A big data-based power cable operation vibration health monitoring system

Abstract

The present invention proposes a big data-based power cable running vibration health monitoring system, including a vibration detection sensor group, the vibration detection sensor group passes through a signal acquisition circuit and a signal processor; the signal noise reduction processor through a signal acquisition The circuit obtains the vibration signal detected by the vibration detection sensor group, and performs noise reduction processing on the vibration signal to obtain the vibration characteristic signal of the power cable; it also includes a vibration amount identification processor, which is used to obtain the vibration characteristic signal, And the vibration characteristic information included in the vibration characteristic signal is identified to obtain the vibration amount. The power cable operation vibration health monitoring system designed by the present invention greatly improves the existing cable line monitoring means, and can also analyze the influence of the vibration of the power cable operation process on the metal sleeve and the insulating layer through long-term data accumulation, and the above-mentioned The power cable operation vibration health monitoring system has high monitoring accuracy and reasonable and reliable evaluation results.

Description

technical field [0001] The invention relates to the technical field of vibration health monitoring, in particular to a big data-based power cable running vibration health monitoring system. Background technique [0002] At present, there is no monitoring and analysis system and equipment specifically for the vibration quantity (such as vibration frequency, vibration attenuation and damping ratio, mode shape) of power cable lines, and there is no application of related vibration monitoring systems to the vibration monitoring and analysis of cable lines. . For power cable lines, especially high-voltage and ultra-high-voltage power cables with large conductor cross-sections, certain vibrations are generated under the action of load current and system voltage during operation. For cable lines laid under special conditions, especially cable lines under bridge conditions, the vibration of the external environment will be transmitted to the cable lines when vehicles, etc. pass by....

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The Empirical Mode Decomposition (EMD) algorithm is defined by the algorithm process rather than by a definite theoretical formula, so it is very difficult to conduct an accurate theoretical analysis on it. At present, we can only use a large number of digital simulation experiments to continuously test its performance. Deep research

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