Utilizing PV-Battery Systems and Shiftable Loads for Minimizing Grid Losses and Prosumer Cost: A Comparative Assessment

This paper presents two optimization Schemes (OS) formulated under respective objective functions aiming to exploit the Photovoltaic and Battery Energy Storage Systems (BESS) in installations with Demand Side Management. The first one is locally applied within the prosumer installation to minimize electricity cost, while the second one is centrally applied by the Distribution System Operator or an aggregator, to minimize the power losses of the Distribution Network (DN). To achieve those goals, the OS schedule the charging and discharging time slots for the BESS and manage the time allocation of flexible appliances. Both OSs are examined on a DN with prosumers, using measured consumption patterns of actual residential appliances. The optimization schemes use a Particle Swarm optimization variant. The results highlight the conflict of interests between the different objectives.