A Study on Effective Enhancement of Load Power Factor Using the Load Power Factor Sensitivity of Generation Cost

  • Lee Byung Ha (Dept. of Electrical Engineering, University of Incheon) ;
  • Kim Jung-Hoon (Dept. of Electrical Engineering, Honik University)
  • 발행 : 2005.09.01

초록

Various problems such as increase of power loss and voltage instability may often occur in the case of low load power factor. The demand of reactive power increases continuously with the growth of active power and restructuring of electric power companies makes the comprehensive management of reactive power a troublesome problem, so that the systematic control of load power factor is required. In this paper, the load power factor sensitivity of generation cost is derived and it is used for effectively determining the locations of reactive power compensation devices and for enhancing the load power factor appropriately. In addition, voltage variation penalty cost is introduced and integrated costs including voltage variation penalty cost are used for determining the value of load power factor from the point of view of economic investment and voltage regulation. It is shown through application to a large-scale power system that the load power factor can be enhanced effectively using the load power factor sensitivity and the integrated cost.

키워드

참고문헌

  1. M.M. Saied, 'Optimal Power Factor Correction', IEEE Trans. Power Systems, Vol. 3, No. 3, pp. 844- 851, Aug 1988 https://doi.org/10.1109/59.14531
  2. P.Nedwick, A.F. Mistr, E.B. Croasdale, 'Reactive management: A key to survival in the 1990s', IEEE Transactions on Power Systems, Vol. 10, No. 2, pp. 1036-1043, May 1995 https://doi.org/10.1109/59.387949
  3. G.R.M. da Costa, 'Optimal reactive dispatch through primal-dual method', IEEE Transactions on Power Systems, Vol. 12, No. 2, pp. 669-674, May 1997 https://doi.org/10.1109/59.589644
  4. J.T. Jang, Y.S. Jeon, 'The optimal condenser position & capacity for power factor compensation in distribution system', Transactions of KIEE, Vol. 48A, pp. 1190-1197, 1999.10
  5. Korea Power Exchange, A study on the voltage operation and determination methods of load power factor for the power transmission system, 2002.12
  6. B.H. Lee, M.H. Oh, J.H. Kim, K.B. Shim, 'A Study on the Effective Enhancement of the Load Power Factor Using the Load Power Factor Sensitivity of Generation Cost and Integrated Costs', Proceedings of the KIEE PES Autumn Annual Conference, pp. 284- 286, 2003.11
  7. Korea Electric Power Research Institute, A study on the appropriate load model for accurate analysis of power system stability, 2001.3
  8. KEPCO, The principles of electric power economics: Investment theory of power system equipments, 1995. 12