Reliability estimation of high voltage SF₆ circuit breakers by statistical analysis on the basis of the field data

authored by

X. Zhang, Ernst Gockenbach, Zhaolin Liu, Haibo Chen, Linghui Yang

Abstract

In order to estimate the reliability of high voltage SF₆ circuit breakers, it is necessary to develop a statistical approach which can provide the failure probability, the failure rate and the remaining lifetime for the equipment and components. Useful information about the failure occurrences of 550 kV SF₆ circuit breakers is collected from the East China Grid with the operating history. Even if the statistical survey is linked to data records of the unfailed components and maintenance measures, the statistical approach can accurately estimate the reliability of the components assembled in the circuit breakers. It is demonstrated by individual characteristics of 550 kV SF₆ circuit breakers such as N₂ leakage, SF₆ leakage, overheat of primary terminal and defect of protection- and control system, etc. that the statistical approach is able to assess the reliability of equipment and components with reasonable and accurate results.

Organisation(s)

High Voltage Engineering and Asset Management Section (Schering Institute)

External Organisation(s)

East China Grid (ECGC)
East China Electrical Test and Research Institute

Type

Article

Journal

Electric power systems research

Volume

103

Pages

105-113

No. of pages

9

ISSN

0378-7796

Publication date

14.06.2013

Publication status

E-pub ahead of print

Peer reviewed

Yes

ASJC Scopus subject areas

Energy Engineering and Power Technology, Electrical and Electronic Engineering

Electronic version(s)

https://doi.org/10.1016/j.epsr.2013.04.014 (Access: Closed)