Alternating current cable abnormal vibration monitoring method and device based on distributed sound wave sensing

The invention relates to an AC cable abnormal vibration monitoring method based on distributed sound wave sensing. The method comprises the following steps: acquiring a vibration signal of an alternating current cable based on distributed sound wave sensing vibration monitoring; sampling the vibration signal according to a preset vibration sampling frequency to obtain a sampling signal, the preset vibration sampling frequency being an integral multiple of a power frequency of AC cable power transmission; and the abnormal vibration position of the alternating-current cable is judged by performing data analysis on the sampled signals. By adopting the method, the influence of power frequency vibration during alternating-current cable power transmission can be eliminated. 本申请涉及一种基于分布式声波传感的交流电缆异常振动监测方法。所述方法包括：基于分布式声波传感振动监测，获取交流电缆的振动信号；根据预设的振动采样频率对振动信号进行采样，得到采样信号，所述预设的振动采样频率为交流电缆输电的工频的整数倍；通过对所述采样信号进行数据分析，判定交流电缆的异常振动位置。采用本方法能够消除交流电缆输电时工频振动的影响。