電力系統の優勢固有値推定手法の精度向上対策に関する検討 Investigation of the Accuracy Improvement of Advanced Dominant Eigenvalue Estimation Method for Electric Power Systems

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The authors have been developing an estimation method of a dominant eigenvalue in large scale power systems using the measured data of the power system. A dominant eigenvalue means the eigenvalue due to long cycle oscillation mode between large scale power systems and has an important information on stability. This paper describes the basic principle of eigenvalue estimation method, the analysis of factors giving influence to accuracy and the accuracy improvement method. The result from the basic principle of eigenvalue estimation method shows that the estimated eigenvalue fluctuates in certain time domains and the accuracy is not satisfactory. The studies were made and it was clarified that frequencies lower than the frequency of the dominant eigenvalue are major sources for fluctuation and noise. In order to improve accuracy, a new method was proposed by applying maximum entropy method (MEM) to obtain power spectrum of maseaued data and by introducing new argorithm for descriminating signal from noise using MEM results. Results of applying the proposed method to dominant eigenvalue estimation show the accuracy was improved and the validity of the proposed method was verified.

収録刊行物

  • 電気学会論文誌. B, 電力・エネルギー部門誌 = The transactions of the Institute of Electrical Engineers of Japan. B, A publication of Power and Energy Society  

    電気学会論文誌. B, 電力・エネルギー部門誌 = The transactions of the Institute of Electrical Engineers of Japan. B, A publication of Power and Energy Society 128(2), 407-415, 2008-02-01 

    The Institute of Electrical Engineers of Japan

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被引用文献:  2件

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各種コード

  • NII論文ID(NAID)
    10021130269
  • NII書誌ID(NCID)
    AN10136334
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03854213
  • NDL 記事登録ID
    9364016
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-794
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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