Open AccessAnalysis of the influence of three-phase asynchronization recording on fault location of distribution network
Author(s) -
Kai Zhang,
Min Xu,
Xinhui Zhang,
Supeng Wang,
Wenhao Wu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2087/1/012070
Subject(s) - fault (geology) , mistake , reliability (semiconductor) , fault indicator , computer science , phase (matter) , real time computing , stuck at fault , reliability engineering , algorithm , fault detection and isolation , engineering , artificial intelligence , physics , power (physics) , quantum mechanics , seismology , political science , law , actuator , geology
In order to improve the practical effect of the fault location technology, it is necessary to analyze the error caused by the three-phase asynchronization of the fault indicator recording. The influence of the three-phase recording asynchronization on the fault location of the distribution network is analyzed from the aspects of the start-up criterion, the error level of the zero-sequence current and the zero-sequence voltage. The simulation results show that fault location devices of different principles are affected differently by the asynchronization recording. In order to avoid mistake start-up of the fault location device, the change value should be used to construct the fault location start-up criterion. Meanwhile, the measurement accuracy of transient fault characteristics will be affected to a certain extent by the asynchronization of the fault indicator recording, but it has little effect on the reliability of fault location, and it can even make the fault characteristics more obvious after the single- phase fault occurs.