NDLI: Thirty-Six Years of Service Experience with a National Population of Gas-Insulated Substations

Content Provider	IEEE Xplore Digital Library
Author	Istad, M. Runde, M.
Copyright Year	1986
Abstract	This paper shows the result of a failure survey including the entire population of gas-insulated substations in the Norwegian power transmission system. The survey comprises the complete service experience up to now-nearly 12000 circuit-breaker years. Information about 180 failures has been recorded during 36 years: 77 internal flashovers/arcing faults have occurred, four of which burned through the encapsulation and another six caused the pressure-relief devices to operate. No severe injuries have been recorded. The overall failure rates and their causes are comparable to the findings of other reliability surveys, although the occurrence of severe arcing faults appears to be clearly higher than noticed elsewhere. The 300-kV and 420-kV gas-insulated substations put into service around 1980 have a significant and negative influence on the overall failure rate, whereas a large number of 145-kV substations installed since the early 1990s have proven very reliable. Even though a large portion of the population is above or approaching the designed service life of 30 years, no significant aging problems could be revealed with a basis in the failure statistics.
Sponsorship	IEEE Power Engineering Society
Starting Page	2448
Ending Page	2454
Page Count	7
File Size	283059
File Format	PDF
ISSN	08858977
Volume Number	25
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Substations Geographic Information Systems Statistics Circuit faults Manufacturing Databases Power transmission Flashover Encapsulation Injuries switchgear Aging end of life failure analysis gas-insulated substations (GIS) reliability sulfur hexafluoride
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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