Intelligent power distribution switch control circuit fault detection circuit and detection method thereof

Abstract

An intelligent power distribution switch control circuit fault detection circuit comprises a power distribution switch operational power supply module and further comprises a voltage output detection circuit, a return circuit line break detection circuit and a main control unit (MCU), wherein the voltage output detection circuit is used for being connected with a voltage output end of a power distribution switch control circuit, collecting real-time voltage change signals output by the power distribution switch control circuit, and transmitting the real-time voltage change signals to the MCU; the return circuit line break detection circuit is used for collecting real-time current change signals of a control return circuit formed by the power distribution switch control circuit and a power distribution switch body, and transmitting the real-time current change signals to the MCU; the MCU is used for receiving signals transmitted by the voltage output detection circuit and the return circuit line break detection circuit and receiving signals of each contact of the power distribution switch body, judging working conditions of the control return circuit, sending control signals to the power distribution switch control circuit according to the working conditions of the control return circuit, and sending working condition signals to a primary station in a long distance, so that judge of fault category is achieved. The invention further comprises a detection method.

Description

technical field [0001] The invention relates to a detection circuit and a detection method, in particular to a detection circuit and a detection method for detecting the circuit current and output voltage of a power distribution switch. Background technique [0002] Usually, high-voltage circuit breakers and high-voltage isolation power distribution switches include power distribution switch bodies, power distribution switch control circuits, and power distribution switch operating power supplies for power distribution switch control circuits. Power distribution switch bodies include power distribution switch main contacts and power distribution switches. Electrical switch auxiliary contacts. Auxiliary contacts of power distribution switches, as small-capacity contacts that act synchronously with the main contact (or main switch) in time, are usually used in corresponding secondary circuits to provide power distribution switches for protection, control, signal, and measureme...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an intelligent power distribution switch control loop fault detection circuit to solve the technical problem that the type of refusal to operate cannot be distinguished when the power distribution switch fails

[0006] Another object of the present invention is to provide a method for detecting circuit faults using the above detection circuit to solve the technical problem that fault types cannot be distinguished and marked

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