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安徽省关闭/废弃矿井地下空间储能潜力及减碳效益

The potential of underground space energy storage and carbon reduction benefits of closed/abandoned mines in anhui province

  • 摘要: 随着“双碳”目标的持续推进,构建以可再生能源为主体的新型电力系统已成为我国能源转型的核心任务。大规模、高灵活性的储能技术需求与日俱增,这为关闭/废弃矿井抽水蓄能电站的开发提供了重要发展机遇。对安徽省关闭/废弃矿井地下空间抽水蓄能建设潜力进行评估,以期解决选址等因素对传统抽水蓄能电站建设的制约,探索矿区绿色转型与新型电力系统协同发展的创新路径,推进安徽省抽水蓄能高质量发展。通过文献计量与政策分析详细总结了近年抽水蓄能电站发展规划,分析了当前关闭/废弃矿井抽水蓄能电站建设的发展趋势,并结合安徽省关闭煤矿位置、地下空间规模和水资源分布等抽水蓄能资源禀赋,将近年全省60处关闭/废弃矿井按距主要水系距离划分为3个梯度:50 km内高潜力区、50~100 km中潜力区以及100 km外低潜力区,并分别选取典型矿井开展精细化评估,探讨抽水蓄能电站建设规模。以两淮矿区朱庄煤矿为例,从地下可利用空间、地下储水库有效库容等方面详细分析了朱庄煤矿建造抽水蓄能电站的可行性并设计朱庄煤矿拟建抽水蓄能电站装机容量达17.87 MW。采用关闭/废弃矿井抽水蓄能电站碳排放量计算模型,计算其相较传统火力发电碳减排量约为1.13万t/d。结果表明:利用关闭/废弃矿井建造抽水蓄能电站可以成为安徽省新型储能建设发展的有效支撑,为安徽省能源结构调整和碳中和目标作出积极贡献。

     

    Abstract: With the continuous advancement of the “double carbon” goal, the construction of a new power system with renewable energy as the main body has become the core task of China 's energy transformation. The demand for large-scale and highly flexible energy storage technology is steadily on the increase, which provides an important development opportunity for the development of closed/abandoned mine pumped storage power stations. The potential of pumped storage construction in underground space of closed / abandoned mines in Anhui Province is evaluated in order to solve the constraints of site selection and other factors on the construction of traditional pumped storage power stations, explore the innovative path of green transformation of mining areas and coordinated development of new power systems, and promote the high-quality development of pumped storage in Anhui Province. The development planning of pumped storage power stations in recent years is summarized through bibliometrics and policy analysis, and the development trend of the construction of pumped storage power stations in closed/abandoned mines is analyzed. Combined with the pumped storage resource endowments such as the location of closed coal mines, the scale of underground space and the distribution of water resources in Anhui Province, the 60 closed/abandoned mines in the province in recent years are divided into three gradients according to the distance from the main water system: high potential area within 50 km, medium potential area within 50-100 km and low potential area outside 100 km, and typical mines are selected to carry out fine evaluation and discuss the construction scale of pumped storage power stations. Taking Zhuzhuang Coal Mine in Huainan-Huaibei Coal Mines mining area as an example, the feasibility of building pumped storage power station in Zhuzhuang Coal Mine is analyzed in detail from the aspects of underground available space and effective storage capacity of underground storage reservoir. The installed capacity of the proposed pumped storage power station in Zhuzhuang Coal Mine is designed to reach 17.87 MW. The carbon emission calculation model of closed/abandoned mine pumped storage power station is used to calculate the carbon emission reduction of 11,300 t/d compared with traditional thermal power generation. The results show that the use of closed/abandoned mines to build pumped storage power stations can become an effective support for the development of new energy storage construction in Anhui Province, and make a positive contribution to the adjustment of energy structure and carbon neutrality in Anhui Province.

     

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