摘要
目前国内通常采用三极法和钳表法测试杆塔接地电阻,但所测得数据和运行中线路杆塔实际耐雷水平都存在很大差异。本文简要分析了常规测试方法存在的问题,并通过对220k V线路杆塔测试结果同运行中实际耐雷水平的比对,验证了选择性补偿法的测试效果;并针对对基层杆塔接地测试工作中存在的问题,提出相应的改进措施。
Now people usually use three electrodes method and clamp tester method to measure tower grounding resistance in domestic. But it has a great difference between the date of measured and the real lighting withstand level of tower in operation. This paper analyzes the problem in the conventional methods, also checkouts the effect of selective compensation test method by comparing the test results of 220kV tower and the real lighting withstand level of the tower in operation. And putting forward better solutions for the problem in tower grounding resistance measurement in grass-roots unit.
出处
《电气技术》
2016年第2期80-82,92,共4页
Electrical Engineering
关键词
杆塔接地
选择性补偿法
分流
三极法
互电阻
tower grounding
selective compensation test method
shunt
three electrodes method
mutual resistance
