Short-Term Scheduling for Large-Scale Cascaded Hydropower Systems with Multivibration Zones of High Head.
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| Title: | Short-Term Scheduling for Large-Scale Cascaded Hydropower Systems with Multivibration Zones of High Head. |
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| Authors: | Cheng, Chuntian1, Shen, Jianjian2, Wu, Xinyu3 |
| Source: | Journal of Water Resources Planning & Management. May2012, Vol. 138 Issue 3, p257-267. 11p. |
| Subjects: | Water power, Multivibrators, Peak load, Fluid mechanics, Linear programming |
| Abstract: | Construction of huge hydropower plants in the southern region of China has been rapidly increasing in recent years. These plants usually have multiple vibration zones of high head that have a great effect on short-term scheduling and real-time operations. This paper presents a novel approach for optimizing short-term scheduling of large-scale cascaded hydropower systems with multivibration zones of high head. For the purpose of cutting down peak loads, standard deviation minimization relevant to the remaining load series for thermal systems was chosen as the objective nonlinear function. Before the optimization, unit forbidden operation zones were identified by assembled mathematical techniques and hydro unit commitments were optimized using dynamic programming. The combined sets of forbidden operation zones and hydro unit commitments were repeatedly used during the search process. An optimization framework that combined the progressive optimality algorithm with a vibration zone avoidance strategy was finally presented to solve the short-term hydropower scheduling problem. The proposed methodology was applied to a case study in China and the results obtained indicate that it is able to not only handle complex constraints of multivibration zones, but also provide efficient and feasible solutions for short-term scheduling of large plants. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Water Resources Planning & Management is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 75048720 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Short-Term Scheduling for Large-Scale Cascaded Hydropower Systems with Multivibration Zones of High Head. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Cheng%2C+Chuntian%22">Cheng, Chuntian</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Shen%2C+Jianjian%22">Shen, Jianjian</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Wu%2C+Xinyu%22">Wu, Xinyu</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Water+Resources+Planning+%26+Management%22">Journal of Water Resources Planning & Management</searchLink>. May2012, Vol. 138 Issue 3, p257-267. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Water+power%22">Water power</searchLink><br /><searchLink fieldCode="DE" term="%22Multivibrators%22">Multivibrators</searchLink><br /><searchLink fieldCode="DE" term="%22Peak+load%22">Peak load</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+mechanics%22">Fluid mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Linear+programming%22">Linear programming</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Construction of huge hydropower plants in the southern region of China has been rapidly increasing in recent years. These plants usually have multiple vibration zones of high head that have a great effect on short-term scheduling and real-time operations. This paper presents a novel approach for optimizing short-term scheduling of large-scale cascaded hydropower systems with multivibration zones of high head. For the purpose of cutting down peak loads, standard deviation minimization relevant to the remaining load series for thermal systems was chosen as the objective nonlinear function. Before the optimization, unit forbidden operation zones were identified by assembled mathematical techniques and hydro unit commitments were optimized using dynamic programming. The combined sets of forbidden operation zones and hydro unit commitments were repeatedly used during the search process. An optimization framework that combined the progressive optimality algorithm with a vibration zone avoidance strategy was finally presented to solve the short-term hydropower scheduling problem. The proposed methodology was applied to a case study in China and the results obtained indicate that it is able to not only handle complex constraints of multivibration zones, but also provide efficient and feasible solutions for short-term scheduling of large plants. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Water Resources Planning & Management is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1061/(ASCE)WR.1943-5452.0000174 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 257 Subjects: – SubjectFull: Water power Type: general – SubjectFull: Multivibrators Type: general – SubjectFull: Peak load Type: general – SubjectFull: Fluid mechanics Type: general – SubjectFull: Linear programming Type: general Titles: – TitleFull: Short-Term Scheduling for Large-Scale Cascaded Hydropower Systems with Multivibration Zones of High Head. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Cheng, Chuntian – PersonEntity: Name: NameFull: Shen, Jianjian – PersonEntity: Name: NameFull: Wu, Xinyu IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2012 Type: published Y: 2012 Identifiers: – Type: issn-print Value: 07339496 Numbering: – Type: volume Value: 138 – Type: issue Value: 3 Titles: – TitleFull: Journal of Water Resources Planning & Management Type: main |
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