Spectrum characteristics of transient earth voltages aroused by partial discharge in switchgear

被引：0

作者：

Electric Power Research Institute, Guangdong Power Grid Co., Ltd., Guangzhou ^{[1
]}

510080, China

不详 ^{[2
]}

200240, China

不详 ^{[3
]}

300384, China

机构：

[1] Electric Power Research Institute, Guangdong Power Grid Co., Ltd., Guangzhou

[2] Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai

[3] State Grid Tianjin Electric Power Research Institute, Tianjin

来源：

Gaodianya Jishu | / 11卷 / 3849-3857期

关键词：

Condition detection; Finite integral theory; Partial discharge; Spectrum; Switchgear; Transient earth voltages;

D O I：

10.13336/j.1003-6520.hve.2015.11.045

中图分类号：

学科分类号：

摘要：

In order to guide the frequency selection of transient earth voltages (TEV) detection device, we researched the frequency domain characteristics of TEV aroused by partial discharge in switchgears. The finite integration theory (FIT) was employed to simulate the influences of the switchgear size, surface aperture size and PD current direction on the spectrum of TEV signal. The simulation results show that the internal structure of switchgear has significant effects on the energy distribution of TEV signal. The TEV spectrum is closely related to the switchgear resonant frequency. The aperture size and PD current direction affect the strength of the TEV spectrum, but slightly affect the frequency distribution of TEV signal. © 2015, High Voltage Engineering Editorial Department of CEPRI. All right reserved.

引用

页码：3849 / 3857

页数：8

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