Optimal Allocation and Droop Setting of Distributed Generation for effective operation of Islanded Microgrid

The effective operation of islanded microgrids in supplying quality power to the consumers having different types of loads including electric vehicle charging stations, by electronically coupled distributed generations and PV based generations with battery storage is a real issue in the operation point of view. The proper allocations and appropriate droop coefficients of distributed generations along with correct charging-discharging scheduling of batteries play a major role in balancing the generation and load powers in order to maintain the system frequency, node voltages, voltage stability within the acceptable limits and also to reduce the system losses. Thus, in this paper, the locations and droop settings of dispatchable distributed generations in islanded microgrid are optimised at peak load level based on minimisation of the system frequency deviation, the deviation of node voltage stability index and the power loss of the system using Honey Badger optimisation algorithm. The droop coefficients of the dispatchable distributed generations at the optimal locations as well as the charging-discharging scheduling of batteries at the PV nodes are also optimised for 96 hours, representing four seasons of a year. The effectiveness of the methodology is tested on a 33-node radial islanded microgrid.