Chapter 6: Overcurrent relay protection for active microgrids

Abstract

Electric grids have been transformed in recent decades into horizontal and decentralized systems due to the interconnection of renewable energy sources (RES). These electricity grids mostly operate interconnected to the public grid under deregulated energy policies, and sometimes operate in isolation when a fault occurs in the system or in a sustained operation. Renewable energies have had a greater impact on the operation of electricity grids, having substantial advantages in the fight against climate change, reducing losses when they are not connected in weak nodes, and increasing the energy matrix of electricity companies. However, there are significant challenges ...

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