Optimal Sizing of Seawater Pumped Storage Plant with Variable-Speed Units Considering Offshore Wind Power Accommodation

Weiwei Yao, Changhong Deng, Dinglin Li, Man Chen, Peng Peng and Hao Zhang
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Weiwei Yao: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Changhong Deng: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Dinglin Li: Power Generation Company of China Southern Power Grid, Guangzhou 510630, China
Man Chen: Power Generation Company of China Southern Power Grid, Guangzhou 510630, China
Peng Peng: Power Generation Company of China Southern Power Grid, Guangzhou 510630, China
Hao Zhang: Power Generation Company of China Southern Power Grid, Guangzhou 510630, China

Sustainability, 2019, vol. 11, issue 7, 1-18

Abstract: To improve the output characteristics of offshore wind power and to enhance the wind power accommodation, this paper analyzes its output characteristics along the southern coast in China, and then proposes an optimal sizing method of seawater pumped storage plant (SPSP) with variable-speed units in a connected mode on an islanded microgrid. Based on the constraints of variable-speed unit characteristics and power smoothness at the point of common coupling (PCC), the maximum static revenue as the objective function for the optimal sizing of SPSP is established. Notably, under an appropriate smoothness rate at PCC, the constraints that are mentioned above can adequately reflect the advantages of variable-speed units: fast power response and wide operating range. Additionally, they contain more concise models and variables than previously, which are friendly for optimizing the calculations. The results demonstrate that the proposed method is feasible and practical, by simulating and comparing in different scenarios.

Keywords: seawater pumped storage plant; variable-speed unit; offshore wind power; optimal sizing; islanded microgrid (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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