Open AccessMicrogrid tie‐line power fluctuation mitigation with virtual energy storage
Author(s) -
Sun Yushu,
Tang Xisheng,
Sun Xiaozhe,
Jia Dongqiang,
Zhang Guowei
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8553
Subject(s) - microgrid , energy storage , computer science , overcharge , state of charge , tie line , power (physics) , computer data storage , virtual power plant , smart grid , distributed generation , automotive engineering , battery (electricity) , electric power system , electrical engineering , renewable energy , engineering , control (management) , computer hardware , physics , quantum mechanics , artificial intelligence
There is a large amount of controllable loads in the microgrid. They can be described as virtual energy storage to participate in microgrid tie‐line power fluctuation mitigation. Firstly, in order to meet the grid‐connected requirement, the wavelet packet decomposition algorithm is used to smooth the tie‐line power fluctuation. Furthermore, in order to prevent overcharge and overdischarge of battery or virtual energy storage, the power allocation between two types of energy storage is implemented equally based on the concept of energy. In addition, the fuzzy control strategy is applied to revise virtual energy storage power based on its SOC (i.e. state‐of‐charge), so that virtual energy storage can operate within a reasonable work range. Finally, an example is given to verify the effectiveness of the control strategy.