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Classification of Underlying Causes of Power Quality Disturbances: Deterministic versus Statistical Methods

EURASIP Journal on Advances in Signal Processing volume 2007, Article number: 079747 (2007) Cite this article

Abstract

This paper presents the two main types of classification methods for power quality disturbances based on underlying causes: deterministic classification, giving an expert system as an example, and statistical classification, with support vector machines (a novel method) as an example. An expert system is suitable when one has limited amount of data and sufficient power system expert knowledge; however, its application requires a set of threshold values. Statistical methods are suitable when large amount of data is available for training. Two important issues to guarantee the effectiveness of a classifier, data segmentation, and feature extraction are discussed. Segmentation of a sequence of data recording is preprocessing to partition the data into segments each representing a duration containing either an event or a transition between two events. Extraction of features is applied to each segment individually. Some useful features and their effectiveness are then discussed. Some experimental results are included for demonstrating the effectiveness of both systems. Finally, conclusions are given together with the discussion of some future research directions.

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Authors and Affiliations

  1. STRI AB, Ludvika, 771 80, Sweden

    Math H.J. Bollen

  2. EMC-on-Site, Luleå University of Technology, Skellefteå, 931 87, Sweden

    Math H.J. Bollen

  3. Department of Signals and Systems, Chalmers University of Technology, Gothenburg, 412 96, Sweden

    Irene Y.H. Gu & Peter G.V. Axelberg

  4. The Hellenic Transmission System Operator, Athens, 17122, Greece

    Emmanouil Styvaktakis

Authors
  1. Math H.J. Bollen
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  2. Irene Y.H. Gu
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  3. Peter G.V. Axelberg
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  4. Emmanouil Styvaktakis
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Correspondence to Math H.J. Bollen.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://doi.org/creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Bollen, M.H., Gu, I.Y., Axelberg, P.G. et al. Classification of Underlying Causes of Power Quality Disturbances: Deterministic versus Statistical Methods. EURASIP J. Adv. Signal Process. 2007, 079747 (2007). https://doi.org/10.1155/2007/79747

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