Optimal allocation of dispersed generation unit in a network system

The demand of electricity is soaring rapidly. Distributed generation (DG) is one of the most suitable alternatives to fulfill this swelling demand of energy. DG is a small scale generation which is directly installed in the distribution network or at load centre. Optimal allocation of DG is a vital factor in improving the voltage profile of the system and in reduction of total power losses. DG size ranges from a few kilowatts (kW) to 10 Megawatts (MW). This paper suggests a load flow based methodology to deduce the optimal location of DG in three different IEEE bus systems in MATLAB software. A load flow study based on Newton Raphson method is executed on modified IEEE 5 bus, IEEE 14 bus and IEEE 30 bus systems. A single DG source of 2 MW delivering only real power is used in this paper. With the integration of this DG unit at an optimum location, there is a considerable reduction in active power losses and reactive power losses of the system and also the voltage profile is improved significantly.