【作者】 孙建华； 郭小保；

【Author】 Sun Jianhua Guo Xiaobao(Qujing Power Supply Bureau,Qujing,655000,China)

【机构】 曲靖供电局；

【摘要】 并联电容器串电抗器组成的补偿装置,是电力系统中的主要无功电源。但是系统中的高次谐波对其影响特别严重,主要表现为电容器过电流。本文依据设计规范给出的电容器允许稳态电流值,进一步分析研究了谐波过电流值,总结了继电保护装置与功能。针对常规微机电容器保护装置的不足之处,提出了改进意见,并对改进后的继电保护定值进行了探讨。更多还原

【Abstract】 The compensation equipment consisting of parallel capacitor with series reactor is an major reactive power in power system.But the system high-order harmonic of its impact is particularly serious,characterized by capacitor over-current.The article according to steady-state current value capacitor allows of design specifications giving,further analyzed and studied harmonic over-current value.Aiming at the inadequacies of conventional computer capacitor protective equipment,proposed improvements,and discussed improved relay setting values.更多还原