用对称分量法分析不对称三相电路无功电能的测量误差  

To Analyze the Reactive power Measure Error of Non-balance Three-phase Circuit with Balance-Phasor Method

作　　者：赵利[1] 

机构地区：[1]山西工业职业技术学院机电工程系,山西大同037003

出　　处：《雁北师范学院学报》2005年第2期77-79,共3页Journal of Yanbei Teachers College

摘　　要：由于实行了按功率因素调整电价制度,就必须正确的测量出负载的平均功率因素.在不对称的三相电路内,欲把平均功率因素测量正确,就必须准确地测出负载的无功电能.而在线电压及线电流不对称的情形下,无功电能的测量会产生误差.本文用对称分量法对此问题作了详细的分析和讨论.Owing to charging for electricity according as how much the Power Factor is,so the average power factor should be measured accurately as much as one can do.In the non-balance three-phase circuit, the reactive power of load has to be measured accurately if the average power factor is expected to be of preciseness. But in the condition of non-balance line voltage and non-balance line current in a circuit, the measure error of reactive power is produced inevitably. In this article,the above problem has been analyzed and probed particularly wirh Balance-phasor Method.

关 键 词：对称分量法 不对称电路 无功电能表 测量误差 

分 类 号：TM131.43[电气工程—电工理论与新技术]