重庆工商大学学报（自然科学版）2024，Vol.41Issue(3)：72-80,9.DOI:10.16055/j.issn.1672-058X.2024.0003.010
基于时间线性拟合的地缆架空混合线路的行波故障定位
Traveling Wave Fault Location of Mixed Lines of Ground and Overhead Cables Based on Time Linear Fitting
杨岸 1许鹏坤1
作者信息
- 1. 安徽理工大学电气与信息工程学院,安徽淮南 232001
- 折叠
摘要
Abstract
Objective This paper investigated the traveling wave fault location in n-section ground-overhead mixed transmission lines and proposed a traveling wave fault location method based on time linear fitting.Methods Firstly,the fault area was determined to identify the region where the fault occurred.Next,different wave impedance lines were normalized to reduce ranging errors caused by different wave speeds.Finally,the time linear fitting method was used to accurately locate the fault.Results This method addressed the difficulty in identifying the initial traveling wave head and reduced ranging errors caused by changes in traveling wave speed with transmission distance.Conclusion A simulation model of a 500 kV ground-overhead mixed transmission line was built in MATLAB/Simulink.The experimental validation results demonstrate that this fault location method can effectively overcome the inapplicability of the dual-end traveling wave ranging method due to different wave speeds and ultimately achieve precise fault location.关键词
混合线路/线性拟合/归一化处理/双端行波/故障定位Key words
mixed lines/linear fitting/normalization/dual-end traveling wave/fault location分类
信息技术与安全科学引用本文复制引用
杨岸,许鹏坤..基于时间线性拟合的地缆架空混合线路的行波故障定位[J].重庆工商大学学报（自然科学版）,2024,41(3):72-80,9.
