Optimization of Load Distribution Method for Hydropower Units Based on Output Fluctuation Constraint and Double-Layer Nested Model
During the load distribution of hydropower units, the frequent crossing of vibration zones as well as large output fluctuations affect the stability of the power station. A multi-objective double-layer intelligent nesting model that considers the constraint of the output fluctuation of units is prop...
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| Format: | Article |
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MDPI AG
2024-02-01
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| Series: | Mathematics |
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| Online Access: | https://www.mdpi.com/2227-7390/12/5/662 |
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| author | Hong Pan Zhengliang Luo Chenyang Hang Yuan Zheng Fang Feng Xiaonan Zheng |
| author_facet | Hong Pan Zhengliang Luo Chenyang Hang Yuan Zheng Fang Feng Xiaonan Zheng |
| author_sort | Hong Pan |
| collection | DOAJ |
| description | During the load distribution of hydropower units, the frequent crossing of vibration zones as well as large output fluctuations affect the stability of the power station. A multi-objective double-layer intelligent nesting model that considers the constraint of the output fluctuation of units is proposed to address these problems. The nonlinear constraint unit commitment optimization model layer is built based on outer dynamic programming, and the load distribution optimization model layer is constructed based on the improved biogeography-based optimization algorithm. Simultaneously, the unit output fluctuation constraint is established based on whether the unit combination changes in order to limit the unit output fluctuation. The results of this model indicate that compared with traditional load allocation models, the application of the method proposed in this paper can reduce the fluctuation range of unit output by 85.01%. In addition, except for the inevitable vibration zone crossings during startup and shutdown processes, the unit does not cross the vibration zone during operation, which greatly improves the unit’s vibration isolation and optimization capabilities. The multi-objective double-layer intelligent nested model proposed in this paper has significant advantages in the field of load allocation for hydropower units. It effectively improves the stability and reliability of unit operation, and this method can be applied to practical load allocation processes. It is of great significance for the research on load allocation optimization of hydropower units. |
| first_indexed | 2024-04-25T00:24:12Z |
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| id | doaj.art-3f11f165f916468db6b2a53f383ac160 |
| institution | Directory Open Access Journal |
| issn | 2227-7390 |
| language | English |
| last_indexed | 2024-04-25T00:24:12Z |
| publishDate | 2024-02-01 |
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| series | Mathematics |
| spelling | doaj.art-3f11f165f916468db6b2a53f383ac1602024-03-12T16:49:52ZengMDPI AGMathematics2227-73902024-02-0112566210.3390/math12050662Optimization of Load Distribution Method for Hydropower Units Based on Output Fluctuation Constraint and Double-Layer Nested ModelHong Pan0Zhengliang Luo1Chenyang Hang2Yuan Zheng3Fang Feng4Xiaonan Zheng5College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, ChinaMing Yang Smart Energy Group Limited, Zhongshan 528436, ChinaCollege of Energy and Electrical Engineering, Hohai University, Nanjing 211100, ChinaCollege of Energy and Electrical Engineering, Hohai University, Nanjing 211100, ChinaShanghai Aircraft Design and Research Institute, Shanghai 200135, ChinaCollege of Energy and Electrical Engineering, Hohai University, Nanjing 211100, ChinaDuring the load distribution of hydropower units, the frequent crossing of vibration zones as well as large output fluctuations affect the stability of the power station. A multi-objective double-layer intelligent nesting model that considers the constraint of the output fluctuation of units is proposed to address these problems. The nonlinear constraint unit commitment optimization model layer is built based on outer dynamic programming, and the load distribution optimization model layer is constructed based on the improved biogeography-based optimization algorithm. Simultaneously, the unit output fluctuation constraint is established based on whether the unit combination changes in order to limit the unit output fluctuation. The results of this model indicate that compared with traditional load allocation models, the application of the method proposed in this paper can reduce the fluctuation range of unit output by 85.01%. In addition, except for the inevitable vibration zone crossings during startup and shutdown processes, the unit does not cross the vibration zone during operation, which greatly improves the unit’s vibration isolation and optimization capabilities. The multi-objective double-layer intelligent nested model proposed in this paper has significant advantages in the field of load allocation for hydropower units. It effectively improves the stability and reliability of unit operation, and this method can be applied to practical load allocation processes. It is of great significance for the research on load allocation optimization of hydropower units.https://www.mdpi.com/2227-7390/12/5/662unit output fluctuationdouble-layer nested modelimproved biogeography-based optimization algorithmload distribution optimizationhydropower unitcrossing vibration zone |
| spellingShingle | Hong Pan Zhengliang Luo Chenyang Hang Yuan Zheng Fang Feng Xiaonan Zheng Optimization of Load Distribution Method for Hydropower Units Based on Output Fluctuation Constraint and Double-Layer Nested Model Mathematics unit output fluctuation double-layer nested model improved biogeography-based optimization algorithm load distribution optimization hydropower unit crossing vibration zone |
| title | Optimization of Load Distribution Method for Hydropower Units Based on Output Fluctuation Constraint and Double-Layer Nested Model |
| title_full | Optimization of Load Distribution Method for Hydropower Units Based on Output Fluctuation Constraint and Double-Layer Nested Model |
| title_fullStr | Optimization of Load Distribution Method for Hydropower Units Based on Output Fluctuation Constraint and Double-Layer Nested Model |
| title_full_unstemmed | Optimization of Load Distribution Method for Hydropower Units Based on Output Fluctuation Constraint and Double-Layer Nested Model |
| title_short | Optimization of Load Distribution Method for Hydropower Units Based on Output Fluctuation Constraint and Double-Layer Nested Model |
| title_sort | optimization of load distribution method for hydropower units based on output fluctuation constraint and double layer nested model |
| topic | unit output fluctuation double-layer nested model improved biogeography-based optimization algorithm load distribution optimization hydropower unit crossing vibration zone |
| url | https://www.mdpi.com/2227-7390/12/5/662 |
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