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Practical application of on-line partial discharge monitoring technique on 500kV shunt reactor

Practical application of on-line partial discharge monitoring technique on 500kV shunt reactor
Practical application of on-line partial discharge monitoring technique on 500kV shunt reactor
Considering the damage mechanism of oil-impregnated paper insulation in power transformers, shunt reactors and other high voltage electrical apparatus caused by partial discharge, a concept of “destructive partial discharge” is introduced in this paper. The intensity of this discharge is regarded as several thousands pico-coulomb (pC) and may cause the insulation a fatal damage. An oil-paper insulation is usually able to withstand this type of partial discharge for a period of time prior to failure. This provides engineers a time window to detect it. This paper describes an on-line partial discharge monitoring system for 500kV shunt reactors. The commission results from 3 single-phase shunt reactors either connected or disconnected to the grid showed that the on-line partial discharge detecting system has a high noise immunising ability. Two years later after the installation, a pre-warning signal was received from one shunt reactor indicating the existence of an intermittent discharge. The acoustic emission system located its position at the low end of the high voltage bushing in the oil. Dissolved gasses analysis (DGA) in the oil suggested the presence of partial discharge, as acetylene (C2H2) was as high as 20ppm. PD activity was further confirmed by a physical examination on the reactor.
Partial discharge, on-line condition monitoring, high voltage reactor
90-77017-79-8
CD-ROM
Fu, M
22d474b8-9c19-4ccb-9e64-6087ffe0941d
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Wang, S
5604d9c5-fcc7-4469-8f0f-b0fdaa7e9adf
Fu, M
22d474b8-9c19-4ccb-9e64-6087ffe0941d
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Wang, S
5604d9c5-fcc7-4469-8f0f-b0fdaa7e9adf

Fu, M, Chen, G and Wang, S (2003) Practical application of on-line partial discharge monitoring technique on 500kV shunt reactor. 13th International Symposium on High Voltage Engineering, Delft, Netherlands. 24 - 28 Aug 2003. CD-ROM .

Record type: Conference or Workshop Item (Paper)

Abstract

Considering the damage mechanism of oil-impregnated paper insulation in power transformers, shunt reactors and other high voltage electrical apparatus caused by partial discharge, a concept of “destructive partial discharge” is introduced in this paper. The intensity of this discharge is regarded as several thousands pico-coulomb (pC) and may cause the insulation a fatal damage. An oil-paper insulation is usually able to withstand this type of partial discharge for a period of time prior to failure. This provides engineers a time window to detect it. This paper describes an on-line partial discharge monitoring system for 500kV shunt reactors. The commission results from 3 single-phase shunt reactors either connected or disconnected to the grid showed that the on-line partial discharge detecting system has a high noise immunising ability. Two years later after the installation, a pre-warning signal was received from one shunt reactor indicating the existence of an intermittent discharge. The acoustic emission system located its position at the low end of the high voltage bushing in the oil. Dissolved gasses analysis (DGA) in the oil suggested the presence of partial discharge, as acetylene (C2H2) was as high as 20ppm. PD activity was further confirmed by a physical examination on the reactor.

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More information

Published date: 2003
Additional Information: Event Dates: August 25 - 29, 2003
Venue - Dates: 13th International Symposium on High Voltage Engineering, Delft, Netherlands, 2003-08-24 - 2003-08-28
Keywords: Partial discharge, on-line condition monitoring, high voltage reactor
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 261704
URI: http://eprints.soton.ac.uk/id/eprint/261704
ISBN: 90-77017-79-8
PURE UUID: a5bb12c4-7abc-48d9-b0e2-5a759f5f355d

Catalogue record

Date deposited: 19 Dec 2005
Last modified: 23 Sep 2020 16:38

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Contributors

Author: M Fu
Author: G Chen
Author: S Wang

University divisions

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