面向废弃能量收集的风电-压缩空气储能耦合发电系统
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摘要
目前,风电与压缩空气储能耦合发电系统是发电后再与压缩空气储能系统连接,对于风电场一些不能发电工况的能量无法利用。通过风力发电功率特性和运行状态分析,找出产生废弃能量的2种工况:起动风速到切入风速期间的低风速工况和电网原因弃风工况,设计了一套新型的风电-压缩空气储能耦合发电系统,通过啮合切换装置可以进行风机和压缩机、发电机的切换运行。通过工况的效率分析,系统在2种工况时,可以回收废弃能量,实现电能输出,有效提高风电场的能量利用率。
At present, the coupling power generation system of wind power and compressed air energy storage is connected with the compressed air energy storage system after power generation, which is unable to utilize the energy in some power generation conditions of wind farms. In this paper, through analyzing the power characteristics and operation state of wind power generation, it is found that the two working conditions of waste energy generation are the low wind speed working condition during the period from starting wind speed to cutting wind speed and the wind abandoning working condition caused by power grid.A new type of wind power-compressed air energy storage coupling power generation system is designed, which can be used to switch between fan, compressor and generator through meshing switching device. The system can recover the waste energy in two working conditions through the efficiency analysis of working conditions, realize the power output, and improve the energy utilization rate of the wind farm effectively.
At present, the coupling power generation system of wind power and compressed air energy storage is connected with the compressed air energy storage system after power generation, which is unable to utilize the energy in some power generation conditions of wind farms. In this paper, through analyzing the power characteristics and operation state of wind power generation, it is found that the two working conditions of waste energy generation are the low wind speed working condition during the period from starting wind speed to cutting wind speed and the wind abandoning working condition caused by power grid.A new type of wind power-compressed air energy storage coupling power generation system is designed, which can be used to switch between fan, compressor and generator through meshing switching device. The system can recover the waste energy in two working conditions through the efficiency analysis of working conditions, realize the power output, and improve the energy utilization rate of the wind farm effectively.
引文
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[13]国家能源局.2017年风电并网运行情况[EB/OL].http://www.nea.gov.cn/2018-02/01/c_136952234.html.
[2]王宗瑞,李昔真,苏则立.中国风光互补联合发电技术的现状与展望[J].节能,2017,36(8):4-7,2.
[3]张金艳.一种基于可靠出力的储能容量的配置方法[J].节能,2018,37(1):9-12.
[4]张新敬.压缩空气储能系统若干问题的研究[D].北京:中国科学院研究生院,2011.
[5]梅生伟,薛小代,陈来军,等.压缩空气储能技术及其应用探讨[J].南方电网技术,2016,10(3):11-15.
[6]郭欢.新型压缩空气储能系统性能研究[D].北京:中国科学院大学,2013.
[7]徐玉杰,陈海生,刘佳,等.风光互补的压缩空气储能与发电一体化系统特性分析[J].中国电机工程学报,2012,32(20):88-95,144.
[8]李姚旺,苗世洪,罗星,等.含压缩空气储能电力系统日前-日内协调调度策略[J].中国电机工程学报,2018,38(10):2849-2860,3136.
[9]Zafirakis D,Kaldellis J K.Economic evaluation of the dual mode CAESsolution for increased wind energy contribution in auto nomousisland networks[J].Energy Policy,2009,37:1958-1969.
[10]Denholm P,Sioshansi R.The value of compressed air energy storagewith wind in transmission-constrained electric power systems[J].Energy Policy,2009,37(8):3149-3158.
[11]贵州乌江源祖安山风电场可行性研究报告[R].贵阳:中国水电顾问集团贵阳勘测设计研究院,2010.
[12]张新敬,陈海生,刘金超,等.压缩空气储能技术研究进展[J].储能科学与技术,2012,1(1):26-40.
[13]国家能源局.2017年风电并网运行情况[EB/OL].http://www.nea.gov.cn/2018-02/01/c_136952234.html.