Title :
A novel protection scheme for HVDC transmission line
Author :
Zheng Xiaodong ; Tai Nengling ; Yang GuangLiang ; Ding HaoYin ; Sun ShuJie ; Bo Zhiqian ; Li NaiHu
Author_Institution :
Electr. Power Eng. Dept., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
The formation of the transient capacitive current and its effects on the HVDC transmission line differential protection is analyzed based on the wave propagation principle in this paper. The magnitude of capacitive current in the transient process of DC line fault is directly proportional to the time difference of fault signal travelling to both terminals of the line. Based on that, a novel HVDC differential protection scheme considering transient capacitive current compensation is proposed. Reliability and sensitivity of DC differential protection is effectively improved by reasonable compensation of the time difference. Large numbers of simulation results have proved that the proposed protection scheme is suitable for HVDC transmission line.
Keywords :
HVDC power transmission; compensation; power system transients; power transmission faults; power transmission lines; power transmission protection; power transmission reliability; wave propagation; DC differential protection sensitivity; DC line fault transient process; HVDC transmission line differential protection scheme; capacitive current magnitude; fault signal time difference; protection scheme; reliability; transient capacitive current; transient capacitive current compensation; wave propagation principle; Automation; Capacitance; Delay; HVDC transmission; Power transmission lines; Transient analysis; HVDC; transient capacitive current; transmission line protection; wave propagation;
Conference_Titel :
Advanced Power System Automation and Protection (APAP), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-9622-8
DOI :
10.1109/APAP.2011.6180423
