DC power transmission system commutation failure fault identification method based on target detection

Abstract

The invention provides a DC power transmission system commutation failure fault identification method based on target detection, and the method comprises the steps: selecting fault oscillogram of a commutation failure phenomenon under various working conditions, carrying out the classification of the oscillogram according to the fault type, and selecting a part of the fault oscillogram as a data set; performing convolution operation on the data set, and dividing a feature map obtained by the convolution operation into S * S grids to form S2 cells; determining parameters of a target detection prior frame in each cell; anchoring a prior frame of target detection in each cell through clustering operation; performing repeated parameter training on the detection model by using the training data set and the test data set; and taking the fault recording or simulation oscillogram needing to be detected as the input of the trained detection model, and outputting the fault type probability. According to the invention, the detection and diagnosis of the commutation failure fault of the DC power transmission system can be realized, and compared with the manual troubleshooting work of professional technicians, the working efficiency and the detection accuracy are improved.

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