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A Fault Diagnosis Method of Power Systems Based on Gray System Theory

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  • Huang Darong
  • Tang Jianping
  • Zhao Ling

Abstract

To provide some decision-making suggestions for fault diagnosis in power systems, a new model for identifying fault component is constructed by using Gray theory. Firstly, the basic concepts of Gray theory are introduced and explained in detail. And then the recognition algorithm of the power supply interrupted districts and the assignment principle of fault state vectors are depicted according to the working principle of protective relays (PRs) and circuit breakers (CBs). Secondly, based on the concept of the Gray correlation degree, the fault information explanation degree model is constructed and the judging method of malfunction and rejection for PRs and CBs is established. Meanwhile, to achieve the goal of the fault diagnosis, the fault diagnosis procedure that determined which components malfunction is designed for power systems. Finally, some simple experiments have already verified that the proposed method and model are effective and reasonable and the trend of further research is analyzed and summarized.

Suggested Citation

  • Huang Darong & Tang Jianping & Zhao Ling, 2015. "A Fault Diagnosis Method of Power Systems Based on Gray System Theory," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-11, June.
    • Handle: RePEc:hin:jnlmpe:971257
    DOI: 10.1155/2015/971257
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