EnergyManagement System withStability Constraints forStand-alone Autonomous Microgrid

This paper presents anEnergy ManagementFodrp-ntledmcgis,wchferavtgs Syste (EM) fo a stnd-aone roop-ontrlledFordroop-controlled microgrids, whichoffer advantages System(EMS)fora stand-alone droop-controlled intem'fatnmu rainaa i a hw microgrid, whichadjusts generator outputs tominimizethat fuelconsumptionandalsoensuresstableopn. It thattheparameters thatdetermine generator power fuelconsumption andalsoensures stable operation. It shrn havasinfcn feto tbltnsad haspreviously beenshownthatdroop gains havea saighv infcn feto tblt nsad has previouslybeenshownthatdalone operation (4). Adeeper understanding ofthis effect significant effect on stability insuchmicrogrids. isrequired, to allowan EMS to applyreal-time Approximate relationships between these parameters and optimization. Thispaperpresents theapplication of stability margins are therefore identified, usingsmall-signal stability analysis, previously developed in qualitative analysis andsmall-signal techniques. This (4), toanEMS fora laboratory-size droop-controlled allows them tobeselected toensurestability. Optimized microgrid. Experimental results havebeencollected to generator outputs arethenimplemented inreal-time by validate theproposed control strategy. theEMS,through adjustments todroopcharacteristics within thisconstraint. Experimental results froma laboratory-sized microgrid confirm theEMSfunction.2 Microgrid structure