Smart Restoration for Improved Reliability of Microgrids with Renewable Energy Sources

This paper presents analysis of smart restoration techniques for improving system reliability through splitting a larger grid into a number of individual micro grids (MGs), which contain both wind and PV energy resources. The term “smart restoration” is used to denote adaptive control and management schemes, in which power system transfers from emergency operating conditions to a restorative state, where MGs are formed based on the available wind and PV energy resources. To preserve supply to all loads, or most of the loads in MGs, wind and PV energy resources are used for a fast transfer to MG operation and for efficient balancing of variable MG demands. The analysis uses Monte Carlo simulations to evaluate reliability indices for a number of considered MG scenarios.