Title :
HHT based non-unit transmission line protection using traveling wave
Author :
Qin, Xiao´an ; Zeng, Xiangjun ; Zhang, Yijie ; Wu, Zhihua
Author_Institution :
Sch. of Sci. & Inf. Eng., Changsha Univ. of Sci. & Technol., Changsha, China
Abstract :
A novel line non-unit protection principle based on traveling wave is proposed in the paper, it measures the instantaneous frequency of traveling wave crest at the point of transmission line near the line trap. If the frequency is large than the lower cut off frequency of line trap, internal fault is thus detected. The influence of line trap for the instantaneous frequency is also investigated. Hilbert-Huang Transform (HHT) is used in extracting the special frequency signals. Theoretical analysis and EMTP simulation results show the protection is correction.
Keywords :
EMTP; Hilbert transforms; power system protection; power transmission lines; EMTP; Hilbert-Huang transform; internal fault; non-unit protection principle; non-unit transmission line protection; traveling wave; Analytical models; Frequency; Paper technology; Power system faults; Power system measurements; Power system protection; Power system stability; Power system transients; Signal analysis; Signal processing; HHT; non-unit protection; protective relay; traveling wave protection;
Conference_Titel :
Power & Energy Society General Meeting, 2009. PES '09. IEEE
Conference_Location :
Calgary, AB
Print_ISBN :
978-1-4244-4241-6
DOI :
10.1109/PES.2009.5275255
