Analysis of electromechanical oscillations and extended phase compensation design of power system stabilizer for bisotoun power plant

M. Parniani, Gh Zafarabadi, Mohammad Rasouli, P. Ansarimehr

Research output: Contribution to journalArticle


In this paper, performance of power system stabilizer (PSS) of a large thermal power plant, as tuned by the manufacturer, is investigated. Then, the stabilizer is redesigned based on extended phase compensation of the exciter input - electrical torque transfer function and root locus analysis; and its effect on local, interplant and inter-area electromechanical oscillations is thoroughly analyzed. As Bisotoun PSS has a special structure with two inputs, frequency and power, its performance is compared with power-speed PSS. The effect of PSS with existing and new tunings on transient stability is also studied. Simulation results are verified by experimental test records.

Original languageEnglish (US)
Pages (from-to)11-18
Number of pages8
JournalIranian Journal of Electrical and Computer Engineering
Issue number1
Publication statusPublished - Dec 1 2007


All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Electrical and Electronic Engineering

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