New Zealand Gazette – 2005 – No. 13

Page 303

✨ Electricity Reliability Performance Measures



18 JANUARY 2005

NEW ZEALAND GAZETTE, No. 13

303

6
Total Number Of Faults Per 100km Of Prescribed Voltage Underground Line

Nominal Voltage 2004 Powerco Number of Faults/100km 2003 Powerco Number of Faults/100km 2002 Powerco Number of Faults/100km 2001 Powerco Number of Faults/100km
110kV - - - -
66kV - - - -
33kV 2.95 0.58 - -
22kV - - - -
11kV 6.84 4.08 4.25 3.29
6.6kV - - - -
3.3kV - 3.78 3.83 2.94
Total 5.54 3.05 3.07 2.55

7
Total Number Of Faults Per 100km Of Prescribed Voltage Overhead Line

Nominal Voltage 2004 Powerco Number of Faults/100km 2003 Powerco Number of Faults/100km 2002 Powerco Number of Faults/100km 2001 Powerco Number of Faults/100km
110kV 3.33 9.32 - 3.59
66kV - - 4.17 -
33kV 10.72 6.80 - -
22kV 19.68 12.18 13.04 13.27
11kV 15.14 12.32 9.17 11.66
6.6kV 6.46 4.86 - 5.34
3.3kV - - 6.21 -
Total 14.45 11.56 8.64 10.67

8
SAIDI for total interruptions

11
SAIDI classified

Interruption Class 2004 Powerco SAIDI 2003 Powerco SAIDI 2002 Powerco SAIDI 2001 Powerco SAIDI
Class A - Transpower Planned 12.86 3.46 8.82 7.51
Class B - Distributor Planned 21.93 46.99 38.02 23.59
Class C - Distributor Unplanned 304.35 234.35 91.92 60.84
Class D - Transpower Unplanned 31.04 10.37 20.59 3.75
Class E - ECNZ Unplanned - 0.10 - -
Class F - Other Generator Unplanned - 0.18 0.22 -
Class G - Other Line Owner Unplanned - 0.22 - -
Class H - Other Line Owner Planned - - - -
Class I - Other Owner (Not in A - H) 0.24 - - -
Total 370.41 295.55 159.57 95.69

Note: 8 & 11. 2003 SAIDI, SAIFI and CAIDI are calculated using time weighted averages for all factors, i.e: using total Western plus 5/12 Eastern customer minutes, customer interruptions, and customers

9
SAIDI for the Following Financial Year

Interruption Class 2005 Powerco SAIDI 2004 Powerco SAIDI 2003 Powerco SAIDI 2002 Powerco SAIDI
Class B - Distributor Planned 20 29 26 25
Class C - Distributor Unplanned 130 101 73 75

10
SAIDI Targeted for the Following Financial Year and Subsequent 4 Financial Years

Interruption Class 2005 Powerco SAIDI 2006-2009 Powerco SAIDI
Class B - Distributor Planned 20 20
Class C - Distributor Unplanned 130 118

12
SAIFI for total interruptions

15
SAIFI classified

Interruption Class 2003 Powerco SAIFI 2003 Powerco SAIFI 2002 Powerco SAIFI 2001 Powerco SAIFI
Class A - Transpower Planned 0.029 0.033 0.038 0.030
Class B - Distributor Planned 0.114 0.249 0.192 0.150
Class C - Distributor Unplanned 3.258 2.930 2.045 1.420
Class D - Transpower Unplanned 0.385 0.257 0.275 0.230
Class E - ECNZ Unplanned - - - -
Class F - Other Generator Unplanned - 0.002 - -
Class G - Other Line Owner Unplanned - 0.002 0.005 -
Class H - Other Line Owner Planned - - - -
Class I - Other Owner (Not in A - H) - - - -
Total 3.787 3.473 2.555 1.840

Note: 12 & 15. 2003 SAIDI, SAIFI and CAIDI are calculated using time weighted averages for all factors, i.e: using total Western plus 5/12 Eastern customer minutes, customer interruptions, and customers



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Online Sources for this page:

VUW Te Waharoa — PDF NZ Gazette 2005, No 13


Gazette.govt.nz — PDF NZ Gazette 2005, No 13




✨ LLM interpretation of page content

🏭 Disclosure of Reliability Performance Measures Pursuant to Electricity Information Disclosure Requirements 2004 (continued from previous page)

🏭 Trade, Customs & Industry
Reliability Performance, Interruptions, Transpower, Distributor, ECNZ