Title :
Research on Fault Diagnosis and Protect Model for DC Traction Power Supply System Based on Traveling Wave Theory
Author :
Li, Xiaqing ; Guo, Shuyou ; Zhou, Yiming ; Li, Yunhua ; Fan, Shengtao
Author_Institution :
Dept. of Electr. Eng., Beijing Inst. of Petrochem. Technol.
Abstract :
The paper analyses the limitation of the differentiation i-delta I protection method. It puts forward traveling wave protection method for the DC power supply system that is based on interrelated characteristics of the traveling wave and the unit impedance of the transmission line. The traveling wave protection method overcomes the disadvantage of the traditional method in which the protection action is affected by the overall impedance of the circuit, and thus improves the reliability and sensibility of the relay protection system. A great number of field tests are carried out and the research results are satisfactory
Keywords :
DC power transmission; fault diagnosis; power system reliability; power transmission faults; power transmission protection; relay protection; DC traction power supply system; differentiation i-delta I protection; fault diagnosis; relay protection system reliability; relay protection system sensibility; transmission line impedance; traveling wave protection; traveling wave theory; Distributed parameter circuits; Fault diagnosis; Impedance; Power supplies; Power system modeling; Power system protection; Power transmission lines; Protective relaying; Traction power supplies; Transmission line theory; fault diagnosis; subway; traveling wave protection;
Conference_Titel :
Robotics, Automation and Mechatronics, 2006 IEEE Conference on
Conference_Location :
Bangkok
Print_ISBN :
1-4244-0024-4
Electronic_ISBN :
1-4244-0025-2
DOI :
10.1109/RAMECH.2006.252723
