Abstract
This paper presents analysis of distribution networks considering distributed generations (DGs) and shunt capacitors. Best locations for placement of DGs and shunt capacitors are obtained by using sensitivity analysis. Multiple objectives such as real power loss reduction, satisfying minimum and maximum voltage limit, branch current constraint limit and improvement of voltage stability are considered. Each of these objectives is translated in fuzzy domain by a membership function and integrated them together to form unique objective function. This objective function is then maximized by genetic algorithm (GA) for obtaining optimal active power injection by unity power factor DGs and reactive power injection by shunt capacitors. Analysis is also carried out considering DGs operating at lagging power factor only. Advantage of the proposed technique is presented considering fifty one node distribution network with encouraging results.
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