中国电机工程学报2024,Vol.44Issue(1):85-94,中插7,11.DOI:10.13334/j.0258-8013.pcsee.221924
基于台区剩余电流监测的接线错误用户漏电故障定位
Leakage Fault Location of Users With Abnormal Wiring Based on Residual Current Monitoring in Serving Zone of Distribution Transformer
摘要
Abstract
Locating leakage faults in low-voltage distribution system is a bottleneck of power utilities.Abnormal wiring of neutral line and earth line of user is common in real world.It could cause leakage current larger than threshold of residual current devices(RCD),leading to nuisance tripping.Since it is rather difficult to locate fault results in residual current,a large number of RCDs are put out of service,which endangers users'safety at large.Frequency characteristics of arc current induced by insulation failure have been investigated thoroughly in existing literature.However,impact of user of wiring fault has not been analyzed.Fluctuation of leakage current with and without users of abnormal wiring in TT earthed distribution system is analyzed.It is found that the leakage current is determined by the load current of the anomaly user at large.A residual current monitoring based approach is proposed in the paper to locate users of abnormal wiring with data mining of leakage current and load current of users.Users who have a significant impact on the residual current with high degree of significance will be identified as users of abnormal wiring.Numerical simulation of experimental data demonstrates performance of the proposed approach.关键词
漏电故障/接线错误/剩余电流/故障定位/回归分析Key words
leakage failure/abnormal wiring/residual current/fault location/regression analysis分类
信息技术与安全科学引用本文复制引用
赖志强,李彬,李文松,舒一飞,苏盛..基于台区剩余电流监测的接线错误用户漏电故障定位[J].中国电机工程学报,2024,44(1):85-94,中插7,11.基金项目
国家自然科学基金项目(51777015) (51777015)
湖南省自然科学基金项目(2022JJ60089) (2022JJ60089)
湖南省教育厅重点项目(19A011).Project Supported by National Natural Scientific Foundation of China(51777015) (19A011)
Natural Science Foundation of Hunan Province(2022JJ60089) (2022JJ60089)
Key Projects of Hunan Provincial Department of Education(19A011). (19A011)