Experimental Research of Electromagnetic Interference Caused by Disconnector Operation in Gas Insulated Switchgear

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Yang, Tao^1 ; Huang, Liang^1 ; Wu, Jianrong^1 ; Huang, Junkai^1 ; Pang, Wenlong^2 ; Wu, Xixiu^2

Electric Power Research Institute of Guizhou Power Grid Co., Ltd., Guiyang, China^1

Wuhan University of Technology, Wuhan, China^2

关键词: Disconnecting switch;    Electric field strength;    Electromagnetic circuits;    Electromagnetic waveforms;    Experimental research;    Gas insulated switchgears;    Resistive impedances;    Switching conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012096/pdf
DOI  :  10.1088/1757-899X/486/1/012096

来源: IOP

【 摘 要 】

In order to intensively study the exterior transient electromagnetic interference characteristics caused by disconnector operation in Gas Insulated Switchgear, experimental research of exterior transient electromagnetic interference under switching conditions is performed in this paper. Based on 330kV GIS test platform, with the method of resistive impedance divider, TEV is measured with Pintech P6039A high-voltage probe and Yokogawa DLM2054 oscilloscope by using resistor voltage divider GIS exterior radiation electromagnetic circuit is also established using antenna theories, biconical antenna and spectrum analyzer etc. The exterior transient electromagnetic interference waveform and characteristics are precisely measured. By the contrast analysis of TEV and radiation electromagnetic waveforms, results can be summarized as followed: The TEV waveform caused by opening and closing of disconnecting switch is front sparse and rear dense, and its amplitude is low at the fore and high over the back; The electric field strength is weaker compared to the electromagnetic compatibility of normal substation.