特高压变电站1100kV GIS现场冲击耐压试验方法

Method of On-site Lightning Impulse Tests of 1 100 kV GIS in UHV Substation

开展GIS现场冲击耐压试验有利于发现设备运输和现场安装过程中产生的内部缺陷和隐患。浙南站1 100 kV GIS现场冲击耐压试验为世界首次开展,文中介绍了浙南站1 100 kV GIS现场冲击耐压试验参数的确定、试验装置的结构和参数以及等效回路的计算过程,形成了浙南站现场冲击耐压试验方法。使用该试验方案在浙南站成功开展了现场冲击耐压试验,现场试验未发生放电故障,该试验方法将为后续超特高压工程开展相关试验提供技术依据和示范作用。

On-site lightning impulse test is beneficial to find the internal defects and the hidden troubles. On-site lightning impulse test for Zhe＇nan 1 100 kV GIS is the first time in the world. Test parameters, the structure of test device and the calculation process of equivalent circuit are introduced in this paper. Method of on-site lightning impulse conducted in Zhe＇nan Substation technical basis and demonstration test has been developed, On-site lightning impulse test is successfully with no occurrence of discharge accident. This test method will provide for subsequent UHV projects.