Critical stable sectional area of downstream surge tank of hydropower plant with sloping ceiling tailrace tunnel.
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| Title: | Critical stable sectional area of downstream surge tank of hydropower plant with sloping ceiling tailrace tunnel. |
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| Authors: | Guo, Wencheng1 (AUTHOR) wencheng@hust.edu.cn, Zhu, Daoyi1 (AUTHOR) |
| Source: | Energy Science & Engineering. Aug2021, Vol. 9 Issue 8, p1090-1102. 13p. |
| Subject Terms: | *Hydroelectric power plants, *Tunnels, *Ceilings, *Stability theory, *Nonlinear theories, *Tunnel design & construction, *Water power |
| Abstract: | This paper investigates the critical stable sectional area (CSSA) of downstream surge tank (DST) of hydropower plant with sloping ceiling tailrace tunnel (SCTT). Firstly, two types of nonlinear mathematical model of hydropower plant with SCTT during transient process are established. Then, the criterion of operation stability of hydropower plant is obtained based on nonlinear stability theory. Formulae for CSSAs of DST under two types of mathematical model are derived. Finally, the similarities, differences, and relationships of different CSSAs are clarified. The effect mechanisms of the assumption of steady power output of hydro‐turbine and the SCTT on CSSA of DST are revealed. The recommended use conditions of different CSSAs are explained. The results indicate that, under the assumption of steady power output of hydro‐turbine, the formula for CSSA of DST of hydropower plant with SCTT is analytical and has a simple expression. Under the complete model, the formula for CSSA of DST of hydropower plant with SCTT is not analytical and has a complicated expression. The former formula is suggested to be given the priority of use because of good precision and concise expression. SCTT can improve the stability of hydropower plant and decrease the CSSA of DST. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 151721636 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Critical stable sectional area of downstream surge tank of hydropower plant with sloping ceiling tailrace tunnel. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Guo%2C+Wencheng%22">Guo, Wencheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wencheng@hust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Daoyi%22">Zhu, Daoyi</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energy+Science+%26+Engineering%22">Energy Science & Engineering</searchLink>. Aug2021, Vol. 9 Issue 8, p1090-1102. 13p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Hydroelectric+power+plants%22">Hydroelectric power plants</searchLink><br />*<searchLink fieldCode="DE" term="%22Tunnels%22">Tunnels</searchLink><br />*<searchLink fieldCode="DE" term="%22Ceilings%22">Ceilings</searchLink><br />*<searchLink fieldCode="DE" term="%22Stability+theory%22">Stability theory</searchLink><br />*<searchLink fieldCode="DE" term="%22Nonlinear+theories%22">Nonlinear theories</searchLink><br />*<searchLink fieldCode="DE" term="%22Tunnel+design+%26+construction%22">Tunnel design & construction</searchLink><br />*<searchLink fieldCode="DE" term="%22Water+power%22">Water power</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper investigates the critical stable sectional area (CSSA) of downstream surge tank (DST) of hydropower plant with sloping ceiling tailrace tunnel (SCTT). Firstly, two types of nonlinear mathematical model of hydropower plant with SCTT during transient process are established. Then, the criterion of operation stability of hydropower plant is obtained based on nonlinear stability theory. Formulae for CSSAs of DST under two types of mathematical model are derived. Finally, the similarities, differences, and relationships of different CSSAs are clarified. The effect mechanisms of the assumption of steady power output of hydro‐turbine and the SCTT on CSSA of DST are revealed. The recommended use conditions of different CSSAs are explained. The results indicate that, under the assumption of steady power output of hydro‐turbine, the formula for CSSA of DST of hydropower plant with SCTT is analytical and has a simple expression. Under the complete model, the formula for CSSA of DST of hydropower plant with SCTT is not analytical and has a complicated expression. The former formula is suggested to be given the priority of use because of good precision and concise expression. SCTT can improve the stability of hydropower plant and decrease the CSSA of DST. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=151721636 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/ese3.874 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 1090 Subjects: – SubjectFull: Hydroelectric power plants Type: general – SubjectFull: Tunnels Type: general – SubjectFull: Ceilings Type: general – SubjectFull: Stability theory Type: general – SubjectFull: Nonlinear theories Type: general – SubjectFull: Tunnel design & construction Type: general – SubjectFull: Water power Type: general Titles: – TitleFull: Critical stable sectional area of downstream surge tank of hydropower plant with sloping ceiling tailrace tunnel. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Guo, Wencheng – PersonEntity: Name: NameFull: Zhu, Daoyi IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 20500505 Numbering: – Type: volume Value: 9 – Type: issue Value: 8 Titles: – TitleFull: Energy Science & Engineering Type: main |
| ResultId | 1 |
