New Algorithms for Computer Based Power System Measurements for Relaying |
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| Authors: | P K Dash A K Panigrahi H P Khincha A M Sharaf |
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| Affiliation: | 1. Regional Engineering College , Rourkela , India;2. Indian Institute of Science , Bangalore, India;3. University of New Brunswick , New Brunswick , Canada |
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| Abstract: | Abstract The paper presents two new algorithms for power system measurements for computer relaying. The algorithms involve the design of a discrete-time digital filter which interpolates the signal samples and generates Fourier Co-efficients either by using spectral observations or a functional expansion technique. Sample designs are presented for voltage and current phasor estimation during system transients. A method for including decaying dc and harmonic frequency components in the filter design is also described in the paper. Both computational and on-line test results using an LSI-11/23 microcomputer for power system phasor estimation are presented in the paper. |
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