数字电能计量的误差来源探讨  

作　　者：唐毅[1] 江波[1] 陈贤顺[1] 

机构地区：[1]国网四川省电力公司计量中心,四川成都610045

出　　处：《四川电力技术》2014年第A01期76-79,83,共5页Sichuan Electric Power Technology

摘　　要：随着智能电网和智能变电站技术的发展和相关工程建设的开展,基于IEC 61850的数字电能计量系统也得到了大范围的部署.相比传统计量系统,数字电能计量系统有着全新的结构和特性,其误差来源也发生了很大的改变.从数字电能计量的总体出发,对可能引入计量误差的各个环节进行了探讨,对各个环节的误差特性进行了简要分析.探讨的环节包括电子式互感器、合并单元、通信环节、数字电能表以及非同步采样等.With the technology development and engineering practice of smart grid and smart substation, the digital electric en- ergy metering system based on IEC 61850 are widely established. Compared with the conventional metering system, the digital electric energy metering system has totally new structure and characteristics, and its metering error sources also change. Each stage in digital electric energy metering system that may introduce metering errors is investigated. The error characteristics of each stage are analyzed. The investigated stages are composed of electronic transformer, merging unit, communication process, digital watt -hour meter and asynchronous sampling.

关 键 词：智能电网 数字电能计量 IEC 61850 计量误差 

分 类 号：TM932[电气工程—电力电子与电力传动]