New Zealand Gazette – 2004 – No. 3

Page 72

✨ Electricity Reliability Performance



72

NEW ZEALAND GAZETTE

No. 3

ISSN 0111-5650

Price $5.00 (inc. G.S.T.)

B. RELIABILITY PERFORMANCE MEASURES (1999 REGULATIONS)

B1. Total number of interruptions, together with a breakdown of that total according to interruption class.

Interruption Class Number of Interruptions
2003 2002 2001 2000
------------------------------------ ----------------------- ------- ------- -------
MainPower
Planned Shut-Down (Class B) 167 154 94 106
Unplanned Interruption (Class C) 102 74 191 189
Trans Power
Planned Shut-Down (Class A) 3 3 - 1
Unplanned Interruption (Class D) 2 - - 1
Generation
Unplanned Interruption (Class E) - - - -
Generation Other
Unplanned Interruption (Class F) - - - -
Other
Other Interruptions (Class G) - - - -
Unplanned Interruption (Class G) - - - -
Total Interruptions 274 231 285 297

B2. The total number of faults per 100 circuit kilometres of prescribed voltage electric line.

Nominal Voltage Faults per 100 km Total
2003 2002 2001 2000
----------------- ----------------------- ------- ------- -------
33 kV 0.348 1.40 1.78 2.04
11 kV 3.23 2.09 5.52 5.92
TOTAL 2.97 2.03 5.24 5.51

B3. 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
2003 2002 2001 2000
----------------- ----------------------------- ------- ------- -------
33 kV - - - -
11 kV - 3.15 5.30 7.89
TOTAL - 3.08 5.19 7.69

B4. 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
2003 2002 2001 2000
----------------- -------------------------- ------- ------- -------
33 kV 0.35 1.41 1.79 0.75
11 kV 3.34 2.06 5.53 5.86
TOTAL 3.06 2.01 5.24 5.45

B5. The SAIDI for the total of interruptions:

2003 2002 2001 2000
284.35 213.73 151.96 116.94

B6. The SAIDI for the total number of interruptions within each interruption class:

Network or Generation Owner Classification Minutes per Connected Customer
2003 2002 2001 2000
----------------------------- --------------------------------- ---------------------------------- ------- ------- -------
MainPower Planned Shut-Down (Class B) 60.83 108.62 60.48 22.06
Unplanned Interruption (Class C) 77.87 52.12 91.48 71.55
Trans Power Planned Shut-Down (Class A) 74.38 52.98 - 22.27
Unplanned Interruption (Class D) 71.27 - - 1.06
Generation Unplanned Interruption (Class E) - - - -
Generation Other Unplanned Interruption (Class F) - - - -
Other Other Interruptions (Class G) - - - -
Unplanned Interruption (Class G) - - - -

B7. The SAIFI for the total number of interruptions:

2003 2002 2001 2000
2.70 1.45 2.08 1.77

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DEPARTMENT OF INTERNAL AFFAIRS
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Online Sources for this page:

VUW Te Waharoa — PDF NZ Gazette 2004, No 3


Gazette.govt.nz — PDF NZ Gazette 2004, No 3




✨ LLM interpretation of page content

🏭 MainPower New Zealand Limited Information Disclosure Update (continued from previous page)

🏭 Trade, Customs & Industry
Electricity, Reliability, Performance Measures, Interruptions, Faults, SAIDI, SAIFI, MainPower, Trans Power