摘要
高压输电线路在传输电力时容易受到周围环境的影响,不仅可能造成生活供电的影响更有可能造成整个供电系统的瘫痪,造成人力物力上的损失。为了更好的获取纯净的输电线路上的行波故障信号,方便进一步对故障原因的研究,本文通过分析几种常见去噪方法的优缺点,选择了小波阈值去噪这种去噪方式。本论文通过对比4种不同的阈值函数的MATLAB仿真实验,选择出了输电线路上行波故障信号的最佳去噪方法。
High-voltage transmission line in the transmission of power is easy to be affected by the surrounding environment.It may not only cause the impact of the power supply of life,but also may cause the failure of the entire power supply system,and it may cause the loss of manpower and material resources.In order to obtain the pure traveling wave fault signal on the transmission line,it is convenient to further study the cause of the fault.This paper analyzes the advantages and disadvantages of several common de-noising methods,the wavelet threshold de-noising method is selected.By comparing the MATLAB simulation experiments of four different threshold functions,this paper chooses the best de-noising method for the fault signal of the transmission line upstream wave.
作者
王鑫恒
王佐勋
吕国辉
WANG Xin-heng;WANG Zuo-xun;LV Guo-hui(School of Electrical Engineering and Automation,Qilu University of Technology(shandong Academy of Sciences),Jinan 250353,China;Shandong Institute of Technology,Weifang 256410,China)
出处
《齐鲁工业大学学报》
2020年第2期57-62,共6页
Journal of Qilu University of Technology
基金
山东省研究生导师指导能力提升项目(SDYY17076)。
关键词
小波变换
小波阈值去噪
MATLAB仿真
阈值
wavelet transform
wavelet threshold de-noising
MATLAB simulation
threshold value
