Analysis of Oscillation Modes Occurred by ON/OFF Time Intervals of Switching Equipments by the RCf Method

RCF 해석법을 사용한 스위칭 설비의 ON/OFF 시간간격에 의한 진동모드 해석

  • 김덕영 (군산대학 전자정보공학부) ;
  • 동무환 (군산대학 전자정보공학부 대학원) ;
  • 이윤호 (군산대학 전자정보공학부 대학원)
  • Published : 2006.01.01

Abstract

In this paper, the RCF(Resistive Companion Form) analysis method which is used to analyze small signal stability problems of non-continuous systems including switching devices. The RCF analysis method is mathematically rigorous and computes eigenvalue of the system periodic transition matrix based on discrete system analysis method. As an effect of switching operations, the eigenvalues of the systems are changed and newly unstable oscillation modes may be occurred. As an illustrating example, the oscillation modes of the system with different switching time intervals are computed exactly by the RCF analysis method and the results show that ON/OFF time intervals of switching equipments are important factors to make the system stable or unstable. This result shows that the RCF analysis method is very powerful to analyze small signal stability problems of power systems including switching devices such as FACTS equipments.

Keywords

References

  1. P. M. Anderson, A. A. Fouad, Power system control and stability, Iowa state press, 1994
  2. 'FACTS overview', IEEE power engineering society, 95TP 108, 1995
  3. Naring G. Hingorani, Laszlo Gyugyi, Understanding FACTS, IEEE Press, 1999
  4. R. Mohan Mathur, Raiiv K. Varma, Thyristor-based FACTS controllers for electrical transmission systems, Wiley Inter-science, 2002
  5. Yousin Tang, A P. Sakis Meliopoulos, 'Power system small signal stability analysis with FACTS elements', IEEE Trans. of power delivery, Vol. 12, No.3, pp.1352-1361, July 1997 https://doi.org/10.1109/61.637014
  6. Eugene V. Solodovnik, George J. Cokkinides, AP. Sakis Meliopoulos, 'On stability of implicit numerical methods in nonlinear dynamical systems simulation', IEEE winter meeting 1998
  7. Chin-Hsing Cheng, Yuan-Yih Hsu, 'Damping of generator oscillations using an adaptive static var compensator', Trans. on Power Systems, Vol. 7, No.2, May 1992