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

Sustainability

Hao Zhang¹  Dinglin Li¹  Man Chen¹  Peng Peng¹  Weiwei Yao²  Changhong Deng² 

[1] Power Generation Company of China Southern Power Grid, Guangzhou 510630, China;School of Electrical Engineering, Wuhan University, Wuhan 430072, China;

关键词: seawater pumped storage plant;    variable-speed unit;    offshore wind power;    optimal sizing;    islanded microgrid;   

DOI  :  10.3390/su11071939

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown