摘要
当前对于中压电力电缆故障诊断多采用变分模态分解算法,该方法易受到电缆参数自由度的影响,使得诊断准确性较低。为此,提出基于小波变换的中压电力电缆故障诊断方法。根据电力电缆仿真结构,对电缆运行参数进行采集与拓展计算,基于小波变换将采集到的数据进行预处理,根据预处理后的参数构建电缆故障诊断模型,将模型计算得出的数值与故障阈值进行比较,以此实现对电缆故障的诊断。仿真对比实验结果表明,所提方法能够更加准确地实现电缆故障诊断,诊断准确性更高。
Currently,the variational mode decomposition algorithm is commonly used for the fault diagnosis of medium voltage power cables,which is susceptible to the influence of degrees of freedom of cable parameters,resulting in low diagnostic accuracy.Therefore,a fault diagnosis method for medium voltage power cables based on the wavelet transform is proposed.Based on the simulation structure of power cables,the operating parameters of the cables are collected and expanded for calculation.The collected data is preprocessed by using the wavelet transform,and a cable fault diagnosis model is constructed based on the preprocessed parameters.The calculated values of the model are compared with the fault threshold to achieve the diagnosis of cable faults.The simulation comparison experimental results show that the proposed method can more accurately diagnose cable faults with higher diagnostic accuracy.
作者
张久超
ZHANG Jiuchao(Tianjin International Engineering Branch of China Railway 18th Bureau Group Corporation Limited,Tianjin 300222,P.R.China)
出处
《重庆电力高等专科学校学报》
2024年第1期5-8,19,共5页
Journal of Chongqing Electric Power College
关键词
小波变换
中压电力电缆
电缆故障
故障诊断
wavelet transform
medium voltage power cable
cable fault
fault diagnosis
