一种测量配电网电容电流的新方法  

A NEW METHOD TO MEASURE CAPACITANCE CURRENT IN DISTRIBUTION NETWORK

作　　者：刘力[1] 孙结中[2] 

机构地区：[1]广西大学电气工程学院,广西壮族自治区南宁市530004 [2]广西电力试验研究院,广西壮族自治区南宁市530023

出　　处：《电网技术》2001年第5期63-65,共3页Power System Technology

摘　　要：介绍一种从 PT二次侧测量配电网电容电流的方法。即从 PT开口三角端分别注入不同频率的幅值相等的恒定电流 ,再分别测量开口三角端电压 ,经计算可得出配电网的电容电流值。这种方法可使电容电流的测量工作安全、快捷、准确 ,提高测量工作的效率。On the basis of a large amount of tests and researches, a new method to measure the capacitance current in distribution network from the secondary winding of PT is presented. In this method, the secondary windings of PT are connected as an open delta and its primary windings are star connected.Three constant currents with different frequencies are injected into the open delta. Then the voltages across the open delta are measured respectively. Using the formulae given in this paper, the capacitance current of the distribution network can be calculated. The proposed method makes the measurement of capacitance current in distribution network safe, fast and accurate.

关 键 词：电容电流测量 电压互感器 二次绕组 配电网 

分 类 号：TM727[电气工程—电力系统及自动化]