GIS circuit breaker fault on-line monitoring device based on sound

Abstract

The invention discloses a GIS circuit breaker fault on-line monitoring device based on sound. The device comprises a microphone array board and a host circuit board. The microphone array plate comprises an electret microphone and a conditioning circuit. A signal of each electret microphone passes through the conditioning circuit and then is output to the host circuit board. A signal acquisition unit on the host circuit board synchronously acquires an output signal of each electret microphone. The acquired data is processed by the signal processing unit, and whether the acquired data is valid data or invalid data is judged. Effective data and invalid data are stored in the data storage unit, the effective data are input into the AI diagnosis unit, a trained breaker action fault sound modelis arranged in the AI diagnosis unit, the effective data are recognized and judged through the model, and a judgment result is transmitted to a data background through the communication unit. The mechanical state of the circuit breaker is judged through voiceprints, the method does not need to be connected with a circuit breaker entity, and no influence exists on operation of the circuit breaker body.

Description

technical field [0001] The invention relates to the power system industry, in particular to a device for monitoring the mechanical state of a GIS circuit breaker. Background technique [0002] In the power industry, the mechanical state monitoring of circuit breakers in combined electrical GIS is very important. The traditional mechanical characteristic state is to install an encoder in the rotating shaft of the circuit breaker, and judge the speed and stroke of the circuit breaker through the encoder output signal and time conditions. In order to judge the mechanical state of the circuit breaker. The disadvantage of this method is that the encoder must be physically connected to the circuit breaker shaft, so there are potential hidden dangers to the action of the circuit breaker. It is more difficult to install and debug through the encoder monitoring method, especially for the station where the on-site circuit breaker has been running. [0003] At the same time, there is...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the encoder must be physically connected to the circuit breaker shaft, so there are potential hidden dangers to the action of the circuit breaker

It is more difficult to install and debug through the encoder monitoring method, especially for the station where the on-site circuit breaker has been running

[0003] At the same time, there is often more than one circuit breaker at the substation site. Under the condition of multiple circuit breakers, the signal acquisition of the designated monitored circuit breaker is easily affected by the signals of other surrounding circuit breakers.

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