Affiliation:
1. Anhui Technical College of Mechanical and Electrical Engineering College of Electrical Engineering, , No.16, West Wenjin Road, Wuhu, Anhui 241000, China
Abstract
Abstract
Microgrids containing renewable energy, energy storage systems and loads have been widely used because of their advantages of environmental friendliness. The role of the energy storage system is to balance the power fluctuation of renewable energy and load and maintain the stability of the power of the microgrid. At present, a large number of studies point out that the use of lithium-ion batteries and supercapacitors (SCs) composed of hybrid energy storage system has better performance. In this paper, we use high-capacity lithium-ion batteries instead of SCs to smooth the microgrid power fluctuations: when the microgrid power fluctuations are small, low-capacity lithium-ion batteries will be alone to smooth the power fluctuations; when the microgrid power fluctuations are medium, low-capacity and high-capacity batteries will be decomposed by wavelet packets to suppress power fluctuations; and when the microgrid power fluctuations are large, high-capacity batteries will smooth out power fluctuations on their own. The contribution of this paper is that we use high-capacity lithium-ion batteries instead of SCs because SCs are very expensive and their features are very small. The effect of the strategy proposed in this paper is verified by simulation. The battery can quickly stabilize the sudden increase in bus fluctuations; if the actual situation is considered, the time will be shorter.
Funder
Anhui Province Teaching Research Project
2021 Quality Improvement Action Plan Project
Key Project of 2019 University Excellent Young Talents Support Plan
Key Project of Anhui University Natural Science Research Project in 2020
Publisher
Oxford University Press (OUP)
Subject
General Environmental Science,Architecture,Civil and Structural Engineering
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