Sharif Digital Repository

Since the power systems usually are being operated close to their nominal capacity due to economical reasons, the probability of wide blackouts in power grids have been increased. However by employing suitable strategies the probability of huge blackouts is still very small but if they occur may put the power system operators in trouble while restoring the system. Thus many studies have been conducted in recent years dealing with power system restoration planning to achieve fast and reliable restoration plans. The scope of this project is overvoltage assessment during system restoration. In this manner we can find the optimal strategy with the least overvoltage problems to prevent the... 

The presence of electric vehicle (EV) parking in distribution or microgrids can become a challenging issue for the power grid. If parking operators charge EVs parked in their parking facilities without coordination with the distribution or microgrid operator, they can impose a heavy burden on the grid, resulting in increased costs and problems in the power network. This study aims to address energy management in EV parking facilities in the distribution network by proposing a two-level model. In this two-level model, the high-level problem is the distribution network, and the low-level problem is the parking facility. At the high-level, the distribution network operator tries to maximize...