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

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Voltage Stability Analysis Based on Energy Function Considering Tap of Transformer

변압기 탭이 반영된 에너지 함수를 이용한 전압안정도 해석

  • Published : 2005.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

An energy function is derived on the basis of the EMM(Equivalent Mechanical Model) to take account of the effects of tap changer, and then the VC(Voltage Collapse) criteria is proposed to predict the voltage collapse in Power systems. The VC criterion can be evaluated by using the energy margin given by the energy gap between UEP(Unstable Equilibrium Point) and SEP(Stable Equilibrium Point) of the energy function adopted, in which it is noted that the energy contour should be considered due to energy discontinuity associated with tap changing. This paper shows that the proposed VC criterion improves the accuracy of voltage stability analysis with application to a two-bus sample system.

Keywords

References

  1. C. L. DeMarco and T. J. Overbye, 'An Energy based security measure for assessing vulnerability to Voltage Collapse', IEEE Trans. on Power Systems Vol. 5, No. 2, May 1990 https://doi.org/10.1109/59.54548
  2. T. J. Overbye, M. A. Pai, P. W. Sauer, 'Some Aspects of the Energy Function Approach to Angle Voltage Stability Analysis in Power Systems', Proceedings of the 31st Conference on Decision and Control p.2941-2946 December 1992
  3. 이세정, 이병하, 원종률, '반복 조류 계산 기법에 의한 STATCOM 적용 전럭시스템의 전압 안정도 향상 연구', 대한전기학회 하계학술대회 논문집, p.146-148, 2001
  4. 주기성, 김진오, 'SVC 제어기에 의한 전압안정도 향상과 해석', 대한전기학회 하계학술대회 논문집, p.1308-1310, 1999
  5. 김재현, 김양일, 기경현, 정성원, 'STATCOM을 이용한 전력계통의 전압안정도 향상방안에 관한 연구', 대한전기학회 추계학술대회 논문집, p.255-258, 2003
  6. Juraj Medanic, 'Discrete Models of Slow Voltage Dynamics for Under Load Tap-Changing Transformer Coordination', IEEE Trans. on Power Systems, VoI.PWRS-2, No.4, pp.873-881, November 1987
  7. Chen Ching Liu, Khoi T. Vu, 'Analysis of Tap-Changer Dynamics and Contruction of Voltage Stability Regions', IEEE Trans. on Circuits and Systems, Vol. 36, No.4, p. 575-590, April 1989 https://doi.org/10.1109/31.92890
  8. D. Popovic, I. A. Hiskens, D. J. Hill, 'Investigations of Load-tap Changer Interaction', Electrical Power & Energy Systems Vol. 18, No.2, p.81-97 1996 https://doi.org/10.1016/0142-0615(94)00003-4
  9. Y.-H. Moon, H.-S. Ryu, J.-G. Lee, H.-J. Kook, 'Equivalent Mechanical Model of Power Systems for Energy-Based System Analysis', 40th CDC, p.466-472, Florida, USA, Dec. 2001 https://doi.org/10.1109/.2001.980144
  10. D-H Kim, H-S Ryu, J-G Lee, Y-H Moon, 'A Study on Voltage Collapse Mechanism using Equivalent Mechnical Model', KIEE International transactions on Power Engineering, Vol. 12A, No. 1, March 2002
  11. Young-Hyun Moon, 'A New Approach to derive Energy Integral for the Direct Method of Stability Analysis in Multimachine Power Systems', IEEE 36th Midwest Symposium on Circuits and Systems, August 1993 https://doi.org/10.1109/MWSCAS.1993.343123