DC microgrid load switching experiment

How effective is distributed control of dc microgrid?

Simulation and experiment results illustrate the effectiveness of the proposed strategy. The distributed control of DC microgrid is becoming increasingly important in modern power systems. One important control objective is to ensure DC bus voltage stability and proper current sharing with a reduced communication burden.

Are DC microgrids planning operation and control?

A detailed review of the planning, operation, and control of DC microgrids is missing in the existing literature. Thus, this article documents developments in the planning, operation, and control of DC microgrids covered in research in the past 15 years. DC microgrid planning, operation, and control challenges and opportunities are discussed.

How to ensure the safe operation of DC microgrids?

In order to ensure the secure and safe operation of DC microgrids, different control techniques, such as centralized, decentralized, distributed, multilevel, and hierarchical control, are presented. The optimal planning of DC microgrids has an impact on operation and control algorithms; thus, coordination among them is required.

How does a dc microgrid work?

Within the DC microgrid, the renewable energy distributed generation (DG) generally operates in the maximum power point tracking (MPPT) state. Distributed energy storages (DESs) supply power when the DGs are insufficient to guarantee load power supply. When the DGs are sufficient, the power is stored by DESs to maximize economic benefits.

How does distributed energy storage affect the stability of DC microgrids?

As a supplement to large power grids, DC microgrids with new energy access are increasingly widely used. However, with the increasing proportion of new energy in DC microgrids, its output fluctuations directly affect the overall stability of the microgrids. Distributed energy storage can smooth the output fluctuation of distributed new energy.

How to improve dc microgrid's robustness facing complex work environments?

To improve DC microgrid’s robustness facing complex work environments, this paper proposes a current consensus algorithm based adaptive droop control strategy for hierarchical controlled DC microgrids. This strategy consists of primary control and secondary control.