电力电容器介质损耗在线监测研究

摘要

对电力电容器介质损耗阻容并联模型进行了分析，使用最小二乘法计算出电容器等效模型中电容、等效电阻，用等效电阻代替介质损耗因数衡量电容器绝缘性能。将该算法应用到电力电容器在线监测系统中进行电容器运行状态的在线监测。经在变电站中试运行，验证了该算法的实用性。%This paper analyzed parallel equivalent circuit model of power capacitor .By using least square method,it calculated the capacitor and resistance of equivalent circuit model substituted the resistance of equivalent for dielectric loss factor to measure dielectric property of power capacitor .And this algorithm can be applicable to online monitoring of power capacitor .The test operation in substation verifies the practicability of the algorithm .