采用虚拟恒压水池增容的抽水蓄能电站设计与运行策略
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摘要
对于水头变幅大的抽水蓄能电站,往往找不到满足水头变幅范围的水轮机,造成了电站水库库容浪费,限制了日发电量。为增大可利用库容,引入了液压恒压网络的概念,采用虚拟恒压水池作为液压恒压网络的液压蓄能器,将多组不同面积比的液压缸作为液压变压器,使抽水蓄能电站水库大变幅的水头通过液压传动机构转变为虚拟恒压水池小变幅的水头,再进行水轮机/水泵的发电与储能,保证水轮机高效运行,增加可持续发电量。
For the pumped-storage power station with large water head variation,the pump/turbine is often not found to meet the variation range of water head,which will cause the waste of reservoir capacity and limit the daily power generation. In order to increase available storage capacity,the concept of hydraulic constant pressure network is introduced. A virtual constant pressure tank is used as a hydraulic accumulator in the hydraulic constant pressure network,and a group of hydraulic cylinders with different area ratios are used as hydraulic transformers. The water head with large variation range in the reservoir of pumped-storage power station is transformed into the head with small and medium variation range of virtual constant pressure water tank through the hydraulic transmission mechanism,and then the power generation and energy storage of pump/turbine will be carried out. It ensures the efficient operation of turbine and increases the capacity of sustainable power generation.
For the pumped-storage power station with large water head variation,the pump/turbine is often not found to meet the variation range of water head,which will cause the waste of reservoir capacity and limit the daily power generation. In order to increase available storage capacity,the concept of hydraulic constant pressure network is introduced. A virtual constant pressure tank is used as a hydraulic accumulator in the hydraulic constant pressure network,and a group of hydraulic cylinders with different area ratios are used as hydraulic transformers. The water head with large variation range in the reservoir of pumped-storage power station is transformed into the head with small and medium variation range of virtual constant pressure water tank through the hydraulic transmission mechanism,and then the power generation and energy storage of pump/turbine will be carried out. It ensures the efficient operation of turbine and increases the capacity of sustainable power generation.
引文
[1]范欣柯.水头变化幅度大条件下水电工程水轮机组选型研究[J].价值工程,2018,37(2):104-105.
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[12]傅昊.虚拟抽水蓄能试验装置本体及通讯子系统方案设计[D].北京:华北电力大学,2015.
[13]卢红影,姜继海,张维官,等.基于液压恒压网络系统的液压变压器控制液压缸系统[J].吉林大学学报:工学版,2009,39(4):885-890.
[14]周寿明,吴红星,肖翀,等.自由活塞式斯特林直线发电机技术综述[J].微电机,2013,46(12):7-11.
[2]刘胜柱,罗兴錡,梁武科.水头变幅大的混流式水轮机水力设计[J].水力发电学报,2003(4):105-111.
[3]B.A.利钮切夫.水头变化大的水电站设备的技术经济比较[J].水利水电快报,2003,24(11):4-5.
[4]世界最高水头大容量蓄能机组采用变频调速[J].发电设备,2000(6):11.
[5]陈建华,孟庆国,陈振武.抽水蓄能电站变频调速机组的应用现状及发展趋势[C]∥抽水蓄能电站工程建设文集,北京:中国电业出版社,2010.
[6]黄顺礼,葛新.抽水蓄能机组变速技术的进展[J].华中电力,2000,13(1):68-69.
[7]何国任,周思妤.水头变幅大的水电站采用双速发电机提高水轮机效率的研究[C]∥第十九次中国水电设备学术讨论会论文集,北京:中国水利水电出版社,2013.
[8]张维官.液压恒压网络中液压变压器的性能测试与节能效果分析[D].哈尔滨:哈尔滨工业大学,2007.
[9]董宏军,李宇辉,董宏林,等.多负载液压恒压网络运行方式的一种确定方法[J].机床与液压,2005(7):104-105.
[10]姜继海,卢红影,周瑞艳,等.液压恒压网络系统中液压变压器的发展历程[J].东南大学学报:自然科学版,2006,36(5):869-874.
[11]何旭洁.虚拟抽水蓄能电站运行控制系统设计与实现[D].北京:华北电力大学,2015.
[12]傅昊.虚拟抽水蓄能试验装置本体及通讯子系统方案设计[D].北京:华北电力大学,2015.
[13]卢红影,姜继海,张维官,等.基于液压恒压网络系统的液压变压器控制液压缸系统[J].吉林大学学报:工学版,2009,39(4):885-890.
[14]周寿明,吴红星,肖翀,等.自由活塞式斯特林直线发电机技术综述[J].微电机,2013,46(12):7-11.