OPTIMAL ALLOCATION AND SIZING OF CAPACITORS IN DISTRIBUTION SYSTEM CONSIDERING STOCHASTIC LOADS

Abstract

In this research, a model selecting optimal allocation and sizing of capacitors in medium voltage distribution system is proposed which considers the stochastic loads and the standard capacities being discrete values of capacitors. The model includes objective function that is electrical energy loss minimizing during calculation period and constrains to guarantee operation of distribution system as bus power balance contrains, bus voltage limit, and capacity limit of feeders.The calculation is programmed by GAMS programming language and tested on large scale medium voltage distribution system. The calculation rerults by proposed model are compared with methods which utilize fix loads to evaluate effect of proposed method.