东北电力技术2024，Vol.45Issue(10)：26-33,8.
基于动态时间弯曲距离的主动配电网故障定位研究
Research on Active Distribution Network Fault Location Based on Dynamic Time Warping Distance
摘要
Abstract
In view of the small current grounding fault in distribution network with distributed generation(DG),the amplitude of fault current is relatively small and the electrical characteristics are not obvious.It adopts the algorithm of dynamic time warping(DTW)dis-tance to locate the fault in small current grounding system with DG.Firstly,after single-phase ground fault in the system,it analyzes the characteristics of transient zero sequence current of fault line and non fault line,as well as the influence of transient zero sequence current after DG connection.Secondly,it introduces the algorithm of DTW distance algorithm to measure the similarity degree of transi-ent zero sequence current on both sides of the line,calculates and the DTW value.It can distinguishes the fault section accurately by comparing with the set threshold value.Finally,the simulations show that the proposed method can locate the fault section accurately with the different closing angles,the different grounding modes,the different transition resistances and the different capacities of DG.关键词
配电网/小电流接地系统/分布式电源/暂态零序电流/动态时间弯曲距离Key words
distribution network/small current grounding system/DG/transient zero sequence current/DTW distance分类
信息技术与安全科学引用本文复制引用
宋文宇,徐艳春,左豪杰,席磊,MI Lu..基于动态时间弯曲距离的主动配电网故障定位研究[J].东北电力技术,2024,45(10):26-33,8.基金项目
国家自然科学基金(52277108) （52277108）
