Title :
Microprocessor implementation of fast Walsh-Hadamard transform for calculation of symmetrical components
Author :
Sharma, P. ; Ahson, S.I. ; Henry, J.
Author_Institution :
Indian Inst. of Technol., New Delhi, India
Abstract :
A microprocessor-based algorithm for the calculation of symmetrical components of a three-phase system is presented. The symmetrical component transformation is applied to the input waveform, and the harmonic content in the sequence components thus obtained is filtered out by using the fast Walsh-Hadamard transform. The algorithm is fast and accurate and the three sequence components can be calculated in 3/4th of a cycle after fault occurrence.<>
Keywords :
harmonics; power system analysis computing; transforms; fast Walsh-Hadamard transform; fault occurrence; harmonic content; input waveform; microprocessor-based algorithm; sequence components; symmetrical components; three-phase system; Adaptive filters; Circuit faults; Convergence; Digital filters; Frequency; Microprocessors; Power harmonic filters; Power system harmonics; Sampling methods; Signal processing algorithms;
Journal_Title :
Proceedings of the IEEE
