先进绝热压缩空气储能中蓄热系统的改进
摘要:先进绝热压缩空气储能系统（advanced adiabatic compressed air energy storage system，AA-CAES）是一种大规模电能存储与转化技术，对可再生能源并网及电网调峰有重要作用。为了研究蓄热系统结构布置、运行方式对储能系统性能的影响，对蓄热系统热力学模型进行分析并在传统结构的基础上提出带高温蓄热系统的AA-CAES。结果表明：压气机与膨胀机级数相近时，储能效率最高，级数差别越大效率越低；当压气机与膨胀机级数相等时，随着级数的增加，储能密度逐渐降低；当换热器中水的热容率与空气热容率接近相等时，储能效率最高；带高温蓄热系统的AA-CAES能够获得更大的储能密度，系统运行灵活性也增强，但储能效率有所下降。
Abstract：Advanced adiabatic compressed air energy storage system （AA-CAES） is a kind of large scale electric energy storage and conversion technology which plays an important role in renewable energy grid and power peaking. In order to study the influence of the structure and operation mode of the thermal energy storage system on the performance of AA-CAES，the thermodynamic model of the thermal energy storage system is analyzed and a high temperature thermal energy storage system based on the traditional structure is proposed in this paper. The results show that when the stages of the compressor and expander are similar，the energy storage efficiency is the highest，and the greater the difference of the stages，the lower the energy storage efficiency. When the stages of the compressor and expander are equal，the energy storage density is gradually reduced with the increasing stages. When the thermal capacity rates of water and air in the heat exchanger are nearly equal，the energy storage efficiency is the highest. AA-CAES with high temperature thermal energy storage system can achieve a greater energy storage density，and the system operating flexibility is also enhanced，but the energy storage efficiency has declined slightly.
标题：先进绝热压缩空气储能中蓄热系统的改进
title:Modification of Thermal Energy Storage System in AA-CAES
作者：韩中合, 庞永超
authors:HAN Zhonghe , PANG Yongchao
关键词：压缩空气储能,蓄热系统,高温蓄热,储能效率,
keywords:AA-CAES,thermal energy storage system,high temperature thermal energy storage,energy storage efficiency,
