Title :
A new algorithm of the ultra-high-speed directional relay
Author :
Yuan, Rongxiang ; Chen, Deshu ; Zhang, Zhe ; Yin, Xianggen ; Ma, Tianhao
Author_Institution :
Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
A new directional relay algorithm for high voltage line is proposed using generalized phasor and symmetrical component method. The algorithm can judge the direction of fault from calculating the phase difference between voltage and current in a shorter time. Its speed is faster than the conventional directional protection based on the industrial frequency fault component. Its reliability is higher than the travelling-wave protection. It has high sensitivity
Keywords :
power system relaying; power transmission faults; power transmission lines; power transmission protection; relay protection; fault direction; generalized phasor method; high-voltage power line; industrial frequency fault component; protection reliability; protection sensitivity; symmetrical component method; ultra-high-speed directional relay algorithm; Equations; Frequency; Power system protection; Power system relaying; Power system reliability; Power system security; Power system transients; Protective relaying; Relays; Voltage;
Conference_Titel :
Power Engineering Society Winter Meeting, 2000. IEEE
Print_ISBN :
0-7803-5935-6
DOI :
10.1109/PESW.2000.847654
