Pseudo load model-based power system identification for eigenvalue estimator

Hisayuki Hiraiwa, Hiroumi Saitoh, Kunio Sakamoto, Yoshihiko Satoh, Junichi Toyoda

研究成果: Article査読

3 被引用数 (Scopus)


This paper discusses an eigenvalue estimation method suitable for wide-area and real-time stability monitoring of large power systems. Eigenvalues corresponding to electromechanical dynamics can be obtained from system matrix identified based on synchronized measurements of rotor angles and rotor speeds of generators and load fluctuations. One problem to actualize the eigenvalue estimation is high equipment cost of measuring enormous number of load fluctuations. In the paper, in order to solve the problem, we propose a new concept of pseudo load model which is assumed to express dynamical characteristics of loads. By introducing the load model, the composite dynamics of power systems and loads is identified from the synchronized measurements of only machines. Even if the load fluctuations do not have white noise characteristics, the eigenvalues can be obtained based on the composite dynamics identification. In the paper, the effectiveness of the pseudo load model in eigenvalue estimations is confirmed by simulation studies using 3-machine power system model.

ジャーナルIEEJ Transactions on Power and Energy
出版ステータスPublished - 2007

ASJC Scopus subject areas

  • エネルギー工学および電力技術
  • 電子工学および電気工学


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