System and method of diagnosing GIS (Gas Insulated Switchgear) mechanical defects based on abnormal vibration analysis
A mechanical defect and vibration analysis technology, which is applied in the direction of measuring vibration, vibration measurement in solids, and measuring devices, can solve the problems of the accuracy of detection results, the inability of ultra-high frequency sensors to suppress interference, etc., and achieve the effect of ensuring reliable operation
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[0047] The present invention is described in detail below in conjunction with accompanying drawing:
[0048] Such as figure 1 As shown, the vibration signal of the GIS shell is mainly transmitted by the vibration of its internal power transmission equipment. These power transmission equipment include circuit breakers, disconnectors, transformers, and busbars. Therefore, the vibration signals on the shell have the vibration signals of these equipment. vibration characteristics. figure 1 Among them, 1. indicates vibration caused by partial discharge, 2. indicates vibration caused by foreign objects, 3. indicates vibration caused by electromagnetic force and magnetostriction, 4. indicates vibration caused by electrostatic force, 5. indicates vibration caused by operation, and 6. indicates vibration Vibration caused by a short circuit to ground.
[0049] Vibration caused by partial discharges.
[0050] Since the foreign matter is too small compared to the shell, the effect of f...
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