New Zealand Gazette – 2002 – No. 173

Page 4389

✨ Energy Delivery Performance Measures



29 NOVEMBER

NEW ZEALAND GAZETTE

4389

TRANSPower NEW ZEALAND LIMITED LINES BUSINESS

ENERGY DELIVERY EFFICIENCY AND RELIABILITY
PERFORMANCE MEASURES AND STATISTICS

FOR THE YEAR ENDED 30 JUNE 2002

Part 4

Energy Delivery Efficiency Performance Measures and Statistics (Disclosure under Regulation 21) 2001/02 2000/01 1999/00 1998/99
1. Energy delivery efficiency performance measures
(a) Load factor % 67.09 68.67 69.08 68.78
Electrical energy entering the transmission system as percentage of maximum demand times hours per year@
(b) Loss ratio % 2.90 4.65 3.97 3.83
Transmission losses as percentage of energy entering the system @
(c) Capacity utilisation % 70.71 71.00 63.48 65.11
Maximum demand as percentage of total transformer capacity # @
2. Statistics
(a) System length, broken down by voltage
Total, @ km 17,145 17,288 17,542 17,640
350 kV (HVDC) km 611 611 611 611
270 kV (HVDC) km 611 611 611 611
0 kV (HVDC earth electrode) km 31 31 31 31
220 kV (HVAC) km 8,357 8,357 8,365 8,365
110 kV (HVAC) km 6,108 6,134 6,212 6,270
66/50/33/11 kV km 1,428 1,545 1,712 1,752
(b) Circuit length of overhead electric lines, broken down by voltage . @
Total km 17,060 17,203 17,457 17,555
350 kV (HVDC) km 571 571 571 571
270 kV (HVDC) km 571 571 571 571
0 kV (HVDC earth electrode) km 31 31 31 31
220 kV (HVAC) km 8,357 8,357 8,365 8,365
110 kV (HVAC) km 6,103 6,129 6,207 6,265
66/50/33/11 kV km 1,428 1,545 1,712 1,752
NB: HVDC link submarine power cables measure approximately 80km. Broken down by voltage
350 kV (HVDC) km 40 40 40 40
270 kV (HVDC) km 40 40 40 40
(c) Total circuit length of underground electric lines (110 kV HVAC) km 5 5 5 5
(d) Transformer capacity (kilovolt amperes)* # kVA 8.59x10⁶ 8.53x10⁶ 8.43x10⁶ 8.23x10⁶
(e) Maximum demand (kilowatts) * @ kW 6.07x10⁶ 6.05x10⁶ 5.83x10⁶ 5.67x10⁶
(f) Total electricity supplied from the system (kilowatt hours) * @ kWh 34.66x10⁹ 34.72x10⁹ 33.88x10⁹ 32.86x10⁹
(g) Total electricity conveyed through the system (kilowatt hours) * @ kWh 35.70x10⁹ 36.42x10⁹ 35.28x10⁹ 34.17x10⁹
(h) Total connected customers 49 50 54 55
  • to 2 decimal places only, higher accuracy used in calculations

    Installed transformer capacity based on ONAN ratings. Earlier years data updated on same basis.

    @ 2000/01 figures updated with revised data.



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Online Sources for this page:

VUW Te Waharoa — PDF NZ Gazette 2002, No 173


Gazette.govt.nz — PDF NZ Gazette 2002, No 173




✨ LLM interpretation of page content

🏭 Certificate by Directors of Financial Statements, Performance Measures, and Statistics Disclosed by Transpower New Zealand Limited (continued from previous page)

🏭 Trade, Customs & Industry
15 November 2002
Financial Statements, Performance Measures, Statistics, Electricity Disclosure, Transpower