大型接地网测试技术的发展与应用  

Development of Measurement Technology of Large Grounding Grid

作　　者：陈鹏云[1] 朱庆翔[1] 吴伯华[1] 刘晋[1] 陈继东[1] 王绥喻 袁静帆 

机构地区：[1]国家电力公司华中公司,武汉430077 [2]海南省电力公司生技部,海口570203

出　　处：《高电压技术》2003年第10期18-19,21,共3页High Voltage Engineering

摘　　要：分析了外界干扰对工频大电流法的影响和异频法测量大型地网接地电阻的优点 ,指出几种应用较广的异频测试仪器中仪器 D所测为地网的纯电阻 R,80 0 0型所测为阻抗 Z而 JD16— 可同时给出 R和 Z。为消除电压、电流线互感对 X值的影响 ,可在地网外附近设置辅助电极测量地网自感分量 。The influence of interference on large current method is analyzed. The advantage of measurement of large grounding grid by non power frequency method is presented. The instrument D measures the pure resistance R and the 8000 type tester measures the impedance Z . The JD16-Ⅱ can measures the R and Z simultaneously. In order to eliminate the influence of voltage and current lines on X , the auxiliary probe can be put near the grid to measure the self-inductance component of grid. The test verifies the effect.

关 键 词：大型接地网 测试 接地电阻 抗干扰 过电压保护 工频大电流法 

分 类 号：TM862[电气工程—高电压与绝缘技术]