Experimental Research on Partial Discharge Radiated UHF Signal Attenuation Characteristics in GIS

被引：0

作者：

Li, Tianhui ^{[1
]}

Rong, Mingzhe ^{[1
]}

Liu, Dingxin ^{[1
]}

Wang, Xiaohua ^{[1
]}

Wu, Junhui ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Elect Engn, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

[2] Pinggao Grp CoLtd, Pingdingshan 467001, Peoples R China

来源：

2013 IEEE INTERNATIONAL CONFERENCE OF IEEE REGION 10 (TENCON) | 2013年

关键词：

Gas insulated switchgear (GIS); partial discharge (PD); UHF; propagation characteristic; electromagnetic wave; ELECTROMAGNETIC-WAVE; SIMULATION;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

For detecting partial discharge (PD) phenomenon in gas insulated switchgear (GIS), ultra-high-frequency (UHF) method, which detects electromagnetic wave (EM wave) in UHF band with good immunity to noise, has been widely employed to avoid insulation accidents. In order to deeply understand the propagation process of EM wave and improve the utilization of the UHF method, it is necessary to investigate the attenuation characteristics of UHF signal from broadband PD sensor. In this research, by using the self-designed planar equiangular spiral antenna, the output UHF signal is detected and analyzed experimentally in a 252 kV GIS with L-shaped structure (LS) and disconnecting switch (DS) tank. When DS is closed and is open, the output signal is measured under two applied voltage levels individually in the test. And the results are mainly investigated in detail by time, statistics and frequency analysis. The propagation rules of the peak to peak value (Vpp) and transmission rate of the UHF signal are summarized. This research provides some referential significance towards the rational use of UHF method and better implementation of PD detection.

引用

页数：4

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