Method and device for checking power-factor angle of high voltage line of intelligent substation on site
A technology of power factor angle and smart substation, which is applied in the direction of electrical devices, measuring electric power, and the phase angle between voltage and current, etc. It can solve the problem of low insulation voltage, inability to simulate the working environment, and the lack of simultaneous measurement of power factor of current transformers Angle and other issues to achieve the effect of ensuring accuracy
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[0020] as attached figure 1 As shown, the on-site verification device for the power factor angle of the high-voltage line in the smart substation includes a current booster, a standard current transformer, a high-voltage test power supply, a standard voltage transformer, a phase shifter, an electronic transformer comprehensive calibrator, and a voltage booster and step-up regulators, step-up regulators. The power supply of the device adopts AC 380V / 100A, three-phase four-wire system. The large current generated by the current booster is passed through the standard current transformer by the 220kV high-voltage cable, and then connected to the primary two ends of the ECT, that is, the electronic current transformer. This method has the characteristics of large current and high insulation voltage. The high voltage generated by the high voltage test power supply (1.2*220 / kV and below) are connected in parallel to the standard voltage transformer, and then connected to EVT, t...
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