Comparison of optimal DG allocation based on sensitivity based and optimization based approach

Distributed generation integration in the distribution system is a challenging issue in context of optimal placement of DG and improvements in the system operation in terms of losses reduction and voltage profile improvement. In this paper, The main objective of the paper is: (i) finding out the optimal DG location and size using various techniques at unity and 0.9 pf lag, (ii) calculation of total energy losses and cost of active and reactive power supplied by the DG and (iii) comparison of sensitivity and optimization based techniques. The analysis has been carried out for an IEEE 33 radial bus test system.