Distributed frequency control of microgrid

What is the optimal distributed control strategy for a microgrid?

In Xu et al. (2019), an optimal distributed control strategy is proposed for the coordination of multiple distributed generators in an islanded microgrid, employing a finite-time secondary frequency control approach to eliminate frequency deviation and maintain accurate active power sharing.

What causes frequency deviations in microgrids?

Frequency deviations in microgrids (MGs) often arise due to load fluctuations, posing a challenge for maintaining grid stability. Traditional inverter control does not actively predict future system behavior causing reliability issues.

Is microgrid frequency and voltage control a consensus problem?

With the continuous development of multi-agent systems, distributed cooperative control, grounded in the principles of multi-agent systems, is applied to the secondary control of microgrids. This approach considers microgrid frequency and voltage control as a consensus problem within distributed multi-agent systems [15, 16].

How do der controllers regulate microgrid frequencies?

The proposed controller coordinates DERs to regulate microgrid frequencies through active power control and VFC, while addressing FIDVR events. It incorporates loops for DER power output regulation, considering voltage-dependent load coupling. A power-sharing mechanism ensures coordination between distributed active power and voltage controllers.