摘要
针对电子式互感器现场的校验数据与其出厂验收数据出入较大的问题,结合中山市220kV三乡变电站电子式互感器现场验收试验工作,提出了电子式互感器的现场校验技术原理、误差修正和现场校验方法。关键提出修改传统的现场校验方法——采用试验光纤的方案,将电子式互感器与配套的合并单元一起作为被检对象,确保合并单元与被检互感器相对应,完全避免误差修正参数写入错误。
To solve the problem of large discrepancy between field calibration data and factory acceptance test data of electronic transformer, the field acceptance test of electronic transformer for 220 kV Sanxiang Subsation in Zhongshan, China is combined; the technical principle, error correction and method of field calibration of electronic transformer are presented. It is emphatically proposed that the traditional field calibration method be amended, and the scheme of testing optical fiber be adopted, which takes the electronic transformer and the ancillary merging unit as tested objects, thus ensuring the correspondence between the merging unit and the tested transformer, and completely avoiding the writing mistake of error correction parameter.
出处
《广东电力》
2010年第6期28-30,68,共4页
Guangdong Electric Power
关键词
电子式互感器
现场校验
误差
修正方法
安全性
electronic transformer
field calibration
error
correction method
security
