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High-voltage circuit breaker fault diagnosis method based on PCA-SVM

A PCA-SVM, high-voltage circuit breaker technology, applied in the direction of circuit breaker testing, instruments, measuring devices, etc., can solve problems such as fault classification of high-voltage circuit breakers

Active Publication Date: 2020-06-16
NANJING INST OF MECHATRONIC TECH
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Problems solved by technology

The invention provides a high voltage circuit breaker fault diagnosis method based on PCA-SVM to solve the problem of high voltage circuit breaker fault classification

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  • High-voltage circuit breaker fault diagnosis method based on PCA-SVM
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  • High-voltage circuit breaker fault diagnosis method based on PCA-SVM

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Embodiment Construction

[0077] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0078] The present invention provides a high-voltage circuit breaker fault diagnosis method based on PCA-SVM, and the principle flow of the overall algorithm of the present invention is as follows figure 1 As shown, the algorithm steps are as follows:

[0079] Step 1: Detect the opening and closing coil current of the high-voltage circuit breaker during operation under different mechanical faults, and use the array sensor to detect the vibration signal of the circuit breaker beam at the same time, obtain the vibration signals of the circuit breaker beam of multiple channels, and establish the high voltage Database of circuit breaker current signal and vibration signal;

[0080] Step 2: Extract the time-domain and frequency-domain features of the current signal of the high-voltage circuit breaker and the vibration signals of different channels; ...

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Abstract

The invention relates to a high-voltage circuit breaker fault diagnosis method based on PCA-SVM. The method comprises the steps: firstly, detecting switching coil currents of a high-voltage circuit breaker in the operation process under different mechanical faults; detecting a vibration signal of the circuit breaker cross beam through an array sensor, and obtaining vibration signals of circuit breaker crossbeams of multiple channels; extracting time domain features and frequency domain features of current signals of the high-voltage circuit breaker and vibration signals of different channels,and then optimizing the features by using PCA; and finally performing fault classification on the high-voltage circuit breaker by using SVM of a voting method.

Description

technical field [0001] The invention relates to the field of high-voltage circuit breaker fault diagnosis, and particularly designs a high-voltage circuit breaker fault diagnosis method based on PCA-SVM. Background technique [0002] Under the requirements of increasingly complex power system reliability and utilization rate, high-voltage circuit breakers are important protection and control equipment in the power system, and their operating status directly affects the stability and safety of the power system. [0003] Since the vibration signal of the high-voltage circuit breaker is less attenuated when it propagates in the metal parts, the vibration signal of the high-voltage circuit breaker can be used to diagnose the mechanical failure of the high-voltage circuit breaker. However, the selection of the measurement point of the vibration signal is flexible, so It is necessary to design an array sensor to detect the vibration signal of the high voltage circuit breaker. Dur...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327G01D21/02
CPCG01R31/3275G01D21/02
Inventor 张海红许璐武建卫
Owner NANJING INST OF MECHATRONIC TECH
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