Abstract
Hybrid Systems in microgrid applications have gained relevance in power flow management in the context of the worldwide power grids transformation. Successfully integrating several technologies of micro resources and storage systems is a key component of microgrid applications. To address this issue, dc-bus signaling (DBS) is proposed here and used as a distributed decentralized control strategy in which the control nodes, as the generation sources/storage interface converters, induce DC bus voltage-level changes to communicate with the other control nodes. The DC bus voltage thresholds are identified and assigned to each converter to trigger the point at which it begins discharging or charging for six different DC Nano Grid (DCNG) configurations, thereby integrating both conventional and unconventional storage systems. Several test cases have been analyzed to verify the effectiveness of the proposed control logic.
Highlights
To trigger the dc-bus signaling (DBS) control, we simulated a DC Busbar voltage variation afterwards using the variation of the Load in the DC Nano Grid (DCNG)
One possible tool which is capable of contributing to these results is represented by hybrid systems and by the nanoGrids
The authors proposed a DC Bus Signaling (DBS) control strategy as a distributed and decentralized control approach to coordinate and manage several storage system technologies integrated in a DCNG
Summary
Through widespread and technological improvement of the DGs-Res (Distributed Generation based on Renewable Energy Resources) e.g., PV and Wind, locally generated electricity is able to cope with local electrical demand at the same point/time. Wind and solar power are characterized by rapid and less predictable fluctuations over time scales from minutes to hours [1,2]. An extensive literature review, the list of references has been updated and an extensive comparison comparison with works focusing on DBS Strategy has been considered as well.
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