An Optimal Methodology for Mitigating the Impacts of EVs and Solar Systems on the Grid by Utilizing Existing Residential Battery Storage Capacity With No Further Grid Upgrades

High penetration of distributed energy resources creates power quality problems such as voltage deviations and power loss on the distribution network. This paper proposes a methodology to improve voltage deviations and decrease power losses caused by solar systems and EV chargers by allocating Permitted Percentage (PP) of battery-based solar systems of residences with already available storage capacity. This methodology enables the utilities to deploy PP for sending charging/discharging commands to improve the grid's power quality. The simulation results of the proposed model were tested in the IEEE 33-bus distribution network. Particle swarm optimization was used to find the optimum charging/discharging commands from the utility for the storages. The effectiveness of the proposed model was shown by determining the capacity of a different combination of PP, and ratios between non-battery- based and battery-based solar residences in the improvement of voltage deviation and power loss of the distribution network.