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Open AccessArticle

Optimal Scheduling of Island Microgrid with Seawater-Pumped Storage Station and Renewable Energy

Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China
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Author to whom correspondence should be addressed.
These authors have equal contribution to this study and are co-first authors of this paper.
Processes 2020, 8(6), 737; https://doi.org/10.3390/pr8060737
Received: 7 May 2020 / Revised: 17 June 2020 / Accepted: 22 June 2020 / Published: 24 June 2020
(This article belongs to the Special Issue Energy Storage System: Integration, Power Quality, and Operation)
The rapid development of renewable energy, represented by wind and photovoltaic, provides a new solution for island power supplies. However, due to the intermittent and random nature of renewable energy, a microgrid needs energy-storage components to stabilize its power supply when coupled with them. The emergence of seawater-pumped storage stations provides a new method to offset the shortage of island power supply. In this study, an optimal scheduling of island microgrid is proposed, which uses seawater-pumped storage station as the energy storage equipment to cooperate with wind, photovoltaic and diesel generator. First, a mathematic formulation of seawater-pumped storage station with renewable energy is presented. Then, to reach the goal of economic dispatch, an optimal scheduling model of island microgrid is established with the consideration of both respective operation constraints and island load requirements. Finally, the effectiveness of the proposed model is verified by an island microgrid over two typical seasons. The simulation results show that the proposed framework not only increases the usage of renewable energy, but also improves the operational reliability and economy of island microgrids. View Full-Text
Keywords: optimal scheduling; island microgrid; seawater-pumped storage station; renewable energy resources optimal scheduling; island microgrid; seawater-pumped storage station; renewable energy resources
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MDPI and ACS Style

Liang, N.; Li, P.; Liu, Z.; Song, Q.; Luo, L. Optimal Scheduling of Island Microgrid with Seawater-Pumped Storage Station and Renewable Energy. Processes 2020, 8, 737.

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