Intelligent multi-channel voltage phasing tester of transformer substation and control method thereof

The invention provides a control method of an intelligent multi-channel voltage phasing tester of a transformer substation. The method comprises the following steps: setting a work mode, and calculating an overvoltage and undervoltage discrimination unit constant value of a to-be-checked voltage loop; carrying out isolation sampling on the reference voltage and the to-be-checked voltage through anisolation sampling unit; calculating the voltage difference between the reference voltage and the to-be-checked voltage, and carrying out the intelligent fault diagnosis of the to-be-checked voltageloop through the voltage difference features; and using a differential pressure waveform display unit for displaying differential pressure waveforms and corresponding differential pressure effective values. The invention further provides an intelligent multi-channel voltage phasing tester of the transformer substation. According to the transformer substation intelligent multipath voltage phasing tester control method provi