电子式互感器校验技术综述

Summary on Calibration Technology for Electronic Transformer

根据国家相关标准,电子式互感器在挂网运行前和使用中必须进行校验,电子式互感器校验方法及校验技术成为国内多家科研机构的研究热点,为此,分别总结了模拟输出型和数字输出型电子式互感器校验方法,并从标准器选取、数据采集、信号同步和校验算法等方面对影响电子式互感器校验精度的关键技术进行了分析,最后介绍了当前电子式互感器现场校验、在线校验、优化的校验算法及新型校验装置等方面的最新进展。

According to relevant national standards,it is necessary to carry out calibration on electronic transformer before its operation in network and in its utilization,and calibration methods and technologies for electronic transformer become research hot points for many domestic scientific research institutes.Therefore,this paper respectively summarizes calibration methods for digital output typed electronic transformer and analog output typed electronic transformer.It also analyzes key technologies influencing precision of verifying electronic transformer in aspects of selection for etalon,data acquisition,signal synchronization,calibration algorithm,and so on.It introduces newest developments of present electronic transformer in field calibration,online calibration,optimized calibration algorithm,new typed calibration devices,and so on.