A Novel One-Terminal Single-Line-to-Ground Fault Location Algorithm in Transmission Line Using Post-Single-Phase-Trip Data
Geng Jianzhao,Wang Bin,Dong Xinzhou
State Key Lab of Control and Simulation of Power Systems and Generation Equipments Department of Electrical Engineering Tsinghua University Beijing 100084 China
Abstract:Traditional single-terminal impedance-based fault location methods always have a low accuracy due to the influence of the fault transition resistance and remote terminal system impedance. Since single-phase-trip for single-line-to-ground fault is widely applied in the transmission line, while the opposite terminal system information can be available in this open-phase operation status, it is possible to accurately pinpoint the fault using this extra information. However, existing post-single-
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