Fault Location Method for Overhead Feeders with Distributed Generation Units Based on Direct Load Flow Approach  

作　　者：Charalampos G.Arsoniadis Vassilis C.Nikolaidis 

机构地区：[1]Department of Electrical and Computer Engineering,Democritus University of Thrace,Xanthi 67100,Greece

出　　处：《Journal of Modern Power Systems and Clean Energy》2024年第4期1135-1146,共12页现代电力系统与清洁能源学报（英文）

基　　金：supported by the Hellenic Foundation for Research and Innovation(HFRI)under the HFRI Ph.D.Fellowship grant(No.1156)。

摘　　要：This paper proposes a novel fault location method for overhead feeders,which is based on the direct load flow approach.The method is developed in the phase domain to effectively deal with unbalanced network conditions,while it can also handle any type of distributed generation(DG)units without requiring equivalent models.By utilizing the line series parameters and synchronized or unsynchronized voltage and current phasor measurements taken from the sources,the method reliably identifies the most probable faulty sections.With the aid of an index,the exact faulty section among the multiple candidates is determined.Extensive simulation studies for the IEEE 123-bus test feeder demonstrate that the proposed method accu-rately estimates the fault position under numerous short-circuit conditions with varying prefault system loading conditions,fault resistances,and measurement errors.The proposed method is promising for practical applications due to the limited number of required measurement devices as well as the short computation time.

关 键 词：Fault location distribution system direct load flow distributed generation 

分 类 号：TM75[电气工程—电力系统及自动化]