Title :
Simulation and algorithm development of protection scheme in DC traction system
Author :
Li, M.X. ; He, J.H. ; Bo, Z.Q. ; Yip, H.T. ; Yu, L. ; Klimek, A.
Author_Institution :
Beijing Jiaotong Univ., Beijing, China
Abstract :
This paper presents a simulation model of DC traction system which is based on bilateral power supply mode. The model of two substation rectifiers in one track section has been proposed which is according to practical situation. The modeling was conducted with respect to the variations of the starting-up process and short circuit conditions. By comparing and investigating the simulation results of short circuit current and the train starting current, more effective algorithms such as DDL protection has been proposed. The paper presents the principle and analysis of DDL protection scheme, which shows effectiveness of DDL protection for fault detection and discrimination against train starting currents in the DC transit system.
Keywords :
fault diagnosis; railway electrification; short-circuit currents; traction power supplies; DDL protection; bilateral power supply mode; dc traction system; dc transit system; fault detection; protection scheme; short circuit conditions; short circuit current; starting-up process; substation rectifier; train starting current; Circuit faults; Power system modeling; Power system protection; Power system reliability; Rail transportation; Rectifiers; Short circuit currents; Substations; Traction power supplies; Voltage; DC traction system; DDL protection; short circuit currents; train starting current;
Conference_Titel :
PowerTech, 2009 IEEE Bucharest
Conference_Location :
Bucharest
Print_ISBN :
978-1-4244-2234-0
Electronic_ISBN :
978-1-4244-2235-7
DOI :
10.1109/PTC.2009.5282111
