The effect of Distributed Generation modeling and static load representation on the optimal integrated sizing and network losses

In this paper the impact of both the distributed generation (DG) modeling and the static load response to voltage upon the optimal DG size, the radial distribution real power losses, and on the resulting voltage profiles are investigated. The optimal DG sizing nonlinear programming problem is tackled by the sequential quadratic programming deterministic technique. The DG modeling and the different static load representations were tested on 30-bus radial distribution system. Simulation results indicate that the DG size and network losses as well as voltage profiles are highly dependent on the DG and load representations.