A Practical Power System Stabilizer Tuning Method and its Verification in Field Test

  • Shin, Jeong-Hoon (Korea Electric Power Company (KEPCO) Research Institute) ;
  • Nam, Su-Chul (Korea Electric Power Company (KEPCO) Research Institute) ;
  • Lee, Jae-Gul (Korea Electric Power Company (KEPCO) Research Institute) ;
  • Baek, Seung-Mook (Korea Electric Power Company (KEPCO) Research Institute) ;
  • Choy, Young-Do (Korea Electric Power Company (KEPCO) Research Institute) ;
  • Kim, Tae-Kyun (Korea Electric Power Company (KEPCO) Research Institute)
  • Received : 2010.03.30
  • Accepted : 2010.05.10
  • Published : 2010.09.01


This paper deals with parameter tuning of the Power System Stabilizer (PSS) for 612 MVA thermal power plants in the KEPCO system and its validation in a field test. In this paper, the selection of parameters, such as lead-lag time constants for phase compensation and system gain, is optimized using linear and eigenvalue analyses. This is then verified through the time-domain transient stability analysis. In the next step, the performance of PSS is finally verified by the generator's on-line field test. After the field test, measured and simulated data are also compared to prove the effectiveness of the models used in the simulations.


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