Title :
A new protection criterion for high-voltage transmission line based on two-end transient signals
Author :
Yizhuang, Huang ; Xia Mngchao ; Woquan, Zhao ; Yinlai, Liu
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
A new criterion of high-speed protection for high voltage transmission line based on the wavelet transform of two-end data is presented. By comparing the Lipschitz exponent and time of the wavelet modulus maxima of voltages of both ends, in-zone faults and out-zone faults and switching operations can be distinguished. Simulations are carried out for testing the criterion, and the influences of fault locations and noises are discussed.
Keywords :
fault location; power transmission faults; power transmission lines; power transmission protection; switching; wavelet transforms; 500 kV; Lipschitz exponent; edge detection; fault identification; fault locations; high-speed protection; high-voltage transmission line; in-zone faults; noises; out-zone faults; protection criterion; switching operations; two-end transient signals; wavelet modulus maxima; wavelet transform; Discrete wavelet transforms; Power system protection; Power system reliability; Power system transients; Power transmission lines; Signal analysis; Transmission lines; Voltage; Wavelet analysis; Wavelet transforms;
Conference_Titel :
TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering
Print_ISBN :
0-7803-7490-8
DOI :
10.1109/TENCON.2002.1182711
