Method and device for determining mechanical degradation of high voltage circuit breaker

Abstract

The method and device for determining the mechanical degradation of a high-voltage circuit breaker provided by the present invention, the method includes: obtaining the mechanical characteristic data in the data obtained from the type test of the high-voltage circuit breaker, the mechanical characteristic data includes a plurality of discrete times in each mechanical characteristic test in the type test The mechanical characteristic value corresponding to each discrete time point; obtain the standard reference mechanical characteristic value and failure judgment value corresponding to each discrete time point; calculate the difference between the mechanical characteristic value of each mechanical characteristic test corresponding to a discrete time point and the standard reference mechanical characteristic value Absolute value, to obtain the corresponding absolute value sequence; perform curve fitting on the absolute value sequence to obtain the decay curve corresponding to the discrete time point; according to the standard reference mechanical characteristic value, failure judgment value and decay curve corresponding to each discrete time point to obtain The degradation ratio of mechanical characteristics can determine the mechanical degradation of high-voltage circuit breakers based on the big data of type tests, which is conducive to predicting and preventing the failure of high-voltage circuit breakers in advance.

Description

technical field [0001] The invention relates to the technical field of circuit breaker detection, in particular to a method and device for determining the mechanical degradation of a high-voltage circuit breaker. Background technique [0002] The high-voltage circuit breaker (or high-voltage switch) plays a control role in the high-voltage circuit and is one of the important electrical components in the high-voltage circuit. The high-voltage circuit breaker can not only cut off or close the no-load current and load current in the high-voltage circuit, but also cut off the overload current and short-circuit current through the function of the relay protection device when the system fails. Cut-off capability, when a fault occurs in a certain part of the power system, the faulty part can be quickly removed from the system, reducing the scope of power outages, preventing the expansion of accidents, protecting various electrical equipment in the system from damage, and ensuring t...

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Problems solved by technology

[0004] In view of this, the present invention provides a method and device for determining the mechanical degradation of a high-voltage circuit breaker, an electronic device, and a computer-readable storage medium, which can determine the mechanical degradation of a high-voltage circuit breaker based on the big data of the type test, and solve the problem of It is impossible to judge the mechanical performance degradation of the high-voltage circuit breaker in actual operation, which is not conducive to predicting the failure of the high-voltage circuit breaker in advance and preventing it, which will cause the power system to fail.

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