新型氢氧分级燃烧循环储能系统  

An improved energy storage system with novel hydrogen-oxygen staged combustion cycle

作　　者：明珈辉 吴伟亮[1] MING Jiahui;WU Weiliang(School of Mechanical Engineering,Shanghai Jiao Tong University Shanghai 200240,China)

机构地区：[1]上海交通大学机械与动力工程学院

出　　处：《热力发电》2019年第7期155-160,共6页Thermal Power Generation

摘　　要：针对可再生能源并网发电存在波动性的问题,基于对电解水和简单氢氧循环构成的储能系统效率受限原因分析,提出了一种结合电解高压水和高温高压涡轮热力循环技术的新型储能系统构架。该系统通过高压水电解技术,将可再生能源在用电低谷期发出的电能转化为氢气、氧气的化学能和压力能储存;在电网用电高峰期,将高压氢气和氧气通入燃烧室进行分级燃烧,生成的蒸汽进入涡轮膨胀做功,所发电力补充回电网。分析计算表明,改进的新型储能系统能量转换效率比简单氢氧循环构成的储能系统效率提升约6%,效率增幅超过15%。In order to solve the volatility problem of renewable energy grid-connected power generation, based on the reason analysis for low efficiency of the energy storage system composed of water electrolysis and simple hydrogen-oxygen cycle, a new type of energy storage system framework which combines high-pressure water electrolysis and high-pressure, high-temperature turbine cycle technology is proposed. This system converts the electric energy generated by renewable energy during low period into the chemical and pressure energy of hydrogen and oxygen and stores the energy by means of high-pressure water electrolysis technology. During the peak period of grid power consumption, the compressed hydrogen and oxygen enter the combustor for staged combustion, and the generated steam passes through the turbine to do work, driving the generator to generate electricity, thereby replenishing the electricity back to grid. The analysis shows that the energy conversion efficiency of the improved energy storage system is 6% higher than that of the simple hydrogen-oxygen cycle, which increases by more than 15%.

关 键 词：可再生能源 储能 电解水 氢气 热力循环 分级燃烧 效率 

分 类 号：TM619[电气工程—电力系统及自动化]