机械与电子2025，Vol.43Issue(4)：52-57,6.
基于数学形态滤波和SAO-VMD的混合线路故障测距方法
Hybrid Line Fault Location Method Based on Morphological Filtering and SAO-VMD
姜锋 1史明明 2倪俊贤 1杜嘉诚1
作者信息
- 1. 南京工程学院电力工程学院,江苏南京 211167
- 2. 国网江苏省电力有限公司电力科学研究院,江苏南京 211103
- 折叠
摘要
Abstract
A new fault location method based on mathematical morphological filtering and snow abla-tion optimizer(SAO)-variational mode decomposition(VMD)is proposed to solve the problem that the fault traveling wave head amplitude of the cable hybrid line in the distribution network is small and susceptible to noise interference.Firstly,mathematical morphology is used to denoise the fault traveling wave signal to suppress noise and enhance fault characteristics.Then,the SAO algorithm is used to opti-mize the number of modal decomposition K and the penalty factor α of the key parameters of VMD decom-position,and the best fault feature mode is extracted.Finally,the Teager energy operator(TEO)is used to calibrate the traveling wave head,obtain the arrival time of the traveling wave,and realize the fault loca-tion.PSCAD and MATLAB are used for modeling simulation and data processing.The experimental re-sults show that the method has strong tolerance to transition resistance and noise,and can effectively im-prove the accuracy of traveling wave head calibration.关键词
混合线路/形态学/雪消融优化算法/变分模态分解/故障测距Key words
mixed line/morphology/snow ablation optimization algorithm/variational mode decomposi-tion/fault location分类
动力与电气工程引用本文复制引用
姜锋,史明明,倪俊贤,杜嘉诚..基于数学形态滤波和SAO-VMD的混合线路故障测距方法[J].机械与电子,2025,43(4):52-57,6.
