Classification of power quality disturbances using wavelet and fuzzy support vector machines

• Published in: 2005 International Conference on Machine Learning and Cybernetics Vol. 7; pp. 3981 - 3984 Vol. 7
• Main Authors: Guo-Sheng Hu, Jing Xie, Feng-Feng Zhu
• Format: Conference Proceeding
• Language: English
• Published: IEEE 2005
• Subjects: classification; Fourier transforms; Fuzzy support vector machine; Power engineering; Power quality; power quality disturbance; Power system analysis computing; Power system harmonics; Power system transients; Support vector machine classification; Support vector machines; Voltage fluctuations; Wavelet analysis
• ISBN: 0780390911; 9780780390911
• ISSN: 2160-133X
• DOI: 10.1109/ICMLC.2005.1527633

In this paper, wavelets and fuzzy support vector machines are used to automated detect and classify power quality (PQ) disturbances. Electric power quality is an aspect of power engineering that has been with us since the inception of power systems. The types of concerned disturbances include voltage sags, swells, interruptions, switching transients, impulses, flickers, harmonics, and notches. Fourier transform and wavelet analysis are utilized to denoise the digital signals, to decompose the signals and then to obtain eight common features for the sampling PQ disturbance signals. A fuzzy support vector machines is designed and trained by 8-dimension feature space points for making a decision regarding the type of the disturbance. Simulation cases illustrate the effectiveness.