Power Sharing in Island Microgrids

Frontiers in Energy Research

Vitor Morais¹  Adriano Carvalho¹  Jorge Pinto² 

[1] Porto, Portugal;null;

关键词: microgrid;    island;    parallel converters;    power sharing;    droop control;    Battery;    bus signaling;   

DOI  :  10.3389/fenrg.2020.609218

来源: Frontiers

【 摘 要 】

The growth of local renewable energy sources and heavy loads in power distribution networks, such as the increasing electric vehicles charging stations, causes several issues with a direct impact on the stability of the electrical grid. An attempt to overcome such issues is the microgrid concept, which has the grid structured into local sub-grids that manage their power and energy balancing. A microgrid may operate connected or disconnected from the main grid, being dynamically necessary to guarantee a power balancing between local loads and sources. Furthermore, as several power units are connected to the same microgrid, equity is also required in terms of power sharing. Current work explores a scenario of an island operation of a microgrid with multiple sources, including battery storage systems and sharing power with multiple loads, including electric vehicle chargers, a scenario appropriated to a city grid. A local control solution for a stable operation of the microgrid in terms of both power balancing and power sharing is presented and validated through numerical and experimental results.

【 授权许可】

CC BY