Integrating RESs in Power Distribution Systems Considering Multi-MGs and Load Increment

Abstract

Integration of renewable energy sources (RESs) in power distribution systems can reduce power distribution system operational costs, system losses, and environmental emissions. This research investigates optimal integration of PVs and wind turbines in power distribution systems in two separate cases: 1) without having any micro-grid (MG) and 2) having multi-MG in the system. For this purpose, distribution system's performance in terms of system operational costs, system losses, and environmental emissions is analyzed. The well-known PG&E 69 bus distribution system has been chosen for the simulation and case studies and PVs and wind turbines are integrated separately and collectively. The simulation results show that an efficient integration of PVs and wind turbines largely helps to improve the distribution system operational performances. Moreover, the research shows that although considering multi-MG in the distribution system is beneficial for increasing the systems reliability and resiliency, it could have adverse impacts on system's operational performances, e.g. power losses. Further analysis has been done to observe the load increase impacts on distribution systems operational performances.