Detection and classification of power quality events using multiwavelets
Source: International Journal of Energy Technology and Policy, Volume 5, Number 6, 5 November 2007 , pp. 673-683(11)
Publisher: Inderscience Publishers
Abstract:Wavelet transforms have fundamentally been used to detect the major features of power quality events, as the transforms adapt to dynamic signals and are appropriate for capturing time‐localised, short‐period phenomena. The multiwavelets technique is proposed here to classify power quality events. This leads to easy extraction of a quality feature set, which is further used for classification and decision making. The proposed classification has three stages. The events detected from the test data are in accordance with the IEEE standards first stage. Two subclassifiers with different confidence levels have been used, along with the Dempster‐Shafer classifier, which works as the decision‐maker. The two subclassifiers are the chi‐square distribution and Heuristic classifier.
Document Type: Research Article
Affiliations: 1: Department of Electrical Engineering, D.C.R. University of Science & Technology, Murthal, Haryana, India. 2: Y.M.C.A. Institute of Engineering & Technology, Faridabad, Haryana, India. 3: Department of Electronics Engineering, Delhi College of Engineering, New Delhi, India. 4: Department of Electrical Engineering, Amity University, Noida (Uttar Pardesh), India
Publication date: November 5, 2007
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