Optimal Compensation of Reactive Power in the Restructured Distribution Network

Authors: Atefeh Pourshafie, Mohsen. Saniei, S. S. Mortazavi, A. Saeedian

Abstract:

In this paper optimal capacitor placement problem has been formulated in a restructured distribution network. In this scenario the distribution network operator can consider reactive energy also as a service that can be sold to transmission system. Thus search for optimal location, size and number of capacitor banks with the objective of loss reduction, maximum income from selling reactive energy to transmission system and return on investment for capacitors, has been performed. Results is influenced with economic value of reactive energy, therefore problem has been solved for various amounts of it. The implemented optimization technique is genetic algorithm. For any value of reactive power economic value, when reverse of investment index increase and change from zero or negative values to positive values, the threshold value of selling reactive power has been obtained. This increasing price of economic parameter is reasonable until the network losses is less than loss before compensation.

Keywords: capacitor placement, deregulated electric market, distribution network optimization.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1078468

References:

[1] J.C. Carlisle A.A. El-Keib, "A Review of Capacitor Placement Techniques on Distribution Feeders", IEEE System Theory, Proceedings of the Twenty-Ninth Southeastern Symposium on Volume , pp.:359 - 365, 1997
[2] Augugliaro, L. Dusonchet, M.G. Ippolito, E. Riva Sanseverino,"Multiobjective design of distributed reactive power production in a deregulated electric market" Electrical Power and Energy systems.27.pp.205-214. 2005.
[3] Delfanti, M.; Granelli, G.P.; Marannino, P.; Montagna, M. "Optimal Capacitor Placement Using Deterministic and Genetic Algorithms ": IEEE Transactions on Power systems, Vol. 15, NO. 3, August 2000, Page(s):1041 - 1046
[4] Al-Mohammed , A.H.H.; Elamin, "Capacitor Placement In Distribution Systems Using Artificial Intelligent Techniques": Power Tech Conference Proceedings,2003 IEEE Bologna Volume 4, Issue,June 2003 Page(s): 23-26
[5] Ying-Tung Hsiao, Chia-Hong Chen, Cheng-Chih Chien, "Optimal capacitor placement in distribution systems using a combination fuzzy- GA method "Elsevier Electrical Power and Energy Systems 26(2004)Page(s): 501-508
[6] Santos, J.R.; Exposito, A.G.; Ramos, J.L.M. , "A Reduced-Size Genetic Algorithm for Optimal Capacitor Placement on Distribution Feeders " : Electrotechnical Conference,2004.MELECON 2004.Proceedings of the 12th IEEE Mediterranean, Volume 3, Issue , 12-15 May 2004 Page(s): 963 - 966
[7] N.hakimfar,R.hooshmand,S.S.mortazavie,optimal loacation and size of capacitors with genetic algorithm in distribution networks, Iran 13th Electrical power distribution conference.