220 kV绝缘斗臂车预防性试验交流泄漏电流的测量分析

Measurement and Analysis of AC Leakage Current in Preventive Test of 220 kV Insulated Bucket Arm Truck

绝缘斗臂车是带电作业的重要设备,其电气性能的好坏直接关系到作业人员和电网运行的安全。通过对一台220 kV绝缘斗臂车交流泄漏电流测量结果的异常分析,发现了空间电容电流对测试结果的影响很大,提出了采用屏蔽测量引线去除干扰电流的方法,确保了测试结果准确可靠,保证了作业人员和电网运行的安全。

Insulated bucket arm trucks are important equipment for live working,and their electrical performance directly affects safety of personnel and grid′s operation.This paper analyzes abnormal measurement results of AC leakage current on a 220 kV insulated bucket arm truck,which indicates the significant impact of space capacitance current on test results.It proposes a method of using shielded measurement leads to remove interference current,ensuring accuracy and reliability of the test results,and facilitating safety of personnel and grid′s operation.