10kV不接地系统电容电流测试研究  

Discussion on Capacitive Current Testing for 10kV Non-grounded System

作　　者：肖明[1] 宋锐[1] 李绚绚[2] 马勇飞[1] 张杰[1] 

机构地区：[1]国网青海省电力公司电力科学研究院,青海西宁810000 [2]国网青海省电力公司经济技术研究院,青海西宁810000

出　　处：《电气开关》2016年第2期51-53,共3页Electric Switchgear

摘　　要：介绍了一种基于中性点信号注入的电容电流测试法来测量中性点不接地系统电容电流;以青海某变电站10k V母线电流测试为例,将测量值与理论计算值进行比较,验证了测量值的准确性,指出实测值和理论值二者存在较大偏差是由于现场测试方法不当、系统运行方式的变化等原因造成的。In this paper,the signal injection method to test capacitive current is introduced to test the capacitive current of non-grounded neutral system. Taking the test of capacitive current of a 10 k V substation in Qinghai as an example,verify the accuracy of the measured value,and point out that the difference between the measured and theoretical values is due to the factors of improper test method,change of system＇s operation mode and so on.

关 键 词：电容电流 中性点不接地 变电站 测试方法 

分 类 号：TM71[电气工程—电力系统及自动化]