| Abstract: | In order to analyze the transient stability of large‐scale power systems, it is advantageous to apply the system reduction method to external systems. The short‐circuit current method is a typical engineering reduction technique. 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 regulators (AVR) and power system stabilizers (PSS) have been used for parameter 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 the 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 to zero so that the dynamic behavior of the system is not influenced before adjustment. The effect and accuracy of the hybrid system reduction method with RSR are examined using a typical longitudinal power system, the IEEJ WEST 10‐machine system model. © 2012 Wiley Periodicals, Inc. Electr Eng Jpn, 179(4): 33–40, 2012; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/eej.21258 |
