| Title |
A Discrimination Method of Ground Fault on Feeding Line using Current Phase Difference for AC Electrical Railway System |
| Authors |
이지혜(Jihye Lee) ; 민명환(Myung) ; 안태풍(Hwan Min) ; 이병곤(Tae) |
| DOI |
https://doi.org/10.5370/KIEE.2021.70.11.1737 |
| Keywords |
TF-R ground fault; AF-R ground fault; AT feeding method; AC electrical railway system; Fault Locator |
| Abstract |
When a fault generates on AT feeding line of AC electrical railway system, train operation service would be stopped on about 10km feeding line section at both ends of Auto-transformer. When a fault generates on AT feeding line of AC electrical railway system, train operation service would be stopped on about 10km feeding line section at both ends of Auto-transformer. To obtain varied information is important to take a action for a rapid restoration of AT feeding line. In this paper, it presents how to distinct type of ground fault using measured fault current based that angle of TF and AF current are almost in-phase in case of TF-R ground fault and almost antiphase in case of AF-R ground fault. The distinction method is verified on PSCAD/EMTDC simulation and real field of AT feeding line. |