class (excludes 12 June 2006 Canterbury snow storm).

| MainPower | C + G | Unplanned interruptions | 1,873,111 | 59.674 | 32,351 | 1.032 | 57.846 |
| | | TOTAL | 3,476,469 | 110.754 | 55,648 | 1.773 | 62.467 |



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Online Sources for this page:

VUW Te Waharoa — PDF NZ Gazette 2008, No 38


Gazette.govt.nz — PDF NZ Gazette 2008, No 38




✨ LLM interpretation of page content

🏭 Disclosure of Reliability Performance Measures for MainPower New Zealand Limited (continued from previous page)

🏭 Trade, Customs & Industry
Electricity, Reliability, Interruptions, Performance Measures, MainPower New Zealand Limited, SAIDI, SAIFI, CAIDI