What are future microgrids?

Future microgrids could exist as energy-balanced cells within existing power distribution grids or stand-alone power networks within small communities. A definitive presentation on all aspects of microgrids, this text examines the operation of microgrids – their control concepts and advanced architectures including multimicrogrids.

What are the different types of microgrid architectures?

There are various microgrid architectures: single-bus microgrid, multibus microgrid, multiterminal microgrid, ring-bus microgrid, ladder-bus microgrid, and zonal microgrid. The single-bus microgrid structure has a single bus. Energy sources, loads, and energy storage devices are connected to this bus directly or via power electronic circuits.

What is an AC microgrid?

Since the AC microgrids are designed based on AC power systems, the same control and protection infrastructure used in conventional AC power systems can be directly used in AC microgrids. Generators that originally produced AC energy, such as wind turbines or gas turbines, can easily be included in the system.

What are the features of a microgrid?

One of the important features of the microgrid is optimizing the exchanged power through central control. In this way, the local production is maximized depending on market prices and security restrictions.

Are hybrid AC/DC microgrids a good choice?

Hybrid AC/DC microgrids shown to have more advantages in terms of economy and efficiency compared with the other microgrid architectures. This review shows that hierarchical control schemes, such as primary, secondary, and tertiary control are very popular among all three microgrid types.

What are the technical challenges associated with microgrids?

Nevertheless, the technical challenges associated with the design, operation and control of Microgrids are immense. Equally important is the economic justification of Microgrids considering current electricity market environments and the quantified assessment of their benefits from the view of the various stakeholders involved.