基于自补偿技术的模数混合标准电能表设计  

Design of analog digital standard meter based on self feedback

作　　者：王一民 吴振宇 朱重冶 Wang Yimin;Wu Zhenyu;Zhu Chongye(Ningbo Institute of Metrology and testing,Ningbo 315048,China;Ningbo Sunrise Instruments Co.,Ltd.,Ningbo 315032,China)

机构地区：[1]宁波市计量测试研究院,浙江宁波315048 [2]宁波三维电测设备有限公司,浙江宁波315032

出　　处：《电子技术应用》2021年第7期88-91,96,共5页Application of Electronic Technique

摘　　要：目前数字化电能表溯源方面存在很多问题,针对这一情况,描述了一款模拟数字混合标准电能表的设计方法,使数字化电能表溯源统一到传统的模拟溯源体系中。介绍了功率角自补偿的方法,提升功率角的测量精度;通过一系列技术措施,克服了61850-9-2数字报文采样率偏低的困难,使得该标准表准确度等级达到了0.01级,对于开展电力公司常用的0.05级数字电能表校验仪检定工作有重要的意义。At present,there are many problems in the traceability of digital energy meters.In view of this situation,this article describes a design method of an analog-digital hybrid standard energy meter,which makes the traceability of digital energy meters unified into the traditional analog traceability system.The article introduces the method of power angle self-compensation to improve the measurement accuracy of the power angle;through a series of technical measures,it overcomes the difficulty of the low sampling rate of 61850-9-2 digital message,making the standard table accuracy level reach 0.01,which is of great significance for the verification work of the 0.05 class digital energy meter calibrator commonly used by power companies.

关 键 词：数字化电能表溯源 积分算法 加窗函数 功率角自补偿 

分 类 号：TN06[电子电信—物理电子学] TM933[电气工程—电力电子与电力传动]