High-voltage circuit breaker fault diagnosis method based on unsupervised learning model
A high-voltage circuit breaker, unsupervised learning technology, applied in instruments, character and pattern recognition, electrical testing/monitoring, etc., can solve problems such as noise interference, difficulty in monitoring work, and complex mechanical structure of circuit breakers
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[0051] The present invention is described in detail below in conjunction with accompanying drawing:
[0052] When the amplitude and frequency of the interference signal and the vibration signal are basically similar, it is difficult to distinguish the difference between the two by traditional monitoring methods. The coil current waveform during the opening and closing process of a high-voltage circuit breaker includes iron core stroke, iron core jam, coil state, opening and closing speed and the time it takes. Typical faults of high-voltage circuit breakers mainly include refusal faults and malfunction faults , Insulation and current-carrying faults and leakage, damage faults, etc., most of which are manifested as contact refusal to close or refusal to open.
[0053] There are actually difficulties in sampling, detecting and analyzing the vibration signal of the circuit breaker. The reason is that firstly, the circuit breaker has a very complicated mechanical structure and the...
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