How to control reactive power in independent microgrid

What are microgrid control objectives?

The microgrid control objectives consist of: (a) independent active and reactive power control, (b) correction of voltage sag and system imbalances, and (c) fulfilling the grid's load dynamics requirements. In assuring proper operation, power systems require proper control strategies.

What is the nature of microgrid?

The nature of microgrid is random and intermittent compared to regular grid. Different microgrid structures with their comparative analyses are illustrated here. Different control schemes, basic control schemes like the centralized, decentralized, and distributed control, and multilevel control schemes like the hierarchal control are discussed.

How can a microgrid be controlled?

Control of microgrid with a considerable number of distributed energy resources, small energy storage units, and electric vehicles require flexible and scalable control strategies.

Why does a microgrid need reactive power support?

In islanded operating condition, the microgrid has to maintain the reactive power balance independently due to the absence of an infinite bus. The firmly coupled generation and utilization along with the presence of non-dispatchable intermittent renewable power sources require reactive power support.

How to manage power flow in grid connected large AC microgrid?

Active and reactive power flow management in grid connected large AC microgrid is incorporated with MAH control and non-convex optimization. Multiagent topological (MAT) control strategies are utilized in various network topologies as per the economic and communication considerations.

What is a microgrid control structure?

Traditional control architecture in the microgrid is of hierarchical nature. As shown in Figure 1, the control structure has three levels. 7 The primary control ensures the droop control for load sharing and active and reactive power transfer (P n, Q n ).