数字电能计量及其电能表检测技术

Digital Electric Energy Metering and Its Detection Technique

为了适应智能变电站的发展,在新的技术条件基础上需有一套符合数字化变电站特点的计量系统。基于IEC61850标准实施的智能变电站,计量系统结构发生了根本改变。从总体上介绍了智能变电站计量系统及其与传统计量系统的区别。从原理上分析了数字电能表的构造和应用特点,由于计量方式的改变,对其相应数字电能计量检测系统和溯源原理进行了论述,提出了智能变电站中数字式电能表检定方案。由于数字化电能计量暂无国家标准和行业标准,随着智能变电站投运,需进一步开展相关研究。

In order to adapt to the development of smart substation,it requires a set of measurement system which is consistent with the features of digital substation on the basis of the new technical conditions.The metering protocol structure of the smart substation based on IEC 61850 implementation has changed.The basic information about smart substations and the differences between the electric energy metering system of smart substation and the traditional measurement system are generally described.The configuration and application characteristics of digital watt-hour meter are analyzed.Because the metering type is changed,the corresponding detection system of digital electric energy metering and its traceable principles are discussed,and the examination schemes of digital watt-hour meter in smart substation are proposed.Since there are no national standards and industry standards for the digital electric energy metering,the relevant researches need carrying out with a large number of smart substations being put into operation.