某300MW压缩空气储能透平深度滑压运行参数优化研究  

Optimization of Deep Sliding Pressure Operation Parameters of a 300MW Compressed Air Energy Storage Turbine

作　　者：王娟丽 罗方[1] 范小平[1] 钱禹龙 张浩天 WANG Juan-li;LUO Fang;FAN Xiao-ping;QIAN Yu-long;ZHANG Hao-tian(Dongfang Steam Turbine Co.,Ltd.,Deyang 618000,China)

机构地区：[1]东方汽轮机有限公司,德阳618000

出　　处：《汽轮机技术》2024年第4期312-314,共3页Turbine Technology

摘　　要：压缩空气储能利用低谷电、弃风电、弃光电将大气压缩,并将高压空气密封在盐穴或人造硐室等高压储气室中,在电网负荷高峰期释放高压空气推动透平发电。随着释能过程的进行,高压储气室的压力逐渐减小,为了充分利用储气室的有限空间,透平需要深度滑压运行。以某300MW级压缩空气储能空气透平为例,空气透平为两段膨胀,滑压范围15MPa~9MPa,采用经济性较好的节流+补气运行方式,对比一段补气、两段补气对经济性影响,得出一段补气方案补气点压力越大,平均气耗越小。一段补气方案最佳设计点压力为压力范围的中间值。两段补气方案可一定程度降低单个补气阀的补气量,两段补气方案设计点压力选为滑压范围的1/3压力、2段补气阀开启点压力为滑压范围的2/3压力。Compressed air energy storage uses low power,abandoned wind power,abandoned electricity to compress the normal temperature and pressure air,and sealed high pressure air in salt caverns or artificial chambers and other high pressure gas storage chambers.The high pressure air is released to drive the turbine during the peak load of the grid.With the progress of the energy release process,the pressure of the high-pressure gas reservoir gradually decreases.In order to make full use of the limited space of the gas reservoir,we need the deep sliding pressure operation of the turbine.Taken a 300MW class compressed air storage air turbine as an example.The air turbine has two expansion stages and the sliding pressure range is 15~9MPa.The operation mode of throttling and air supplement with is adopted.The influence of one stage and two stages of air supplement on economy is compared and analyzed.The optimal design point pressure is the middle value of the pressure range.The two-stage air supplement scheme can reduce the air supplement volume of a single air supply valve to some extent.The design point pressure of the two-stage air supplement scheme is selected as 1/3 pressure of the sliding pressure range,and the opening point pressure of the two-stage air supply valve is 2/3 pressure of the sliding pressure range.

关 键 词：压缩空气 空气透平 两段补气 一段补气 气耗 

分 类 号：TK02[动力工程及工程热物理]