Archive:: American Journal of Electrical Power and Energy Systems:: Science Publishing Group

Volume 4, Issue 1, January 2015

Detection and Identification of PQ Disturbances Using S-Transform and Artificial Intelligent Technique

Ahmed Hussain Elmetwaly, Abdelazeem Abdallah Abdelsalam, Azza Ahmed Eldessouky, Abdelhay Ahmed Sallam

Issue: Volume 4, Issue 1, January 2015

Pages: 1-9

Received: 5 February 2015

Accepted: 15 February 2015

Published: 2 March 2015

DOI: 10.11648/j.epes.20150401.11

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Abstract: This paper proposes a new technique based on S-transform time-frequency analysis and Fuzzy expert system for classifying power quality (PQ) disturbances. The S-transform is a new time frequency analysis method. It has the features of both continuous wavelet transform (CWT) and short time Fourier transform (STFT). Through S-transform time-frequency ... Show More

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Factors Affecting the Harmonics Generated by a Group of CFLs: Experimental Measurements

Muhyaddin J. H. Rawa, David W. P. Thomas

Issue: Volume 4, Issue 1, January 2015

Pages: 10-16

Received: 9 February 2015

Accepted: 26 February 2015

Published: 4 March 2015

DOI: 10.11648/j.epes.20150401.12

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Abstract: The penetration of nonlinear loads on power systems increases the harmonics that can cause detrimental problems to power systems such as an increase in voltage distortion, equipment failure, system resonance, increase system losses and decrease system efficiency. Many factors affect the harmonics produced by nonlinear loads. Hence, the aim of this ... Show More

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