机械与电子2024，Vol.42Issue(8)：7-14,8.
基于VMD和改进双端行波法的电缆故障测距研究
Research on Cable Fault Location Based on VMD and Improved Dual Terminal Traveling Wave Method
摘要
Abstract
To solve the large position error affected by wave velocity,noise,and end effects of the tradi-tional cable fault location method based on traveling wave,this paper proposes a fault location method based on variational mode decomposition(VMD)and improved dual terminal traveling wave methods.At first,the improved dual terminal traveling wave method is proposed to eliminate the influence of wave ve-locity on distance measurement.Then,the VMD method is used to solve the problems of modal aliasing and endpoint effects on the basis of wavelet denoising.Finally,accurate calibration of the wave head for ca-ble fault can be achieved by the Hilbert transform.Results indicate that the proposed cable fault location method based on the VMD and improved dual terminal methods can effectively mitigate the influence of wave velocity,distance,and transient resistance on the measurement error.Moreover,accurate calibration of cable fault location can be achieved.关键词
电缆故障/双端行波法/变分模态分解/小波去噪Key words
cable fault/dual terminal traveling wave methods/variational mode decomposition/wavelet de-noising分类
信息技术与安全科学引用本文复制引用
周国威,宋凯耀,刘海霞,王斌,赵帅..基于VMD和改进双端行波法的电缆故障测距研究[J].机械与电子,2024,42(8):7-14,8.基金项目
陕西省重点研发计划项目(2019TSLGY04-01) （2019TSLGY04-01）
国家电网有限公司科技项目资助(SGJBZJ00FZJS2311560) （SGJBZJ00FZJS2311560）
