Nonlinear modeling and operation stability of variable speed pumped storage power station.
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| Title: | Nonlinear modeling and operation stability of variable speed pumped storage power station. |
|---|---|
| Authors: | Guo, Wencheng1 (AUTHOR) wencheng@hust.edu.cn, Zhu, Daoyi1 (AUTHOR) |
| Source: | Energy Science & Engineering. Oct2021, Vol. 9 Issue 10, p1703-1718. 16p. |
| Subject Terms: | *Nonlinear dynamical systems, *Hopf bifurcations, *Variable speed drives, *Equations of state, *Speed, *Nonlinear equations |
| Abstract: | This paper studies the nonlinear modeling and operation stability of variable speed pumped storage power station (PSPS). Firstly, basic equations of variable speed PSPS are established. Nonlinear state equation in the form of relative deviation value is derived by considering supplementary conditions. Then, Hopf bifurcation analysis of variable speed PSPS is carried out. Stable domain of variable speed PSPS is studied. Finally, influence of factors on stability is analyzed. Dynamic response of variable speed PSPS is investigated. The results indicate that variable speed PSPS is a five‐order nonlinear dynamic system. Nonlinear characteristics of variable speed PSPS reflect the nonlinear coupling effect between unit speed and rotor current. The emerged Hopf bifurcation is supercritical. Stable domain locates at the lower side of bifurcation line. Stable domain intuitively reflects and evaluates the stability of variable speed PSPS. When state point locates at stable domain, variable speed PSPS is stable and dynamic response of state variables is damped oscillation. A smaller flow inertia of penstock, a greater head loss of penstock, and a greater slip ratio are favorable for stability of variable speed PSPS. Stable domain under positive disturbance of active power is larger than that under negative disturbance of active power. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 152762489 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Nonlinear modeling and operation stability of variable speed pumped storage power station. – 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>. Oct2021, Vol. 9 Issue 10, p1703-1718. 16p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Nonlinear+dynamical+systems%22">Nonlinear dynamical systems</searchLink><br />*<searchLink fieldCode="DE" term="%22Hopf+bifurcations%22">Hopf bifurcations</searchLink><br />*<searchLink fieldCode="DE" term="%22Variable+speed+drives%22">Variable speed drives</searchLink><br />*<searchLink fieldCode="DE" term="%22Equations+of+state%22">Equations of state</searchLink><br />*<searchLink fieldCode="DE" term="%22Speed%22">Speed</searchLink><br />*<searchLink fieldCode="DE" term="%22Nonlinear+equations%22">Nonlinear equations</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper studies the nonlinear modeling and operation stability of variable speed pumped storage power station (PSPS). Firstly, basic equations of variable speed PSPS are established. Nonlinear state equation in the form of relative deviation value is derived by considering supplementary conditions. Then, Hopf bifurcation analysis of variable speed PSPS is carried out. Stable domain of variable speed PSPS is studied. Finally, influence of factors on stability is analyzed. Dynamic response of variable speed PSPS is investigated. The results indicate that variable speed PSPS is a five‐order nonlinear dynamic system. Nonlinear characteristics of variable speed PSPS reflect the nonlinear coupling effect between unit speed and rotor current. The emerged Hopf bifurcation is supercritical. Stable domain locates at the lower side of bifurcation line. Stable domain intuitively reflects and evaluates the stability of variable speed PSPS. When state point locates at stable domain, variable speed PSPS is stable and dynamic response of state variables is damped oscillation. A smaller flow inertia of penstock, a greater head loss of penstock, and a greater slip ratio are favorable for stability of variable speed PSPS. Stable domain under positive disturbance of active power is larger than that under negative disturbance of active power. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=152762489 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/ese3.943 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 1703 Subjects: – SubjectFull: Nonlinear dynamical systems Type: general – SubjectFull: Hopf bifurcations Type: general – SubjectFull: Variable speed drives Type: general – SubjectFull: Equations of state Type: general – SubjectFull: Speed Type: general – SubjectFull: Nonlinear equations Type: general Titles: – TitleFull: Nonlinear modeling and operation stability of variable speed pumped storage power station. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Guo, Wencheng – PersonEntity: Name: NameFull: Zhu, Daoyi IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 20500505 Numbering: – Type: volume Value: 9 – Type: issue Value: 10 Titles: – TitleFull: Energy Science & Engineering Type: main |
| ResultId | 1 |
