Title :
The research on main protection for DC feeder line of subway
Author :
Xiaohong, Wang ; Qunzhan, Li ; Xiaochuan, Chen
Author_Institution :
Electr. Eng., Southwest Jiaotong Univ., Chengdu, China
Abstract :
This paper evaluates all kinds of main protections for DC feeder line of subway and points out their drawbacks. On the base of analyzing characteristics of current under tow load and short-circuit in DC traction power supply of subway, it presents a main protection-rate-of-current-rise protection (di/dt- Δ I). Then, the characteristics of ROR (rate-of-current-rise) protection and the principle of setting are given. By simulation, it is proved that the design of ROR protection is rational.
Keywords :
DC power transmission; power distribution protection; railways; rapid transit systems; traction power supplies; DC feeder line protection; DC traction power supply; delay tripping; instantaneous tripping; protection-rate-of-current-rise protection; rate-of-current-rise protection; short-circuit; subway; tow load; Circuit simulation; Cities and towns; Delay; Manufacturing; Power supplies; Power system protection; Production; Rail transportation; Railway safety; Vehicles;
Conference_Titel :
Autonomous Decentralized System, 2002. The 2nd International Workshop on
Print_ISBN :
0-7803-7624-2
DOI :
10.1109/IWADS.2002.1194695
