Communication-assisted protections for DC microgrids and their performance analysis during cyberattacks

In recent years, fossil fuel-based electric power sources are a major concern due to environmental issue. Depletion of such energy sources is also a matter of worry. The power delivery networks in a power system have been stressed due to aging of transmission and distribution infrastructure and the growing demand of electricity. Integration of renewable energy sources (RESs) to the power grid using advanced power electronic converters is a promising solution for enhanced reliability of supply, clean energy and improved power quality [1]. High penetration of RESs in a grid causes voltage rise and protection issues threatening grid security and reliability. The concepts of 'Microgrid' and 'Smart grid' are emerging in power system as viable solution to these problems.