Article(id=1223204290358005789, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223204286050452333, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20221261, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1655395200000, receivedDateStr=2022-06-17, revisedDate=1660406400000, revisedDateStr=2022-08-14, acceptedDate=null, acceptedDateStr=null, onlineDate=1769564228858, onlineDateStr=2026-01-28, pubDate=1684944000000, pubDateStr=2023-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769564228858, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769564228858, creator=13701087609, updateTime=1769564228858, updator=13701087609, issue=Issue{id=1223204286050452333, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='5', pageStart='1', pageEnd='220', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769564227831, creator=13701087609, updateTime=1769567742010, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223219026013323264, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223204286050452333, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223219026013323265, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223204286050452333, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=93, endPage=96, ext={EN=ArticleExt(id=1223204291507245205, articleId=1223204290358005789, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Study on Relationship Between Interval Time of Successive Load Shedding and Minimum Pressure of Draft Tube Inlet, columnId=1222925283779400191, journalTitle=Water Resources and Power, columnName=WATER CONSERVANCY AND HYDROPOWER ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

The purpose of the paper is to explore connection mechanism between interval time and pressure at draft tube inlet in successive load shedding case. Based on transient flow theory and method of characteristics, numerical simulation calculation of transition process in the successive load shedding case for pumped storage power station with layout of two turbines and one tunnel was carried out. The relationship between flow rate, running track of turbines and minimum pressure at draft tube inlet was analyzed. The result shows that there is a certain most unfavorable interval time making the time-domain asynchronous degree of first wave flow rate in two turbines maximized and the pressure at draft tube inlet is the minimum. At the same time, running track point of the first load shedding turbine is near the upper bending point in the inverse S-region of characteristic curve and running track point of the last one is near the lower bending point. The conclusion can provide a reference for calculation of extreme value of pressure at draft tube inlet in the pumped storage power station.

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为探求相继甩负荷间隔时间与尾水管进口压力最小值之间的内在联系,针对双机一洞布置型式的抽水蓄能电站,基于瞬变流理论和特征线法对相继甩负荷工况水力过渡过程开展数值模拟,分析了相继甩负荷工况下机组流量变化率和运行轨迹与尾水管进口压力最小值之间的联系。结果表明,存在某一最不利相继甩间隔时间使得两台机组第一波流量变化率的时域不同步程度达到最大,则对应的尾水管进口压力达到最小,且此时先甩和后甩机组运行轨迹点分别在特性曲线反S区上弯点和下弯点。研究结果可为抽水蓄能电站尾水管进口压力极值计算提供参考。

, correspAuthors=null, authorNote=null, correspAuthorsNote=
储善鹏(1992-),男,硕士、工程师,研究方向为抽水蓄能电站水力过渡过程,E-mail:
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张永进(1972-),男,教授级高级工程师,研究方向为水电站和长距离输水工程系统布置和结构设计,Email:

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张永进(1972-),男,教授级高级工程师,研究方向为水电站和长距离输水工程系统布置和结构设计,Email:

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相继甩负荷间隔时间与尾水管进口压力最小值的内在联系研究
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张永进 1 , 储善鹏 2
水电能源科学 | 水利水电工程 2023,41(5): 93-96
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水电能源科学 | 水利水电工程 2023, 41(5): 93-96
相继甩负荷间隔时间与尾水管进口压力最小值的内在联系研究
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张永进1 , 储善鹏2
作者信息
  • 1.浙江省水利水电勘测设计院有限责任公司,浙江 杭州 310000
  • 2.浙江省水利防汛技术中心,浙江 杭州 310000
  • 张永进(1972-),男,教授级高级工程师,研究方向为水电站和长距离输水工程系统布置和结构设计,Email:

通讯作者:

储善鹏(1992-),男,硕士、工程师,研究方向为抽水蓄能电站水力过渡过程,E-mail:
Study on Relationship Between Interval Time of Successive Load Shedding and Minimum Pressure of Draft Tube Inlet
Yong-jin ZHANG1 , Shan-peng CHU2
Affiliations
  • 1.Zhejiang Design Institute of Water Conservancy and Hydro-electric Power Co., Ltd., Hangzhou 310000, China
  • 2.Zhejiang Flood Protection Technology Center, Hangzhou 310000, China
出版时间: 2023-05-25 doi: 10.20040/j.cnki.1000-7709.2023.20221261
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为探求相继甩负荷间隔时间与尾水管进口压力最小值之间的内在联系,针对双机一洞布置型式的抽水蓄能电站,基于瞬变流理论和特征线法对相继甩负荷工况水力过渡过程开展数值模拟,分析了相继甩负荷工况下机组流量变化率和运行轨迹与尾水管进口压力最小值之间的联系。结果表明,存在某一最不利相继甩间隔时间使得两台机组第一波流量变化率的时域不同步程度达到最大,则对应的尾水管进口压力达到最小,且此时先甩和后甩机组运行轨迹点分别在特性曲线反S区上弯点和下弯点。研究结果可为抽水蓄能电站尾水管进口压力极值计算提供参考。

抽水蓄能电站  /  相继甩负荷  /  间隔时间  /  尾水管进口压力  /  流量变化率  /  运行轨迹

The purpose of the paper is to explore connection mechanism between interval time and pressure at draft tube inlet in successive load shedding case. Based on transient flow theory and method of characteristics, numerical simulation calculation of transition process in the successive load shedding case for pumped storage power station with layout of two turbines and one tunnel was carried out. The relationship between flow rate, running track of turbines and minimum pressure at draft tube inlet was analyzed. The result shows that there is a certain most unfavorable interval time making the time-domain asynchronous degree of first wave flow rate in two turbines maximized and the pressure at draft tube inlet is the minimum. At the same time, running track point of the first load shedding turbine is near the upper bending point in the inverse S-region of characteristic curve and running track point of the last one is near the lower bending point. The conclusion can provide a reference for calculation of extreme value of pressure at draft tube inlet in the pumped storage power station.

pumped storage power station  /  successive load shedding  /  interval time  /  pressure at draft tube inlet  /  flow rate  /  running track
张永进, 储善鹏. 相继甩负荷间隔时间与尾水管进口压力最小值的内在联系研究. 水电能源科学, 2023 , 41 (5) : 93 -96 . DOI: 10.20040/j.cnki.1000-7709.2023.20221261
Yong-jin ZHANG, Shan-peng CHU. Study on Relationship Between Interval Time of Successive Load Shedding and Minimum Pressure of Draft Tube Inlet[J]. Water Resources and Power, 2023 , 41 (5) : 93 -96 . DOI: 10.20040/j.cnki.1000-7709.2023.20221261
  • 浙江省重大水利科技项目计划(RA2011)
2023年第41卷第5期
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doi: 10.20040/j.cnki.1000-7709.2023.20221261
  • 接收时间:2022-06-17
  • 首发时间:2026-01-28
  • 出版时间:2023-05-25
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  • 收稿日期:2022-06-17
  • 修回日期:2022-08-14
基金
浙江省重大水利科技项目计划(RA2011)
作者信息
    1.浙江省水利水电勘测设计院有限责任公司,浙江 杭州 310000
    2.浙江省水利防汛技术中心,浙江 杭州 310000

通讯作者:

储善鹏(1992-),男,硕士、工程师,研究方向为抽水蓄能电站水力过渡过程,E-mail:
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2种不同金属材料的力学参数

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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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