Sadhana

, Volume 18, Issue 5, pp 787–799 | Cite as

A structure-preserving energy function for stability analysis of AC/DC systems

  • K R Padiyar
  • H S Y Sastry
Article

Abstract

Direct stability analysis ofAC/DC power systems using a structure-preserving energy function (SPEF) is proposed in this paper. The system model considered retains the load buses thereby enabling the representation of nonlinear voltage dependent loads. TheHVDC system is represented with the same degree of detail as is normally done in transient stability simulation. The converter controllers can be represented by simplified or detailed models. Two or multi-terminalDC systems can be considered. The stability analysis is illustrated with a 3-machine system example and encouraging results have been obtained.

Keywords

Direct stability analysis structure-preserving energy function nonlinear voltage dependent loads 

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References

  1. Anderson P M, Fouad A A 1977Power system control and stability (Iowa: State University Press)Google Scholar
  2. Bergen A R, Hill D J 1981 A structure preserving model for power system stability analysis.IEEE Trans. Power Appar. Syst. PAS-100: 25–35CrossRefGoogle Scholar
  3. DeMarco C L, Canizares C A 1992 A vector energy function approach for security analysis ofAC/DC systems.IEEE Trans. Power Syst. PWRS-7: 1000–1011CrossRefGoogle Scholar
  4. Fudeh H, Ong C M 1981 A simple and efficientAC-DC load flow method for multiterminalDC systems.IEEE Trans. Power Appar. Syst. PAS-100: 4389–4396CrossRefGoogle Scholar
  5. Hiskens I A, Hill D J 1989 Energy functions, transient stability and voltage behaviour in power systems with nonlinear loads.IEEE Trans. Power Syst. PWRS-4: 1525–1533CrossRefGoogle Scholar
  6. Lefebvre S, Wang W K, Reeve J, Gagnon J, Johnson B K 1991 Experience with modellingMTDC systems in transient stability programs.IEEE Trans. Power Delivery PWRD-6: 405–413CrossRefGoogle Scholar
  7. Narasimhamurthi N, Musavi M T 1984 A general energy function for transient stability analysis of power systems.IEEE Trans. Circuits. Syst. CAS-31: 637–645CrossRefGoogle Scholar
  8. Ni Y-X, Fouad A A 1987 A simplified two-terminal HVDC model and its use in direct transient stability assessment.IEEE Trans. Power Syst. PWRS-2: 1006–1012CrossRefGoogle Scholar
  9. Padiyar K R 1991HVDC power transmission systems—Technology and system interactions (New Delhi: Wiley Eastern)Google Scholar
  10. Padiyar K R, Ghosh K K 1987 A novel structure preserving energy function for dynamic stability evaluation of power systems with known modes of instability.Elec. Mach. Power Syst. 13: 135–148CrossRefGoogle Scholar
  11. Padiyar K R, Ghosh K K 1989 Direct stability evaluation of power systems with detailed generator models using structure-preserving energy functions.Int. J. Elec. Power Energy Syst. 11: 47–56CrossRefGoogle Scholar
  12. Padiyar K R, Sastry H S Y 1983 Application of topological energy function for the direct stability evaluation of power systems with voltage dependent loads.Proc. Int. Conf. on Systems, Man and Cybernetics (New York:IEEE Press)Google Scholar
  13. Padiyar K R, Sastry H S Y 1984 Direct stability analysis ofAC/DC power systems using a structure preserving energy function.Proc. Int. Conf. Comput. Syst. Signal Process. Bangalore, IndiaGoogle Scholar
  14. Padiyar K R, Sastry H S Y 1987 Topological energy-function analysis of stability of power systems.Int. J. Elec. Power Energy Syst. 9: 9–16CrossRefGoogle Scholar
  15. Pai M A 1989Energy function analysis for power system stability (Boston: Kluwer)Google Scholar
  16. Pai M A, Padiyar K R, Radhakrishna C 1981 Transient stability of multimachineAC/DC power systems via energy function method.IEEE Trans. Power Appar Syst. PAS-100: 5027–5035CrossRefGoogle Scholar
  17. Ribbens-Pavella M, Evans F J 1985 Direct methods for studying dynamics of large-scale electric power systems—A survey.Automatica 21: 1–21MATHCrossRefMathSciNetGoogle Scholar
  18. Tsolas N, Arapostathis A, Varaiya P 1985 A structure-preserving energy function for power system transient stability analysis.IEEE Trans. Circuits Syst. CAS-32: 1041–1049CrossRefMathSciNetGoogle Scholar
  19. Varaiya P P, Chen R L, Wu F F 1985 Direct methods for transient stability analysis of power systems—Recent results.Proc. IEEE 73: 1703–1715CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 1993

Authors and Affiliations

  • K R Padiyar
    • 1
  • H S Y Sastry
    • 2
  1. 1.Department of Electrical EngineeringIndian Institute of ScienceBangaloreIndia
  2. 2.Karnataka Regional Engineering CollegeSrinivasanagarIndia

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