A Study on the Optimal Power Flow with Suppressing the Short Circuit Capacity in Power Systems

전력계통의 고장용량 억제를 위한 최적조류계산 연구

  • 이광호 (단국대 공대 전기공학과)
  • Published : 2000.12.01

Abstract

Switching of the transmission lines(T/L) is one of the ways for suppressing the short circuit capacity. This paper presents the extended optimal power flow(OPF) to the problem of selecting the T/Ls to be open. The constraints of the short circuit currents within limits are added to the inequalities of OPF. Also, the overload on the other lines due to switching of T/Ls is avoided by the linearized inequalities. The number of the open lines can be minimized by incorporating into the objective function of OPF in order to maintain reliability. The method of an effective calculation of the extended OPF is also proposed in this paper, which makes the two parts decoupled. The one concerning the generation dispatch is solved in the first place by the conventional method. Secondly, the other concerning the line-switching is optimized by the proposed formulation.

Keywords

References

  1. 계통특성 개선설비 설치 타당성 검토 보고서, 한국전력, 1995
  2. 154kv 전력계통 방사상 운용방안 수립에 관한 연구, 한국전력, 1997
  3. 이광호, '송전손실과 고장용량 억제를 위한 개방선로 선택 알고리즘 개발,' 한국에너지 공학회, 제8권, 제3호, pp.401-406, 1999. 8
  4. 김호웅, 박만근, 김발호, 'Alternating Direction Method를 이용한 최적조류계산의 분산처리,' 전기학회논문지, Vol.48A, No. 11, pp.1424-1428, 1999. 11
  5. A.J.Wood, B.F.Wollenberg, Power Generation, Operation, And Control, John Wiley & Sons, 1996
  6. J.J.Grainger, W.D.Stevenson, Power System Analysis, McGraw-Hill, 1994
  7. K.H. Lee and Y.M. Park, 'Application of Expert System to Power System Restoration in Sub-control Center,' IEEE Trans. on Power Systems, Vol.12, No.2, pp.629-635, May, 1997 https://doi.org/10.1109/59.589628
  8. Pai M.A., Computer Techniques in Power System Analysis, McGraw-Hill, 1979
  9. K.C.Almeida, F.D.Galiana, 'A General Parametric Optimal Power Flow,' IEEE Trans. on Power Systems, Vol.12, No.1, February 1999 https://doi.org/10.1109/59.317568