What is decentralized microgrid control?

Specifically, decentralized microgrid control refers to that the operation and adjustment of DERs can be realized via local information only, and the distributed control allows limited communication between neighboring DERs, as shown in the middle and right subfigures of Fig. 1.

Are centralized controls a problem in a microgrid?

Indeed, relying on fully-connected communication and system-wide optimization, the centralized controls are time-consuming and may not be capable of coordinating DERs promptly against disturbances. To avoid compromising system stability, the microgrid with slow coordination commands needs excessive reserves to react to disturbances.

Can centralized hierarchical control be applied to a microgrid?

Nevertheless, simply applying the centralized hierarchical control strategies, traditionally used for utility electricity grids, onto the islanded microgrids would encounter several critical issues.

What is distributed control in microgrid?

Distributed control in microgrid allows the self-decision making of a DER based on the local measurements and limited communication with other DERs.

What is droop control in a microgrid?

In the field of decentralized primary control, droop control is the most common application deployed in the voltage source inverters of the microgrid (Pogaku et al., 2007). When the active loads suddenly increase in the microgrid, the local voltage sources can immediately increase their outputs to maintain the active power balance.

Why do we need a microgrid system?

Abstract: Microgrid systems provide benefits to strong, weak and remote power grids. Using multiple sources with differing characteristics and native constraints makes it a challenge to control the microgrid.