Hybrid System Reduction Method using Reduced System Regulator

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  • Kuroda Eisuke
    Graduate School of Engineering, Yokohama National University
  • Tsuji Takao
    Graduate School of Engineering, Yokohama National University
  • Oyama Tsutomu
    Graduate School of Engineering, Yokohama National University

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Other Title
  • 縮約系統調整器を用いたハイブリッド型系統縮約手法
  • シュクヤク ケイトウ チョウセイキ オ モチイタ ハイブリッドガタ ケイトウシュクヤク シュホウ
  • Hybrid system reduction method using a reduced system regulator

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In order to analyze transient stability of large-scale power systems, it is advantageous to apply system reduction method to external systems. Short-circuit current method is one of the typical engineering reduction techniques. However, the dominant eigenvalues are not necessarily conserved in the reduced system. Therefore, the hybrid reduction method in which controller parameters are adjusted to conserve the dominant eigenvalues was proposed. Automatic voltage regulator (AVR) and power system stabilizer (PSS) have been used for parameters adjustment so far. However, since there are many parameters in AVR and PSS, complicated procedures are required to adjust them. Therefore, in this paper, the reduced system regulator (RSR) is proposed for hybrid system reduction method. The RSR has only two parameters for adjustment. It is easier to adjust the RSR than AVR/PSS. In addition, the initial gains of the RSR are set zero so that dynamic behavior of the system is not influenced before the adjustment. The effect and the accuracy of the hybrid system reduction method with RSR are examined using a typical longitudinal power system, IEEJ WEST 10-machine system model.

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