Open AccessSingle-phase Earth Fault Section Location Based on Differences’ Characteristics of Zero-sequence Currents in Distribution Network
Author(s) -
Xiaojing Hu,
Xudong He,
Xu Dan,
Yunqing An,
Yi Zhang,
Mei Li,
Situo Zhou,
Yuan Li,
Xiaofan Huang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/769/4/042029
Subject(s) - fault (geology) , transient (computer programming) , sequence (biology) , section (typography) , point (geometry) , ground , phase (matter) , distribution (mathematics) , geometry , topology (electrical circuits) , engineering , computer science , physics , geology , mathematics , mathematical analysis , electrical engineering , seismology , quantum mechanics , biology , genetics , operating system
When a single phase earth fault occurs in distribution network, the difference between the transient zero-sequence currents at the head of the non-faulty section before the fault point is small, and the non-faulty section after the fault point also has this feature, but the difference between the zero-sequence currents at the head of the section before and after the fault point is big. Based on this, a method for comparing the single-phase grounding fault section location in distribution network based on the difference of the transient zero-sequence current was proposed. Based on the known distribution network structure, the fault section table was compiled, then the transient zero-sequence currents difference at the head of each section were compared, the fault section could be selected. The simulation by PSCAD/EMTDC verified the reliability of the method.