New Zealand Gazette – 1997 – No. 165

Page 3931

✨ Energy Reliability Statistics

26 NOVEMBER NEW ZEALAND GAZETTE 3931

TRANSPOWER NEW ZEALAND LIMITED GROUP

The Electricity (Information Disclosure) Regulations 1994
(For 12 Months ending 30 June 1997, 30 June 1996, 30 June 1995, and 30 June 1994)

Part V
Reliability Performance Measures To Be Disclosed
By Trans Power
(Disclosure Under Regulation 17)

	1996-97	1995-96	1994-95	1993-94
1. Total number of unplanned interruptions*	164	229	184	234
Resulting from 92 loss of supply incidents in 1996-97
2. Electricity customer interruptions in system minutes...	13.6	12.2	19.5	15.1
planned	2.1	5.8	4.4	5.6
unplanned	11.5	6.4	15.1	9.5
3. Underlying electricity customer interruptions in system minutes...	6.9	7.1	14.1	10.3
Underlying interruptions are those interruptions of 1 system minute or less duration
planned	2.1	3.1	2.9	4.3
unplanned	4.8	4.0	11.2	6.0
4. Average supply reliability...%	99.9959	99.9963	99.9942	99.9956
Measured by the energy supplied divided by the sum of the energy supplied and not supplied
5. Uneconomic generation due to planned and unplanned transmission system unavailability...%	0.55	0.81	0.68	0.81
Uneconomic generation relates to the amount of electricity generated from any source other than the most economic source.
6. Uneconomic generation due to HVDC system unavailability...%	0.47	0.73	0.60	0.69
7. Uneconomic generation due to unplanned transmission system unavailability...%	0.12	0.22	0.15	0.07
8. Planned interruption restoration performance...%	72	80.5	92.5	76.6
9. Unplanned interruption response...%	100	99.1	100	99.6

The information compiled using estimated information includes Part V sections 2,3,4,5,6 and 7.

The methodology used to calculate the estimated information is documented and available from Trans Power upon request.

Where two supply voltages, or two customers, at the same station are both interrupted this is counted as two interruptions.

PDF embedding disabled (Crown copyright)

View this page online at:

VUW Te Waharoa — NZ Gazette 1997, No 165

NZLII — NZ Gazette 1997, No 165

Parliament House (depicted) was completed in 1918 and remains the primary seat of Parliament.

✨ LLM interpretation of page content

🏭 Energy Delivery Efficiency Performance Measures and Statistics (continued from previous page)

Domain🏭 Trade, Customs & Industry
KeywordsEnergy efficiency, Transmission losses, Capacity utilisation, System length, Circuit length, Transformer capacity, Maximum demand, Electricity supply, Electricity conveyance, Customers

As the Gazette has been published for more than 185 years, copyright status depends on the publication date of each issue:

1840–1925 (Public Domain): Issues of the New Zealand Gazette and Provincial Gazettes from this period are in the public domain, as the term of Crown copyright (100 years) has expired. Mechanical reproductions (e.g., scanned PDFs) of these public domain documents do not attract new copyright.
1926–1999 (Crown Copyright): Issues from this period remain subject to Crown copyright. Usage of these issues in this project is "Fair Dealing" for research purposes and consistent with the spirit of the open-access principles championed by NZGOAL, ie, "The default licensing position under ... NZGOAL is the Creative Commons Attribution 4.0 International licence ... [t]o the greatest extent possible, agencies should apply this licence to copyright material on their websites"
2000–Present (CC-BY 3.0 NZ): Gazette issues published on gazette.govt.nz are Crown copyright but are explicitly licensed by the Department of Internal Affairs under the Creative Commons Attribution 3.0 New Zealand licence (CC-BY 3.0 NZ). This project redistributes this content in accordance with those terms.

Nothing in this project is intended to infringe copyright, trademark law or personal privacy. Please contact me immediately if you have any concerns.

Third-Party Content

Where third-party content (e.g., notices submitted by external organisations) is identified within the Gazette, users should satisfy themselves regarding the copyright status of that specific content, as it may be subject to different ownership terms than the Gazette itself.

Sources and Attribution

NZ Gazette Sources

The primary sources for the issues of the NZ Gazette indexed by this project are:

New Zealand Gazette Archive, provided by Victoria University Library, copyright 2008 LexisNexis NZ Limited, Crown Copyright of New Zealand Gazette Office
- Issues from 1841-2008, including the New Munster, New Ulster, and Provincial Gazettes
New Zealand Gazettes by New Zealand Legal Information Institute (note: "NZLII is not the copyright owner in the source documents published on NZLII")
- Issues from 1913-1999
Gazette.govt.nz, Crown copyright / licensed by the Department of Internal Affairs under CC-BY 3.0 NZ
- Issues from 2000-2017

Additional Sources

Wellington City Recollect have made available a comprehensive and excellent-quality scan of the Wellington Provincial Gazette which was used to fill in a number of issues missing from Victoria University's Gazette Archive; in particular, all 1856 issues, issues 22-34 for 1864 and issues 9-19 for 1870.
27 issues of The New Zealand Advertiser and Bay of Islands Gazette (1840) were sourced from Papers Past (public domain).
Gazette Extraordinary No. 1 (1840), held at the Alexander Turnbull Library, Wellington, New Zealand. Imaged by Luke Howison at the National Library reading rooms; PDF released into the public domain.

PDF Icon

The PDF PDF Icon was made by Good Ware, CC BY-SA 4.0.

Masthead

The logo in the header is an edited version of “Winning Coat of Arms Competition Entry, 1908” by Archives New Zealand, CC BY 2.0 (found via Wikipedia).

Who made this?

I'm Luke Howison, a freelance web developer with an interest in genealogy. I have created several websites for genealogical research, such as NZ Ancestor Search Helper.