Monitoring and Analysis of Nuclear Power Plant Signals Based on Nonlinear Dynamical Methodology

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The spatial correlation of a trajectory in the state space drawn by a dynamical system gives the information (fractal) dimension of the system, and enables the onset of the limit-cycle (or persistent) oscillation to be examined. On-line monitoring system with this methodology was established for a PWR-type nuclear power plant (NPP). The potential use of this methodology in monitoring NPP was tested from two actual situations in which anomaly developed. <BR>The spatial correlations of various NPP signals under normal operating conditions were calculated, yielding information unobtainable by conventional linear methodology. For example, results indicated that the coolant pump vibration was not linearly stabilized, that is, it was a limit-cycle oscillation. Swelling oscillation in the pressurizer pressure was also discovered by this methodology.

収録刊行物

  • Journal of nuclear science and technology  

    Journal of nuclear science and technology 34(3), 240-247, 1997-03-25 

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002076606
  • NII書誌ID(NCID)
    AA00703720
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00223131
  • NDL 記事登録ID
    4176275
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A460
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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