Optimized Control for Integrated Photovoltaic and Water Distribution System Applications

Optimal control of integrated photovoltaic and water distribution systems is essential for maximizing community benefits. This study investigates the optimization of such controls in a real-world installation in Makassar, Indonesia, where achieving optimal performance is critical given the absence of grid export capabilities for residential users. Building on previously developed Modelica models of the existing system, an integrated hierarchical control strategy is designed to coordinate the operations of the battery, pump, and inverter. Daily simulations illustrate the interactions between the supervisory and local controllers. Annual simulations show that the proposed control consumes 14% less energy than the existing methodologies. When evaluated under dynamic utility pricing structures, the control strategy further reduces energy usage by an additional 6% and can save up to 25% in utility costs. The results highlight the advantages of implementing robust hierarchical controls in integrated systems and their potential to be optimized and calibrated for greater community support.