Research on Calibration Technology of Arresters Monitoring Device

After the MOA online monitoring device is installed on site, there are problems such as inability to disassemble and difficult to sample the signal. To ensure the accuracy of the related equipment, this paper studies a field calibration method based on the zero flux principle. First, the background current of the MOA ground is sampled. After the space is set, the standard signal of the PT secondary side voltage phase is used as the reference phase for calibration; the online measurement standard of the MOA online monitoring device is developed. The simulation and test results show that the proposed method and measurement standard can carry out online calibration of the MOA online monitoring device.