| Title |
Performance verification on the Impedance Relay Method using Failure Simulator of AT Feeding System |
| Authors |
김완일(Wan-il Kim) ; 이계승(Kye-Seung Lee) ; 정노건(No-Geon Jung) ; 김재문(Jae-Moon Kim) |
| DOI |
http://doi.org/10.5370/KIEE.2018.67.2.325 |
| Keywords |
AT Feeding system ; Impedance method ; Fault locator ; Simulator ; Numeric analysis |
| Abstract |
In this paper, we investigated the impedance method for searching fault detection point in case of an accident in the AC electric railway AT feeding system. For this purpose, simulation circuit modeling and prototype hardware are made based on the known numerical analysis. As a result of simulation modeling of the feeding system based on the numerical analysis of the impedance method confirmed that the modeling was properly implemented with an average error rate of 0.07%. Also, as a result of fault event by hardware simulator, it was confirmed that the breaker operation time is shortened and the fault current is decreased while the voltage is close to the supply voltage in the transient state as the point of the fault accident moves away from the substation(SS). |