Method and system for establishing electromagnetic model of circuit breaker arc combustion process

Abstract

The invention discloses a method and system for establishing an electromagnetic model of a circuit breaker arc combustion process. The method comprises the following steps: acquiring the structural parameters of a circuit breaker, establishing a circuit breaker simulation model based on a preset proportion according to the structural parameters of the circuit breaker, wherein the structural parameters of the circuit breaker include the structure, the shape and size, and the material properties of the circuit breaker; acquiring the electromagnetic environment parameters of the circuit breaker, and establishing a simulating electromagnetic environment where the circuit breaker simulation model is located in the arc combustion process according to the electromagnetic environment parameters; simulating a high-frequency discharging excitation source by using a Gaussian pulse signal in order to perform simulating discharging on the circuit breaker simulation model in the simulating electromagnetic environment to simulate the circuit breaker arc combustion process; and detecting the change of an electromagnetic wave signal at preset distance to the circuit breaker simulation model in the simulated circuit breaker arc combustion process. The method and system can accurately reflect the arc combustion process of the circuit breaker and can further determine the ablation degree of the circuit breaker according to the arc combustion process.

Description

technical field [0001] The present application relates to the field of electrical equipment detection, in particular to a method and system for establishing an electromagnetic model of an arcing process of a circuit breaker. Background technique [0002] Electrical equipment is prone to electrical faults due to its own characteristics, and accidents in the power system caused by electrical equipment failures account for an increasing proportion of all accidents in the power system year by year. Since the circuit breaker is one of many key electrical equipment or one of the key electrical equipment components, its operational reliability directly affects the safe operation of the entire power system. [0003] Since the operational reliability of the circuit breaker directly affects the safe operation of the entire power system, in order to reduce the electrical faults caused by the circuit breaker itself, the research on the characteristics of the circuit breaker itself is re...

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Problems solved by technology

[0005] The purpose of this application is to provide a method for establishing an electromagnetic model in the arcing process of a circuit breaker and a systematic technical solution to solve the lack of effective detection and evaluation means for the arc extinguishing characteristics of circuit breakers in the prior art introduced in the background technology, resulting in It is impossible to determine whether the circuit breaker can meet the arc extinguishing requirements, which brings hidden dangers to the safe operation of the power system

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