Contingency Ranking for Determining Total Transfer Capability from Voltage Stability Point of View

전체송전용량 결정을 위한 전압안정도 측면에서의 상정사고 순위 매김

  • Published : 2008.02.29


The power transfer capability has been recently highlighted as a key issue in many utilities. The total transfer capability in the KEPCO power system is determined mainly by the voltage stability limit and an enormous number of contingencies should be analyzed to determine the total transfer capability. In this paper, a new ranking index for determining the total transfer capability from voltage stability point of view is presented. This index is applied to the practical system of KEPCO and the effects of ranking the contingencies are analyzed by use of PSS/E package and a developed IPLAN program.


  1. P.W. Sauer, K.D. Demaree and M.A. Pai, 'Stability limited load supply and interchange capability', IEEE Transactions on PAS, Vol. PAS-102, No. 11, pp. 3637-3643, Nov., 1983
  2. James D. McCally, John F. Dorsey, Zhihua Qu, 'A new methodology for determining transmission capacity margin in electric power systems', IEEE Transactions on Power Systems, Vol. 6, No. 3, pp. 944-951, Aug., 1991
  3. Z. Jia and B. Jeyasurya, 'Contingency ranking for on-line voltage stability assessment', IEEE Trans. Power Systems, Vol. 15, No.3, pp.1093-1097, 2000
  4. R. H. Chen, J. Gao, O. P. Malik, G. S. Hope, Shi-ying Wang, Nian-de Xiang, 'Multi-Contingency Preprocessing For Security Assessment Using Physical Concepts and CQR with Classifications', IEEE Transactions on Power Systems, Vol. 8, No. 3, pp. 840-848, Aug., 1993
  5. Brian L. Silverstein and Dennis M. Porter, 'Contingency Ranking for Bulk System Reliability Criteria', Transactions on Power Systems, Vol. 7, No. 3, pp. 956-964, Aug., 1992
  6. Hiroyuki Mori, Hideya Tanaka and Junya Kanno, 'A Preconditioned Fast Decoupled Power Flow Method for Contingency Screening', IEEE Transactions on Power Systems, Vol. 11, No. 1, pp. 357-363, Feb., 1996
  7. L. Wehenkel, 'Contingency severity assessment for voltage security using non-parametric regression techniques', IEEE Transactions on Power Systems, Vol. 11, No. 1, pp. 101-111, Feb., 1996
  8. Nima Amjady, Masoud Esmaili, 'Application of a new sensitivity analysis framework for voltage contingency ranking', IEEE Transactions on Power Systems, Vol. 20, No. 2, pp. 973-983, May 2005