A Two-Step Site Selection Concept for Underground Pumped Hydroelectric Energy Storage and Potential Estimation of Coal Mines in Henan Province
Author:
Chen Qianjun123, Hou Zhengmeng12ORCID, Wu Xuning2ORCID, Zhang Shengyou34, Sun Wei34ORCID, Fang Yanli25ORCID, Wu Lin2ORCID, Huang Liangchao12ORCID, Zhang Tian23
Affiliation:
1. Sino-German Research Institute of Carbon Neutralization and Green Development, Zhengzhou University, Zhengzhou 450001, China 2. Institute of Subsurface Energy Systems, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany 3. Yunnan Key Laboratory of Sino-German Blue Mining and Utilization of Special Underground Space, Kunming 650093, China 4. Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China 5. Sino-German Energy Research Center, Sichuan University, Chengdu 610065, China
Abstract
In the context of carbon neutrality, the phase-out of coal from the energy structure has resulted in numerous old coal mines that possess abundant underground space resources suitable for underground pumped hydroelectric energy storage (UPHES). Site selection and estimation of potential are critical to the planning and implementation of UPHES in old coal mines. This paper introduces a two-step site selection concept, including a screening assessment followed by a comprehensive assessment, to determine suitable locations for UPHES. The screening indicators in the screening assessment comprise geological features, mine water disasters, and minimum installed capacity, while the analytic hierarchy process (AHP) is applied in the comprehensive assessment. Additionally, coal mines in Henan Province are preliminarily screened through the screening assessment and the potential for UPHES is thoroughly investigated. The estimated volume of the drifts and shafts in old coal mines is approximately 1.35 × 107 m3, while in producing coal mines, it is around 2.96 × 107 m3. Furthermore, the corresponding annual potential for UPHES is 1468.9 GWh and 3226.3 GWh, respectively. By consuming surplus wind and solar power, UPHES is able to reduce 4.68 × 105 tonnes of carbon dioxide (CO2) emissions. The study provides preliminary guidance for policy-makers in developing UPHES in old coal mines.
Funder
Henan Institute for Chinese Development Strategy of Engineering and Technology Science and Technology Department of Sichuan Province Project
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
Reference60 articles.
1. Advances in Subsea Carbon Dioxide Utilization and Storage;Luo;Energy Rev.,2023 2. Fracture Initiation and Propagation of Supercritical Carbon Dioxide Fracturing in Calcite-Rich Shale: A Coupled Thermal-Hydraulic-Mechanical-Chemical Simulation;Wu;Int. J. Rock Mech. Min. Sci.,2023 3. Wu, L., Hou, Z., Luo, Z., Xiong, Y., Zhang, N., Luo, J., Fang, Y., Chen, Q., and Wu, X. Numerical Simulations of Supercritical Carbon Dioxide Fracturing: A Review. J. Rock Mech. Geotech. Eng., 2022. in press. 4. Cao, C., Liao, J., Hou, Z., Xu, H., Mehmood, F., and Wu, X. (2020). Utilization of CO2 as Cushion Gas for Depleted Gas Reservoir Transformed Gas Storage Reservoir. Energies, 13. 5. Gleaning Insights from German Energy Transition and Large-Scale Underground Energy Storage for China’s Carbon Neutrality;Xie;Int. J. Min. Sci. Technol.,2023
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