基于绝对延时的电子式电压互感器自动校准方法

Automatic calibration method of electronic voltage transformer based on absolute delay

针对同步脉冲法校准电子式电压互感器的比值误差和相位差较大的问题,设计基于绝对延时的电子式电压互感器自动校准方法。通过采集电子式电压互感器的输出信号,计算电子式电压互感器的绝对延时并处理采集的电子式电压互感器的信号。根据对采集电压互感器的信号处理结果,设定自动校准器的各项参数,完成基于绝对延时的自动校准方法的设计。设计与同步脉冲法的对比实验,证明了设计的自动校准方法能够降低校准电子式电压互感器的比值误差和相位差,更适用于对电子式电压互感器的自动校准。

Aiming at the problem of large ratio error and phase difference of synchronous pulse method to calibrate electronic voltage transformer,an automatic calibration method based on absolute delay is designed.By collecting the output signal of the electronic voltage transformer,the absolute delay of the electronic voltage transformer is calculated and the signal of the electronic voltage transformer is processed.According to the signal processing results of the voltage transformer,the parameters of the automatic calibrator are set,and the automatic calibration method based on absolute delay is designed.The comparison experiment between design and synchronous pulse method proves that the designed automatic calibration method can reduce the ratio error and phase difference when calibrating electronic voltage transformer,and is more suitable for automatic calibration of electronic voltage transformer.