A method for obtaining circuit breaker status evaluation parameters

Abstract

The invention relates to a circuit breaker state assessment parameter obtaining method and belongs to the technical field of equipment state monitoring. An auxiliary marker is fixed on a part in rigid connection with a circuit breaker; a high-definition high-speed camera is used for shooting movement sequence images of the marker in open-close processes of the circuit breaker; a rapid searching block matching method is used for estimating the positions of the auxiliary marker so as to obtain a movement locus; then a rhombus searching block matching method is used for obtaining three-dimensional coordinates and a stroke time curve of a mass center; and according to the curve, the mechanical characteristic parameters of the circuit breaker, such as open-close speeds, the stroke, the over stroke and the overshoot, can be calculated, and the mechanical characteristic parameters are input to a limit learning machine to obtain the state assessment parameters of the circuit breaker. The obtaining method is applied to the online detection of the circuit breaker, the parameters are provided for circuit breaker state assessment, work interruption caused by shutdown of the circuit breaker working on line is simultaneously prevented, and the shutdown condition for detecting generated faults is avoided, so that the circuit breaker state assessment parameter obtaining method is suitable for being popularized and applied in associated fields.

Description

technical field [0001] The invention belongs to the technical field of equipment state monitoring, and relates to a method for obtaining circuit breaker state evaluation parameters. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. High-voltage circuit breakers are used as power generation and power consumption Its reliable operation is of great significance to ensure the safety of the power grid. The statistics of the past ten years show that the average power loss of each circuit breaker accident in my country reaches millions of kilowatt-hours, and the loss caused by it is the equipment itself. The price is several times or even tens of thousands of times. Therefore, the power operation department has put forward higher requirements for ensuring the operation reliability of the hi...

AI Technical Summary

Problems solved by technology

[0004] The present invention overcomes the disadvantages of the prior art, and provides a method for obtaining circuit breaker state evaluation parameters, which can obtain the operating state parameters of the circuit breaker under various working conditions without stopping the machine, and the obtained parameters can form a circuit breaker The evaluation parameters of the running state, and when applied in actual production, can realize the online detection of the motion characteristics of the circuit breaker in the non-stop state, avoiding the tedious detection after the fault shutdown and the failure during the shutdown

Images