TY - JOUR
T1 - Unlocking potential contribution of seasonal pumped storage to ensure the flexibility of power systems with high proportion of renewable energy sources
AU - Li, Peiquan
AU - Zhao, Ziwen
AU - Li, Jianling
AU - Liu, Zhengguang
AU - Liu, Yong
AU - Mahmud, Md Apel
AU - Sun, Yong
AU - Chen, Diyi
N1 - Funding information: This research is supported by the Fundamental Research Funds for the Northwest A&F University (No./Z1090220172), the scientific research foundation of the Natural Science Foundation of Shaanxi Province of China (2019JLP-24), Shaanxi Science and Technology Innovation Team (2018slkj-9).
PY - 2023/12/1
Y1 - 2023/12/1
N2 - Seasonal pumped storage (SPS) is a sustainable and effective energy storage solution that can mitigate the seasonal fluctuations of renewable energy sources and provide flexibility to power systems. Despite its huge potentials, the operational mechanism of SPS, particularly for the multi-energy complementary operation, remains poorly understood. In this paper, we propose an optimal scheduling model of a regional power system with SPS and evaluate its potential contribution to energy efficiency, power system stability, and environmental impact. A case study in Qinghai, China, demonstrated that SPS effectively managed seasonal fluctuations of renewable energy sources, improved hydropower generation during the dry season, and stored excess power from renewable energy sources and the main power grid. Furthermore, our analysis revealed that SPS significantly improved energy efficiency compared to traditional pumped storage by increasing system energy efficiency by 11.21%, reducing wind and solar power by 72.97%, and lowering carbon emissions by 94.41%. Overall, SPS has immense potential in providing power system flexibility and enhancing the decarbonization of power systems.
AB - Seasonal pumped storage (SPS) is a sustainable and effective energy storage solution that can mitigate the seasonal fluctuations of renewable energy sources and provide flexibility to power systems. Despite its huge potentials, the operational mechanism of SPS, particularly for the multi-energy complementary operation, remains poorly understood. In this paper, we propose an optimal scheduling model of a regional power system with SPS and evaluate its potential contribution to energy efficiency, power system stability, and environmental impact. A case study in Qinghai, China, demonstrated that SPS effectively managed seasonal fluctuations of renewable energy sources, improved hydropower generation during the dry season, and stored excess power from renewable energy sources and the main power grid. Furthermore, our analysis revealed that SPS significantly improved energy efficiency compared to traditional pumped storage by increasing system energy efficiency by 11.21%, reducing wind and solar power by 72.97%, and lowering carbon emissions by 94.41%. Overall, SPS has immense potential in providing power system flexibility and enhancing the decarbonization of power systems.
KW - Decarbonization
KW - Energy curtailment
KW - Flexibility enhancement
KW - Regional power system
KW - Seasonal pumped storage
UR - http://www.scopus.com/inward/record.url?scp=85171378761&partnerID=8YFLogxK
U2 - 10.1016/j.renene.2023.119280
DO - 10.1016/j.renene.2023.119280
M3 - Article
SN - 0960-1481
VL - 218
JO - Renewable Energy
JF - Renewable Energy
M1 - 119280
ER -