대한전기학회논문지:전력기술부문A (The Transactions of the Korean Institute of Electrical Engineers A)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

유전 알고리즘을 이용한 강인한 $H_\infty$-QFT PSS 설계에 관한 연구

A Study on Design of Robust $H_\infty$-QFT PSS Using Genetic Algorithm

  • 정형환 (동아대 전기전자컴퓨터 공학부) ;
  • 이정필 (동아대 공대 정부기술연구소) ;
  • 박희철 (동아대 대학원 전기공학과) ;
  • 왕용필 (동아대 공대 정부기술연구소)
  • 발행 : 2003.07.01
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⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, a new design method of H$H_\infty$-Qn PSS using genetic algorithm(GA) is proposed to efficiently damp low frequency oscillations despite the uncertainties and various disturbances of power systems. The selection method of evaluation function is proposed for selecting the robust PSS parameters. All QFT boundaries are satisfied automatically and H$H_\infty$-norm is minimized simultaneously without trial and error procedure. The eigenvalues and the damping ratio of dominant oscillation mode are investigated to evaluate performance of designed controller for one machine infinite bus system. A disturbance attenuation performance is investigated through singular value bode diagram of the system. Dynamic characteristics are considered to verify robustness of the proposed PSS by means of nonlinear simulations under various disturbances for various operating conditions. The results show that the proposed PSS is more robust than conventional PSS.

키워드

참고문헌

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