Withstand voltage test circuit and withstand voltage test method of high-voltage quick switch type current limiter

Abstract

The invention provides a withstand voltage test circuit of a high-voltage quick switch type current limiter, and belongs to the technical field of performance detection of power equipment. The test circuit comprises a high-voltage quick switch type current limiter, a withstand voltage testing device and an alternating-current high-voltage measuring device, wherein a quick switch in the high-voltage quick switch type current limiter and one wiring end of a current limiting reactor are in a split state, and the other wiring end is kept in a connected state; the withstand voltage test device comprises an adjustable test reactor, a test transformer, a variable frequency power supply and a withstand voltage controller, the adjustable test reactor is respectively connected with a withstand voltage device wiring end of the current limiting reactor, a first output end of the test transformer and the withstand voltage controller, and two input ends of the test transformer are connected with the variable frequency power supply; the second output end of the test transformer is grounded, the voltage-withstanding controller is connected between the adjustable test reactor and the variable-frequency power supply, and the voltage-withstanding controller is connected with the adjustable test reactor through an optical fiber. The invention further provides a withstand voltage test method of the high-voltage quick switch type current limiter.

Description

technical field [0001] The invention relates to the technical field of electric equipment performance detection, in particular to a withstand voltage test circuit and a withstand voltage test method of a high-voltage fast switch current limiter. Background technique [0002] A short-circuit fault in the power system will generate a short-circuit current of tens of thousands of amps, also known as a fault current. When the short-circuit current is too large, it will exceed the breaking capacity of the system circuit breaker, and will damage the windings in other power equipment such as transformers and current transformers in the system. It is extremely harmful. The high-voltage fault current limiter can limit the size of the short-circuit current by changing the parameters in the power system line, so that the circuit breaker can disconnect the connection between the fault point and the power supply, and prevent the short-circuit fault from continuing, so as to ensure the sa...

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Problems solved by technology

[0004] In view of this, the present invention provides a withstand voltage test circuit and a withstand voltage test method of a high-voltage fast switch current limiter, which solves the problem that the current fast switch current limiter cannot be effectively and conveniently carried out in the factory and on-site handover test. The problem

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