Minimum Cost Operation Mode and Minimum Loss Operation Mode of Power System – Operation Mode Selection Based on Voltage Stability

  • Sang-Joong Lee
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4253)


Two formulae – an optimal P-Q generation formula for minimum system cost and an optimal MW allocation formula for minimum system loss – are described in this paper. The author defines two kinds of power system operation mode – minimum cost operation mode and minimum loss operation mode. The system can be operated on either minimum cost operation mode or minimum loss operation mode.

The system is normally being operated on minimum cost operation mode. The system can be shifted to minimum loss operation mode when voltage instability of the system is concerned. The operation mode can be selected by assessment of the system voltage stability, which may be achieved through application of the artificial intelligence techniques.


Power System Operation Mode Voltage Stability Artificial Intelligence Technique System Loss 
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  1. 1.
    Grainger, J.J., Stevenson Jr., W.D.: Power System Analysis, pp. 548–560. McGraw-Hill, New York (1994)Google Scholar
  2. 2.
    Lee, S.J., Kim, K.: Re-construction of Jacobian Matrix by Angle Reference Transposition and Application to New Penalty Factor Calculation. IEEE Power Engineering Review 22(2), 47–50 (2002)CrossRefGoogle Scholar
  3. 3.
    Lee, S.J., Yang, S.D.: Derivation of P-Q Loss Sensitivities by Angle Reference Transposition and An Application to Optimal P-Q Generation for Minimum Cost. IEEE Trans. on Power Sys. 21(1), 428–430 (2006)CrossRefMathSciNetGoogle Scholar
  4. 4.
    Kim, J.H., et al.: Power System Engineering, Chungmoon-gak, Seoul, pp.137–140, 332–333 (1998)Google Scholar
  5. 5.
    Lee, S.J.: Calculation of Optimal Generation for System Loss Minimization Using Loss Sensitivities Derived by Angle Reference Transposition. IEEE Trans. on Power Sys. 18(3), 1216–1217 (2003)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Sang-Joong Lee
    • 1
  1. 1.Dept of Electrical EngineeringSeoul National University of Technology, NowonSeoulKorea

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