雷电——工频联合加压下1100kV GIS壳体暂态电位分布及接地方式的研究  

Research on Transient Enclosure Potential Distribution and Grounding Mode of 1100kV GIS Under Lightning Impulse and Power Frequency Combined Withstand Voltages

作　　者：王安琪 陈丽安 王文勇 陈天翔 WANG Anqi;CHEN Li’an;WANG Wenyong;CHEN Tianxiang(School of Electrical Engineering and Automation,Xiamen University of Technology,Fujian Xiamen 361024,China;Xiamen ABB China Co.,Ltd.,Xiamen Branch,Fujian Xiamen 361101,China;Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]厦门理工学院电气工程与自动化学院,福建厦门361024 [2]ABB中国有限公司厦门分公司,福建厦门361101 [3]成都理工大学,成都610059

出　　处：《高压电器》2020年第7期29-35,共7页High Voltage Apparatus

摘　　要：为了研究1100 kV气体绝缘金属封闭开关设备在雷电—工频联合加压试验过程中由短时燃弧引发的壳体暂态电位升高的电位分布情况,文中采用导体传输线理论对雷电—工频联合加压试验回路各组成部分以集中或分布参数等效,特别地将壳体绝缘法兰等效成串联电容,建立了试验回路的暂态模型并进行仿真。将仿真计算结果与试验数据进行对比,验证了模型的准确性;分析了1100 kV GIS试验回路壳体暂态电位分布规律并且对接地线型式和接地方式进行了合理选择,最终证实铜箔接地对暂态电压幅值和频率的抑制具有良好效果。To study potential distribution of 1100 kV gas insulated switchgear after short arc ignition which leads to transient enclosure potential rise under lightning impulse and power frequency combined withstand voltage,each component of test loop will be equivalent to be centralized or distributed parameters for the research adopts the transmission line theory.Especially insulating flange should be considered to be series capacitor,so that the whole transient model can be established.The computed result of the simulation model is compared with the test data to verify the accuracy of the model establishment,and gain the distribution law of transient enclosure voltage in the test loop as well as choose the type of grounding line and grounding mode properly.Finally the research confirmed the superior performance of copper foil grounding to suppress amplitude and frequency of transient voltage.

关 键 词：1100kV GIS 联合加压 暂态地电位升高 暂态模型 接地方式 

分 类 号：TM862[电气工程—高电压与绝缘技术]