电子式互感器稳态误差校验技术的研究

Steady-state Error Calibration Technology for Electronic Instrument Transformer

电子式互感器的稳态误差校验是反映其性能的重要参数,是确保应用于电力系统的前提。笔者依据相关国家标准,讨论了电子式互感器稳态误差的校验方法,根据不同互感器的二次输出模式设计了相应的校验回路,然后通过进一步分析各个组成部分的误差来源,提出了具体的改善办法,结合自行研制的电子式互感器稳态误差校验仪建立了整套校验系统。型式试验结果表明,此校验系统在测量和运行稳定性方面已达到实用化的要求。

The steady-state error is the most important parameter for the calibration system of electronic transformer,and it ensures to practice in power system.According to correlative national standards the steady-state error calibration technical was discussed,and the relative suitable calibration circuit was designed based on the secondary output mode of different transformer.In order to solve problems,the error component of each section is analyzed,and a feasible method was presented,which combined with the new designed electronic transformer steady-state error calibrator,then the calibration system was established.The experiment result indicates that the calibration system has achieved the requests in the field of measurement and operation stability.