High-voltage vacuum circuit breaker mechanical fault diagnosis method and system
A technology for vacuum circuit breakers and mechanical faults, applied in circuit breaker testing, mechanical component testing, instruments, etc., can solve problems affecting the validity of feature quantities, fixed time-frequency resolution, and large computational load, and achieve accurate judgment. , quick identification, simple structure effect
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[0041] The present invention is described in further detail below in conjunction with accompanying drawing:
[0042] combine figure 1 The steps of a method for diagnosing a mechanical fault of a high-voltage vacuum circuit breaker according to the present invention are specifically described, including the following steps:
[0043] Step 1. Establish an experimental platform for a high-voltage vacuum circuit breaker with an electromagnetic repulsion mechanism, and simulate 5 kinds of faults, namely: fault 1-control circuit voltage is too low (85% of rated voltage), fault 2-control circuit voltage is too high (110% of rated voltage ), fault 3-increased resistance of the control loop (simulated coil aging), fault 4-buffer jamming, fault 5-base fixing screws loose. After comprehensively analyzing the vibration signals at different positions of the circuit breaker, select positions 1 and 2 to install acceleration sensors to collect vibration signals, such as figure 2 shown. In ...
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