T-Shaped Transmission Line Fault Location Based on Phase-Angle Jump燙hecking

In order to effectively solve the dead-zone and low-precision of T-shaped transmission line fault location, a new location algorithm based on phase-angle jump checking is proposed in this paper. Firstly, 3-terminal synchronous fundamental positive sequence voltage current phasors are extracted substituted into branch distance function realize selection when occurs; Secondly, use condition phasor at point equal calculate all roots (including real root virtual roots); Finally, check used for calculation, then only can be determined as actual distance, thereby achieving purpose high-precision location. MATLAB simulation results show that feasible effective with high accuracy good versatility.