电子式互感器校验仪校验方法的研究

Research on Calibration Method of Electronic Transformer Calibrator

电子式互感器在电网中的应用越来越多,对电子式互感器准确度校准所使用的电子式互感器校验仪变得更加重要。电子式互感器校验仪采用直接测量法对电子式互感器进行校准,可以对模拟量输出和数字量输出的电子式互感器进行准确度校准,也可以对传统的电磁式互感器进行校准。为了保证电子式互感器校验仪的准确性,文中对电子式互感器校验仪的校准方法进行了深入的研究。针对电子式互感器校验仪的特点,分别对采样通道的采样准确度、比差、角差等进行了校验。

With more and more applications of electronic transformer in power grid,the electronic transformer calibrator used for accuracy calibration of electronic transformer becomes more and more important. The electronic transformer calibrator uses the direct measurement method to calibrate the electronic transformer. It can calibrate the accuracy of the electronic transformer with analog output and digital output,and can also calibrate the traditional electromagnetic transformer. In order to ensure the accuracy of electronic transformer calibrator,the calibration method of electronic transformer calibrator is studied in depth. According to the characteristics of electronic transformer calibrator,the sampling accuracy,ratio difference and angle difference of sampling channel are verified respectively.