一种高压输电线交流电阻在线测量新方法的研究

STUDY ON A NEW ON-LINE MEASUREMENT METHOD OF THE AC RESISTANCE IN HV TRANSMISSION LINE

介绍了一种高压输电线接头处交流电阻在线测量的原理、方法及软硬件的实现。该装置基于电磁感应原理 ,利用线圈在高压输电线附近产生的感应电动势来补偿掉测量回路中的感应电动势 ,可在线测量高压输电线接头处的交流电阻和电流 ,判断接头处状态。实验室实测结果表明 ,该装置精度高 ,体积小 ,重量轻 ,操作简单。

A new method of on line measuring AC resistance at the joint of high voltage transmission line and its practice of soft ware and hardware are described in this paper. On the basis of electromagnetic theory,the induced electromotive force superimposed on the resistance voltage drop is removed from the measuring loop by the use of a coil.This device is small in size,light in weight. The test results show that it has high accuracy and is easy to operate.