Stability Constrained Optimal Allocation of DGs in Autonomous Micro-grids

Optimal location and sizing of the DGs including stability constraints is being attempted in this paper. In case of an autonomous micro-grid, it becomes inevitable to ensure the stability of the system. Hence critical clearing angle of the generators is included as a stability constraint in the formulation of the objective function for the optimal location and size of the DGs in the micro-grid. The proposed methodology enhances the stability of autonomous micro-grids on post contingency conditions. Case study analysis is performed upon the standard 33 bus radial distribution system to validate the proposed technique and the resilience needed during contingencies are analyzed.