Control of Hybrid Energy Storage System for Providing Grid Support Services

This paper presents an analysis of the model and control of a hybrid energy storage system (ESS) based on supercapacitor and battery for supporting the power grid. The power conversion system consists of a bidirectional dc-dc converter as an additional stage for regulating the dc-link voltage of the...

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Bibliographic Details
Main Authors: Neto, Pedro A. N., Soares, Beatriz Maria W., da Silva, Joao Goncalves A., Gehrke, Camila S., da Silva, Italo Roger F. M. P.
Format: Conference Proceeding
Language:English
Subjects:
Batteries
battery
control
grid support
Hybrid power systems
Power control
Power electronics
Power grids
pq theory
Regulation
storage system
supercapacitor
Supercapacitors
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Summary:This paper presents an analysis of the model and control of a hybrid energy storage system (ESS) based on supercapacitor and battery for supporting the power grid. The power conversion system consists of a bidirectional dc-dc converter as an additional stage for regulating the dc-link voltage of the dc-ac converter, which is connected to a three-wire three-phase system. The grid power control is implemented based on the instantaneous pq theory, in order to achieve low-frequency demand from the power control of the batteries. Thus, the power peaks are automatically provided by the supercapacitors. From this solution, a smaller battery size, a longer battery life and a higher overall system efficiency can be achieved compared to a conventional battery ESS. To verify the effectiveness of the proposed system, simulation results are presented, and a comparison between the conventional battery ESS and the proposed solution is also presented.
ISSN:2643-9778
DOI:10.1109/COBEP53665.2021.9684148