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.
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)
出处
《电子技术应用》
2021年第7期88-91,96,共5页
Application of Electronic Technique
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
digital energy meter tracing
integral algorithm
windowing function
power angle self compensation
