Permanent magnetic mechanism high voltage vacuum circuit breaker fault mode identification method

Abstract

A permanent magnetic mechanism high voltage vacuum circuit breaker fault mode identification method comprises a fault condition information classification method, a condition information feature extraction method and a fault classification identification method. The fault information classification method is to classify permanent magnetic mechanism high voltage vacuum circuit breaker fault information into loop condition information, mechanical condition information and a vacuum extinction chamber condition information. The condition information feature extraction method is to carry out extraction in the time domain and the frequency domain for different kinds of condition information. The fault classification identification method is based on a method of support vector machine increment learning, draws on a fault sample training classification model, and continuously accumulates new samples to improve the classification identification accuracy. The invention solves problems that fault monitoring information acquisition is not comprehensive and the fault identification accuracy is low, effectively identifies common faults of a permanent magnetic mechanism high voltage vacuum circuit breaker, and has a guiding effect for breaker condition based maintenance and fault diagnosis.

Description

technical field [0001] The invention relates to a state monitoring and fault diagnosis of a high-voltage circuit breaker, in particular to a fault pattern recognition method of a high-voltage vacuum circuit breaker. Background technique [0002] The high-voltage vacuum circuit breaker is a kind of high-voltage switchgear, and its function is to respond to control commands, switch on or off loads or lines, and ensure the safe and reliable operation of the power system. As the installed capacity of the power system continues to increase, the number of circuit breakers is also increasing. Due to its simple structure and long stable operation time, vacuum circuit breakers have been widely used in recent years. The permanent magnet mechanism means that the operating mechanism of the circuit breaker is a permanent magnet structure. Because its mechanical characteristics are more consistent with the opening and closing process of the circuit breaker, and the price is cheap, it has...

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Problems solved by technology

[0010] Aiming at the deficiencies in the prior art, the present invention aims to solve the problems of incomplete acquisition of fault information and low accuracy of fault pattern recognition of permanent magnet mechanism high-voltage vacuum circuit breakers, and provides a method for fault pattern recognition of permanent magnet mechanism high-voltage vacuum circuit breakers

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