摘要
压缩空气储能技术具有提升风能与太阳能等可再生资源电能质量的潜力,通过此项技术实现间歇性与不稳定性可再生电力的有效储存,进而在电网负荷高峰期以优质电力的形式稳定输出。结合热力学分析方法设计了储能功率56.58 MW,释能输出功率154.76 MW的压缩空气储能系统。在释能阶段透平机组配置上,参照GE 9171E燃机布置第二级透平入口参数,并以其812.41 K高温烟气余热提供第一级透平工质所需全部热量,无需为第一级透平配备专门燃烧器。在此思路下设计的压缩空气储能系统,热耗可降低至3783.96 kJ/(kW·h),储能系统的能量转换效率也高达56.11%。
Compressed air energy storage （CAES） has the potential to improve the quality of renewable electricity from wind and solar energy. Using such a technology, the intermittent renewable electricity can be stored at off peak hours, and released in a steady manner at peak time of electricity grid. This paper considers a CAES system for an electricity storage capacity of 56.58 MW and an output capacity of 154.76 MW. For the selection of turbines for the energy release step, reference is made to the second stage turbine of the GE 9171E configuration. Flue gas temperature of the second stage turbine could reach 812.41 K to satisfy the heat supply requirement for heating the compressed air before entering the first stage turbine. As a result, the high pressure combustor for the first turbine could be removed from the system. The heat consumption for the CAES system could be as low as 3783.96 kJ/（kW-h） and the system energy conversion efficiency could reach 56.11%.
出处
《储能科学与技术》
CAS
2013年第6期615-619,共5页
Energy Storage Science and Technology
基金
广东省自然科学基金项目(S2013040013104)
中国博士后科学基金项目(2013M531456)
关键词
可再生能源电力
压缩空气储能
分级压缩
回热技术
renewable electricity
compressed air energy storage （CAES）
multi-stage compression
waste heat recovery
