Breaker fault diagnosis method based on separating/closing coil current signals
A technology for opening and closing coils and circuit breaker failures, which is applied in the field of electrical engineering and can solve problems such as misclassification and unreliable diagnosis results
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[0043] The present invention is mainly used for online self-detection of fault types, and the specific implementation is as follows:
[0044](1) Acquisition and processing of the original fault data set. Since the current signal of the opening and closing coil of the circuit breaker is easy to collect and has obvious characteristics, it can be used to judge a large amount of information in the process of opening and closing the circuit breaker, and can reflect many fault types of the circuit breaker control circuit, such as the operating mechanism is stuck, the iron core For some fault information such as jamming, insufficient coil power supply voltage, and excessively long empty travel of the iron core, the present invention selects the opening and closing coil current as the object of feature extraction. The present invention uses a Hall sensor to collect the current information of the opening and closing coils of the circuit breaker, and a typical current waveform is shown ...
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