可再生能源2025，Vol.43Issue(6)：735-745,11.
基于插值辅助EMTR的风电场集电线故障定位
Fault location for wind farm collection lines based on interpolation-assisted EMTR
摘要
Abstract
The current difficulty in timely locating and eliminating short-circuit faults in wind farm collection lines can lead to waste of wind energy resources,resulting in the phenomenon of wind abandonment.In order to address this issue,a fault localization method for collection lines in wind farms based on interpolation-assisted Electromagnetic Time Reversal(EMTR)is proposed.Firstly,the superiority of applying EMTR theory to fault location of collection lines is elucidated,and the phenomenon of assuming that the density of fault points is limited by the sampling rate in existing EMTR fault ranging methods,which leads to ranging errors,is revealed;Then,based on the discussion of the compatibility between EMTR fault ranging method and interpolation idea,the interpolation idea is introduced to effectively improve the signal sampling rate,forming an interpolation assisted EMTR fault ranging method;Finally,a fault area discrimination matrix is constructed based on the topology of the collection line,and the characteristics of the matrix elements are analyzed for fault area identification and accurate fault localization.The simulation results demonstrate that the positioning scheme only requires a small number of measurement points to achieve accurate positioning,and the interpolation-assisted strategy can effectively overcome the problem of relatively insufficient sampling rate of the collection lines traveling wave,making the final positioning accuracy superior to the traveling wave method and existing EMTR fault ranging methods,meeting the requirements of wind farms for positioning accuracy.关键词
风电场/集电线/电磁时间反演/故障定位/插值辅助Key words
wind farm/collection lines/electromagnetic time reversal/fault location/interpolation assistance分类
能源与动力引用本文复制引用
魏源,朱永利,丁嘉..基于插值辅助EMTR的风电场集电线故障定位[J].可再生能源,2025,43(6):735-745,11.基金项目
国家自然科学基金(51677072). （51677072）
