Title :
Digital filters applied to computer relaying [of power lines]
Author :
Coury, D.V. ; Brito, H.G.F.
Author_Institution :
Dept. of Electr. Eng., Sao Paulo Univ., Brazil
Abstract :
This work presents a comparative study of some well established digital filtering techniques for the extraction of fundamental components (60 Hz) from highly corrupt voltage and current waveforms. This study is vital for the development of algorithms applied to the digital protection of power transmission lines. The studied techniques are based on the discrete Fourier transform, Walsh functions as well as Kalman filtering
Keywords :
Kalman filters; Walsh functions; digital filters; discrete Fourier transforms; filtering theory; power system relaying; power transmission control; power transmission lines; power transmission protection; relay protection; Kalman filtering; Walsh functions; corrupt current waveforms; corrupt voltage waveforms; digital filtering techniques; digital protection algorithms; discrete Fourier transform; fundamental components extraction; power system protection automation; power transmission line relay protection; Circuit faults; Digital filters; Digital relays; Discrete Fourier transforms; Filtering; Power harmonic filters; Power system harmonics; Power system protection; Power transmission lines; Voltage;
Conference_Titel :
Power System Technology, 1998. Proceedings. POWERCON '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4754-4
DOI :
10.1109/ICPST.1998.729248
