New Zealand Gazette – 2005 – No. 10

Page 231

✨ Electricity Reliability Performance Measures



17 JANUARY 2005
NEW ZEALAND GAZETTE, No. 10
231

Requirement 21 (3)

  1. Total number of interruptions, together with a breakdown of that total according to interruption class.
Interruption Class Number of Interruptions
2004 2003 2002 2001
MainPower Planned Shut-Down (Class B) 212 167 154 94
Unplanned Interruption (Class C) 82 102 74 191
Trans Power Planned Shut-Down (Class A) 0 3 3 -
Unplanned Interruption (Class D) 1 2 - -
Generation Unplanned Interruption (Class E) 0 - - -
Generation Other Unplanned Interruption (Class F) 0 - - -
Other Other Interruptions (Class G) 0 - - -
Unplanned Interruption (Class G) 0 - - -
Total Interruptions 295 274 231 285
  1. The total number of faults per 100 circuit kilometres of prescribed voltage electric line.
Nominal Voltage Faults per 100 km Total
2004 2003 2002 2001
33 kV 4.00 0.35 1.40 1.78
11 kV 2.01 3.23 2.09 5.52
TOTAL 2.18 2.97 2.03 5.24
  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.
Nominal Voltage Faults per 100 km Underground
2004 2003 2002 2001
33 kV - - - -
11 kV 1.45 - 3.15 5.30
TOTAL 1.42 - 3.08 5.19
  1. 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
2004 2003 2002 2001
33 kV 4.03 0.35 1.41 1.79
11 kV 2.03 3.34 2.06 5.53
TOTAL 2.19 3.06 2.01 5.24

  1. The SAIDI for the total of interruptions: 99.64 284.35 213.73 151.96

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

Network or Generation Owner Classification Minutes per Connected Customer
2004 2003 2002 2001
MainPower Planned Shut-Down (Class B) 48.59 60.83 108.62 60.48
Unplanned Interruption (Class C) 45.44 77.87 52.12 91.48
Trans Power Planned Shut-Down (Class A) 0.00 74.38 52.98 -
Unplanned Interruption (Class D) 6.12 71.27 - -
Generation Unplanned Interruption (Class E) - - - -
Generation Other Unplanned Interruption (Class F) - - - -
Other Other Interruptions (Class G) - - - -
Unplanned Interruption (Class G) - - - -
  1. The SAIFI for the total number of interruptions: 1.21 2.70 1.45 2.08


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Online Sources for this page:

VUW Te Waharoa — PDF NZ Gazette 2005, No 10


Gazette.govt.nz — PDF NZ Gazette 2005, No 10




✨ LLM interpretation of page content

🏭 Disclosure of Reliability Performance Measures (continued from previous page)

🏭 Trade, Customs & Industry
Reliability Performance, Interruptions, Electricity, MainPower, TransPower, ECNZ