, Volume 18, Issue 5, pp 787–799

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

  • K R Padiyar
  • H S Y Sastry

DOI: 10.1007/BF03024225

Cite this article as:
Padiyar, K.R. & Sastry, H.S.Y. Sadhana (1993) 18: 787. doi:10.1007/BF03024225


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.


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

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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