Experience with Partial Discharge Detection at High Voltage Gas Insulated Switchgear by Ultra High Frequency (UHF) Method

被引：0
|
作者：
Chan, L. K. [1 ]
So, K. L. [1 ]
Chow, K. K. [1 ]
机构：
[1] CLP Power Hong Kong Ltd, Hong Kong, Hong Kong, Peoples R China
来源：
2013 IEEE PES ASIA-PACIFIC POWER AND ENERGY ENGINEERING CONFERENCE (APPEEC) | 2013年
关键词：
Gas insulation; Switchgear; Condition monitoring; Partial discharges; UHF measurements; High-voltage techniques;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The paper reviews the experience of Partial Discharge (PD) detection at 400kV and 132kV Gas Insulated Switchgear (GIS) by UHF method. It outlines the principle of UHF signal emission from possible PD inside HV GIS and relevant detection methods applied. Two real cases with detected incipient fault modes at 400kV and 132kV GIS are being discussed. Moreover, the shortcoming of UHF detection at metallic shielded GIS is identified and feasible solving through detection points at nonmetallic secondary wiring terminals of Current Transformer (CT) and Voltage Transformer (VT) is described.
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页数：4
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