Adaptive harmonic estimation for power system protection

T.I. Haweel (Electrical Engineering Department, Assiut University, Assiut, Egypt)

Abstract

Many power system protection problems necessitate the measurement and track of the underlying current/voltage phasors. Adaptive LMS spectrum analyzers provide an ideal solution to such problems. This paper introduces a class of adaptive trigonometric spectrum analyzers. The underlying current/voltage is fed as a desired signal to an LMS adaptive algorithm. The reference input is a periodic regression derived from the basis set of the specified trigonometric discrete transform. The proposed algorithm is simple, computationally efficient, and exhibits a guaranteed stability and uniform convergence. A comparative study recommends the discrete Hartley transform. Simulations are provided to prove that the proposed spectrum analyzer is efficient in modeling faulty power system currents/voltages such as these arising from an over‐excitation of a power transformer.

Keywords

Citation

Haweel, T. (2000), "Adaptive harmonic estimation for power system protection", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 19 No. 4, pp. 1007-1015. https://doi.org/10.1108/03321640010347448

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MCB UP Ltd

Copyright © 2000, MCB UP Limited

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