KIEE International Transactions on Power Engineering

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

A Fast Contingency Screening Algorithm for On-line Transient Security Assessment Based on Stability Index

  • Nam, Hae-Kon (Department of Electrical Engineering Chonnam National University) ;
  • Kim, Yong-Hak (Power System Analysis Group, Korea Electric Power Research Institute) ;
  • Song, Sung-Geun (Procom) ;
  • Kim, Yong-Gu (Department of Electrical Engineering Chonnam National University)
  • Published : 2002.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper describes a new ultra-fast contingency screening algorithm for on-line TSA without time simulation. All machines are represented in a classical model and the stability index is defined as the ratio between acceleration power during a fault and deceleration power after clearing the fault. Critical clustering of machines is done based on the stability index, and the power-angle curve of the critical machines is drawn assuming that the angles of the critical machines increase uniformly, while those of the non-critical ones remain constant. Finally, the critical clearing time (CCT) is computed using the power-angle curve. The proposed algorithm is tested on the KEPCO system comprised of 900-bus and 230-machines. The CCT values computed with the screening algorithm are in good agreement with those computed using the detailed model and the SIME method. The computation time for screening about 270 contingencies is 17 seconds with 1.2 GHz PC.

Keywords

References

  1. M. Pavella, P. G. Murthy, 'Transient Stability of Power Systems: Theory and Practice'. John Wiley & Sons. 1994
  2. C. Fu, A. Bose, 'Contingency Ranking Based on Se-verity Indices in Dynamic Security Analysis'. IEEE Transaction on Power Systems, Vol. 14, No.3, August 1999, pp. 980-986
  3. A.A. Fouad. V. Vittal. 'The Transient Energy Function Method'. Electrical Power and Energy Systems, Vol. 10, No.4, October 1988, pp.233-246
  4. Y. Xue, T. Van Cutsem, M. Pavella, 'Extended Equal Area Criterion. Justifications, Generalizations, Appli-cations', IEEE Transactions on Power Systems, Vol.A, No.1, pp.44-52, February 1989
  5. V. Chadalavada, V. Vittal, G.. C. Ejebe, G. Irisarri, J. Tong, G.. Pieper, M. McMullen, 'An On-Line Contin-gency Filtering Scheme for Dynamic Security As-sessment'. IEEE Transactions on Power Systems, Vol-ume 12, No.1, February 1997, pp. 153-162
  6. Y. Mansour, E. Vaahedi, A.Y. Chang, B.R. Coms, B. Garrett. K. Demaree, T. Athay, K. Cheung, 'B.C Hy-dro's On-line Transient Stability Assessment (TSA) Model Development, Analysis and Post Processing', IEEE Transactions on Power Systems, Volume 10, No. 1, February 1995, pp. 241-253
  7. Y. Zhang, L. Wehnkel, P. Rousseaux, M. Pavella, 'SIME: A Hybrid Approach to Fast Transient Stability Assessment and Contingency Selection', Electric Power & Energy Systems, Vol.19, No.3, 1997. pp.195-208 https://doi.org/10.1016/S0142-0615(96)00047-6
  8. Y. Zhang, L. Wehnkel, M. Pavella, 'SIME: A Com-prehensive Approach to Fast Transient Stability As-sessment', Trans. of IEE Japan. Vol.118-B, No.2, 1998, pp.127-132
  9. D. Ernst, D. Ruitz- Vega, M. Pavella, P. Hirsch, D. So-bajic 0, 'A Unified Approach to Transient Stability Contingency Filtering. Ranking and Assessment', IEEE Transactions on Power Systems, Vol. 16, No.3. pp.435-433, August 2001 https://doi.org/10.1109/59.932279
  10. J. Lee, B. Lee, S.-H. Kwon, H.-K. Narn, J.B. Choo, K. Yi, Fast Contingency Screening for On-line Transient Stability Monitoring of the KEPCO System, IEEE Power Engineering Society 2001 Summer Meeting, 2001. 7.15-19, Vancouver, Canada.