摘要
变电站接地电阻的传统测试方法要求要有较长测试引线,因受测试环境的限制,有时难以实现。研究了一种实际中更为可行的接地电阻的短距测试方法,用该方法测试时,在电流极位置确定的情况下,通过仿真计算确定出电压极的设置位置。用短距测试法对模拟接地网进行了实测,并与用电位降法和0.618法的测试结果进行了比较和讨论。测试结果表明,短距测试法可较准确地测得接地网的接地电阻,同时测试引线的长度得以大大缩短。
Traditional testing method of grounding resistance needs long test leads, so some time it is difficult to realize due to the restriction by substation environment. This paper studies a more practical short distance testing method of grounding resistance. By this method, under the circumstance of fixed position of current electrode, the testing position of voltage electrode is decided through simulation calculation. The actual testing is performed to a simulated grounding network by this method, and the result is compared and discussed with the results by voltage drop method and 0. 618 method. The result of test shows that by using short distance testing method the grounding resistance could be correctly measured, meantime the length of test current electrode leads are greatly shortened.
出处
《供用电》
2010年第1期4-6,19,共4页
Distribution & Utilization
关键词
接地电阻
短距测试法
电位降法
0.618法
grounding resistance
short distance testing method
voltage drop method
0. 618 method
