三相四线制电路中两功率表法计量误差分析  

Error Analysis Based on Two Power Meter Method in the Three-phase Four-wire Circuits

作　　者：查六一[1] 邵建龙[1] 周玉岩 

机构地区：[1]昆明理工大学信息工程与自动化学院,昆明650051 [2]中国十五冶金建设有限公司,黄石435000

出　　处：《电力系统及其自动化学报》2010年第5期76-79,共4页Proceedings of the CSU-EPSA

基　　金：云南省教育科学规划课题GG09017;昆明理工大学教育技术研究项目08X01

摘　　要：由于两功率表法不能测量三相四线制电路中的零序功率,采用此法将少计量功率,这早已为许多从事电量测试和计量的人员所认识。但在实际测量中,有可能比实际功率多计量,也可能比实际功率少计量。文中以火铺火电厂的110 kV升压变压器为例,通过现场实测数据,并对测量的数据进行分析,判断正负测量误差。通过分析该测量方式带来的测量误差来规范测量回路,减小关口电能表的测量误差,对电力企业、电力设计单位、施工单位都有着极为重要的意义。As the active power of zero-sequence circuit can not be measured in the three-phase four-wire circuits by two power meters,this method will lead to less power energy in measurement,In practical measurement,it may have more power than the actual measurement,may also be less than the actual power measurement.In this paper,by taking the step-up transformer of 110 kV in HuoPu power plant for example and using recorded field data,positive and negative measurement errors are judged by analyzing these data.The measurement error is analyzed to standardize measurement circuits and reduce the errors of gate energy meters in measurement,which have a very important significance to power enterprises,power design organizations and construction organizations.

关 键 词：三相四线制 两功率表法 零序有功功率 正负测量误差 电能计量 

分 类 号：TM73[电气工程—电力系统及自动化] F123.9[经济管理—世界经济]