Circuit breaker switch state detection device based on principle of magnetic field

Abstract

The invention discloses a circuit breaker switch state detection device based on the principle of a magnetic field. The circuit breaker switch state detection device comprises a magnetic field detection circuit, a single-chip microcomputer circuit, a data uploading circuit, an indicating lamp circuit and a power supply conversion module. The output end of the magnetic field detection circuit is connected with the single-chip microcomputer circuit. The output end of the single-chip microcomputer circuit is respectively connected with the indicating lamp circuit and the data uploading circuit. The power supply conversion module supplies power to the magnetic field detection circuit, the single-chip microcomputer circuit and the indicating lamp circuit. The disconnection state of a circuit breaker is detected by adopting the new parameter magnetic field, and an original detection mechanism can be assisted to judge the state of the circuit breaker so that reliability can be enhanced; the structure of the circuit breaker or the original detection system does not need to be changed; and data storage through a computer and monitoring of the detection result are facilitated for users.

Description

technical field [0001] The invention relates to the technical field of electrical equipment detection, in particular to a circuit breaker switch state detection device based on the principle of magnetic field. Background technique [0002] A circuit breaker acts as a switching device capable of making, carrying and breaking current under normal circuit conditions. With the development of power system and the increase of line transmission capacity, the performance requirements of circuit breakers are gradually increasing. If the circuit breaker breaks down and is not disconnected, it is falsely reported as disconnected. If the operator disconnects or closes the isolating switch at this time (the isolating switch has no ability to cut off the current and can only be used when there is no current on the line), it will Cause the isolating switch to burn out, and even cause a large-scale power outage and casualties. Therefore, the switching state of the circuit breaker is very ...

AI Technical Summary

Problems solved by technology

[0004] The above two methods can detect the state of the circuit breaker very well, but the detection device cannot guarantee that it can work normally every time, so there is a safety hazard in the detection of the circuit breaker

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