调压室对水电站输水系统小波动过渡过程的影响
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摘要
为了减小水电站输水系统过渡过程中产生的水锤压力,常常会在输水系统中设置调压室。通过基于不考虑水体弹性的理论推导以及考虑水体弹性的数值模拟,对无调压室及有调压室两种方案下输水系统小波动的过渡过程进行比较分析,以便较为全面地对设置调压室或不设置调压室是否会对水电站输水系统小波动的过渡过程产生影响展开研究。研究结果表明:在相同布置条件下,无调压室及有调压室两种方案的输水系统的小波动过渡过程均是稳定的;设置有调压室的输水系统小波动的过渡过程要优于未设置调压室的输水系统小波动的过渡过程。从研究结果来看,设置调压室对水电站输水系统的小波动过渡过程具有改善作用。
It is common to arrange a surge chamber in the water conveyance system of hydropower plants to reduce water-hammer pressure occurring during the transition process caused by small fluctuation. We compared and analyzed the small fluctuation in the transition process of water conveyance system with and without a surge chamber,in which water elasticity is considered and ignored respectively. The results show that under the same layout,both of the two schemes yield a rather stable transition process caused by small fluctuation; however,water conveyance system with a surge chamber performs better than that of the system without a surge chamber. The results reveal that setting up a surge chamber helps improve transition process of water conveyance system caused by small fluctuation.
It is common to arrange a surge chamber in the water conveyance system of hydropower plants to reduce water-hammer pressure occurring during the transition process caused by small fluctuation. We compared and analyzed the small fluctuation in the transition process of water conveyance system with and without a surge chamber,in which water elasticity is considered and ignored respectively. The results show that under the same layout,both of the two schemes yield a rather stable transition process caused by small fluctuation; however,water conveyance system with a surge chamber performs better than that of the system without a surge chamber. The results reveal that setting up a surge chamber helps improve transition process of water conveyance system caused by small fluctuation.
引文
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[3]赵修龙,张健,俞晓东.基于有限体积法的有压管道水锤计算[J].水电能源科学,2014,32(2):164-166,182.
[4]杨开林.电站与电泵中的水力瞬变及调节[M].北京:中国水利水电出版社.2000.
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[6]李路明,张健,陈胜.负荷扰动及工作水头对水电站小波动过渡过程的影响[J].水电能源科学,2016,34(2):166-168,207.
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[14]鲍慧琼.新疆某电站引水系统压力水道优化计算[J].水利建设与管理,2011,31(3):20-24.
[15]焦洁,张健.中小型引水式水电站调压阀尺寸优化[J].水电能源科学,2012(5):105-107,214.
[16]杨建东,詹佳佳,鲍海艳.调压室位置对调保参数的影响[J].水动力学研究与进展(A辑),2007(2):162-167.
[17]杨建东,汪正春,詹佳佳.上游调压室设置条件的探讨[J].水力发电学报,2008(5):114-117.
[18]鲍海艳,付亮,杨建东.基于调节保证的上游调压室最佳位置的确定[J].水利水电技术,2013(6):117-120.
[19]刘启钊,胡明.水电站:第4版[M].北京:中国水利水电出版社,2010.
[20]蔡尚峰.自动控制理论[M].北京:机械工业出版社,1983.
[21]俞晓东,张健,苗帝,等.尾水岔管在调压室后交汇的水电站小波动稳定分析[J].水利学报,2014,45(4):458-466.
[2]王洪亮,俞晓东,陈胜,等.吉林台二级水电站水力干扰过渡过程研究[J].水电能源科学,2009(5):169-171.
[3]赵修龙,张健,俞晓东.基于有限体积法的有压管道水锤计算[J].水电能源科学,2014,32(2):164-166,182.
[4]杨开林.电站与电泵中的水力瞬变及调节[M].北京:中国水利水电出版社.2000.
[5]俞晓东,张健,刘甲春.联合运行水电站水力机械系统小波动稳定性研究[J].水利学报,2017,48(2):234-240.
[6]李路明,张健,陈胜.负荷扰动及工作水头对水电站小波动过渡过程的影响[J].水电能源科学,2016,34(2):166-168,207.
[7]俞晓东,李高会,卢伟华.基于两种数学模型的水力-机械系统小波动稳定分析[J].水电能源科学,2009,27(5):172-175.
[8]索丽生.设置上下游双调压室的水力-机械系统的小波动稳定分析[J].华东水利学院学报,1984(4):33-43.
[9]何喻,张健,蔡朝.不含调压室的长引水管道水电站小波动稳定分析[J].中国农村水利水电,2012(12):164-167.
[10]Wylie E B,Streeter V L.Hydraulic Transient[M].清华大学流体传动与控制教研室译.北京:水利电力出版社,1983.
[11]沈祖诒.水轮机调节[M].北京:中国水利水电出版社,1996.
[12]周建旭,郑源.水电站小波动稳定性分析方法的研究[J].江西水利科技,2004(3):125-128.
[13]赵修龙,张健,何露.生态机组不同布置形式过渡过程研究[J].南水北调与水利科技,2014,12(5):11-13.
[14]鲍慧琼.新疆某电站引水系统压力水道优化计算[J].水利建设与管理,2011,31(3):20-24.
[15]焦洁,张健.中小型引水式水电站调压阀尺寸优化[J].水电能源科学,2012(5):105-107,214.
[16]杨建东,詹佳佳,鲍海艳.调压室位置对调保参数的影响[J].水动力学研究与进展(A辑),2007(2):162-167.
[17]杨建东,汪正春,詹佳佳.上游调压室设置条件的探讨[J].水力发电学报,2008(5):114-117.
[18]鲍海艳,付亮,杨建东.基于调节保证的上游调压室最佳位置的确定[J].水利水电技术,2013(6):117-120.
[19]刘启钊,胡明.水电站:第4版[M].北京:中国水利水电出版社,2010.
[20]蔡尚峰.自动控制理论[M].北京:机械工业出版社,1983.
[21]俞晓东,张健,苗帝,等.尾水岔管在调压室后交汇的水电站小波动稳定分析[J].水利学报,2014,45(4):458-466.