Optimal Location and Size of Fixed Capacitors on Single Radial Feeder.(Dept.E)

Abstract

This paper presents an optimal method for locating and sizing of fixed shunt capacitor banks in case of static load on single radial distribution feeder. Mathematical models to represent cost saving due to power and energy loss reduction are presented considering growth in load, growth in load factor and increase in cost of energy. The cost saving due to release in system capacity, capacitor cost, voltage drop and voltage pipe constraints as a function of capacitive current flows in feeder segments have been formulated. The cost functions have been performed for optimizing the choice of fixed shunt capacitors. This proposed method has a special advantage that the optimal location of capacitors is limited by the lean period voltage rise constraint and thus avoiding over-voltage Problems during the off-peak hours. The effect of unit-capacitor value on optima i solution is introduced.