Ricerc@Sapienza

Power stability based on energy storage systems to share the load between distributed generations (DG) in island mode is the main issue in the microgrids (MGs). Stability is an important component in energy management and planning of MG. At the first part of this article, definitions and stability issues classification are presented. In this article, power control based on active power method is analyzed. MG system control due to stability improvement in islanding mode (autonomous mode) after fault occurrence at the upstream network are been studying.

In the modern scenario of smart-grids, the concept of virtual power plant (VPP) is undoubtedly a cornerstone for the smooth integration of renewable energy sources into existing energy systems with a high penetration level. A VPP is the aggregation of decentralized medium-scale power sources, including photovoltaic and wind power plants, combined heat and power units, as well as demand-responsive loads and storage systems, with a twofold objective.