Journal
IEEE TRANSACTIONS ON SMART GRID
Volume 6, Issue 1, Pages 238-248Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSG.2014.2354033
Keywords
Charging/discharging efficiency; cooperative control; distributed energy storage systems (ESSs); microgrid
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Funding
- Sun Yat-sen University-Carnegie Mellon University (SYSU-CMU) Joint Institute of Engineering, SunYat-sen University, Guangzhou, China
- SYSU-CMU Shunde International Joint Research Institute, Guangdong, China
- Directorate For Engineering [1408222] Funding Source: National Science Foundation
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Energy storage systems (ESSs) are often proposed to support the frequency control in microgrid systems. Due to the intermittency of the renewable generation and constantly changing load demand, the charging/discharging of various ESSs in an autonomous microgrid needs to be properly coordinated to ensure the supply-demand balance. Recent research has discovered that the charging/discharging efficiency of ESSs has remarkable dependence on the charging/discharging rate and state-of-charge of the ESS. This paper proposes a distributed cooperative control strategy for coordinating the ESSs to maintain the supply-demand balance and minimize the total power loss associated with charging/discharging inefficiency. The effectiveness of the proposed approach is validated by simulation results.
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