Support vector machine and multi-body dynamics simulation-based high-voltage circuit breaker identification method

Abstract

The invention discloses a support vector machine and multi-body dynamics simulation-based high-voltage circuit breaker identification method. The method comprises the steps of building a three-dimensional model of a high-voltage circuit breaker, and calibrating and verifying the three-dimensional model; by changing size, material and property parameters of the three-dimensional model, performing analogue simulation on various faults of the high-voltage circuit breaker to obtain various corresponding mechanical property waveforms; performing waveform interception, mathematic morphological filtering and characteristic extraction processing on the mechanical property waveforms corresponding to the various faults to obtain an eigenvector sample set; based on a support vector machine and a one-to-many classification method thereof, training a classifier, and calculating the credibility of each classification; and inputting actually measured unknown fault eigenvectors to the training support vector machine, performing fault type identification to realize mechanical fault classification of the high-voltage circuit breaker, and finishing self-learning. According to the method, a large amount of physical simulation experiments do not need to be carried out; the faults of the high-voltage circuit breaker can be accurately identified; and the method has a self-learning function and a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of electrical equipment fault identification, in particular to a high-voltage circuit breaker identification method based on a support vector machine and multi-body dynamics simulation. Background technique [0002] High-voltage circuit breaker is one of the largest power equipment in the power system, and it is also the most important switchgear. It is responsible for the dual tasks of control and protection. Its working reliability is an important factor that determines the safe operation of the power system. [0003] However, since the internal structure of the high-voltage circuit breaker is not visible, it is difficult to intuitively know whether the components therein are normal. However, it is impractical to measure and analyze the internal components after dismantling the high-voltage circuit breaker in operation. Therefore, in order to know the mechanical state of the high-voltage circuit breaker, t...

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Problems solved by technology

[0009] The purpose of the invention is to overcome the deficiencies in the

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