Direct current checking equipment applicable to rotor overvoltage protection device

Abstract

The invention provides direct current checking equipment applicable to a rotor overvoltage protection device, and relates to the technical field of electric field equipment. The direct current checking equipment comprises a booster, a boosting transformer, a silicon controlled bridge and a voltage meter, wherein the booster is used for providing alternating current for the boosting transformer; the boosting transformer is used for boosting the alternating current to increase voltage of an alternating current loop; the silicon controlled bridge is connected with the boosting transformer and isused for inverting the alternating current on the high-voltage side of the boosting transformer into direct current; the voltage meter is connected with the silicon controlled bridge and the rotor overvoltage protection device and is used for monitoring the voltage of the silicon controlled bridge. According to the direct current checking equipment applicable to the rotor overvoltage protection device, a direct-current checking loop is built through the booster and the boosting transformer in high-voltage test equipment and an external high-capacity high-voltage-withstand silicon controlled element, so as to check action voltage and return voltage of the rotor overvoltage protection device, and checking of the rotor overvoltage protection device is realized.

Description

technical field [0001] The invention relates to the technical field of electric field equipment, in particular to a DC calibration equipment suitable for a rotor overvoltage protection device. Background technique [0002] This section is intended to provide a background or context for implementations of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] In the generator excitation system, the rotor overvoltage protection device is installed at both ends of the generator rotor. Its function is that when the rotor overvoltage occurs, the protection device operates to eliminate the rotor overvoltage through the demagnetization resistor. It is a kind of generator rotor protection device. Conventional protection is also a rare primary side DC protection device in generator protection. [0004] In the power plants of the prior art, the test of primary equipment is generally AC, and the te...

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Problems solved by technology

[0004] In the power plants of the prior art, the test of primary equipment is generally AC, and the test instruments are mainly AC. There are few DC calibration equipment specially for primary equipment, and there are not many uses. Therefore, an economical and practical calibration method is sought. installation imminent

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