American Journal of Applied Sciences

A Novel Method for Optimal Location and Expansion of Subtransmission Substations Considering Existing Medium-Voltage Distribution Feeders

M. Farrokhifar, M. Bana Sharifian and R. Esmaeilzadeh

DOI : 10.3844/ajassp.2009.368.379

American Journal of Applied Sciences

Volume 6, Issue 3

Pages 368-379

Abstract

This research presents an accurate comprehensive cost function for the problem of optimal location of subtransmission substations. Technical constraints and economical parameters are investigated in the modeling. Genetic algorithm is used to optimize the cost function. Coding of decision variables is done in a way that finding the correct solutions is achieved faster. For the first time in this study, free capacity of medium voltage distribution feeders is used for optimal location of subtransmission substations. Also cost of coupling to upward grid in candidate substations with considering different levels of subtransmission voltage is presented. Efficiency of the proposed algorithm is evaluated via several case studies.

Copyright

© 2009 M. Farrokhifar, M. Bana Sharifian and R. Esmaeilzadeh. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.