Exploring water-level fluctuation amplitude in an approach channel under the regulation of a dual cascade hydro-plant in the dry season
Water-level fluctuation is a crucially important hydraulic factor to meet the safety of ship navigation. Due to the uncertainty and evolution of the maximum amplitude of water-level variation in the approach channel, the river reach between two dams located along the Yangtze River in China is select...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-04-01
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| Series: | Water Supply |
| Subjects: | |
| Online Access: | http://ws.iwaponline.com/content/22/4/4159 |
| _version_ | 1817985490750537728 |
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| author | Zhiyong Wan Yun Li Jianfeng An Xiaogang Wang Long Cheng Yipeng Liao |
| author_facet | Zhiyong Wan Yun Li Jianfeng An Xiaogang Wang Long Cheng Yipeng Liao |
| author_sort | Zhiyong Wan |
| collection | DOAJ |
| description | Water-level fluctuation is a crucially important hydraulic factor to meet the safety of ship navigation. Due to the uncertainty and evolution of the maximum amplitude of water-level variation in the approach channel, the river reach between two dams located along the Yangtze River in China is selected as a study area and the impact of various operating conditions of the cascade hydro-plant on the maximum amplitude of water-level variation at typical sites is revealed combining the orthogonal test method and a hydrodynamic model. In addition, the critical threshold for the water-level variation at the lower lock head of the ship lift is explored using maximum entropy method. Results demonstrate that flow variation and regulation time are the most prominent factors affecting water-level fluctuation at the lower lock head of the ship lift, and the existing standard (0.5 m within 1 h and 0.3 m within 30 min) for controlling the maximum variation in water level at the lower lock head of the ship lift is reasonable and more safety oriented. This study provides a novel perspective to understand the response of water-level fluctuation to the stochasticity of operating conditions for the cascade hydropower stations. HIGHLIGHTS
A one-dimensional hydrodynamic model was developed for validating the water-level fluctuation in the approach channel based on a physics model test.;
Using orthogonal array design method to address the intricate scenarios from the dual cascade hydropower stations.;
Using maximum entropy method (MEM) to examine the maximum water-level variation under the operation of large-scale cascade hydropower stations.; |
| first_indexed | 2024-04-13T23:58:45Z |
| format | Article |
| id | doaj.art-d33ddb252e2e45639373dd8bf5bfa84c |
| institution | Directory Open Access Journal |
| issn | 1606-9749 1607-0798 |
| language | English |
| last_indexed | 2024-04-13T23:58:45Z |
| publishDate | 2022-04-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Supply |
| spelling | doaj.art-d33ddb252e2e45639373dd8bf5bfa84c2022-12-22T02:23:47ZengIWA PublishingWater Supply1606-97491607-07982022-04-012244159417510.2166/ws.2022.042042Exploring water-level fluctuation amplitude in an approach channel under the regulation of a dual cascade hydro-plant in the dry seasonZhiyong Wan0Yun Li1Jianfeng An2Xiaogang Wang3Long Cheng4Yipeng Liao5 School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China Lower Changjiang River Bureau of Hydrology and Water Resources Survey, Changjiang Water Resources Commission, Nanjing 210011, China State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China Water-level fluctuation is a crucially important hydraulic factor to meet the safety of ship navigation. Due to the uncertainty and evolution of the maximum amplitude of water-level variation in the approach channel, the river reach between two dams located along the Yangtze River in China is selected as a study area and the impact of various operating conditions of the cascade hydro-plant on the maximum amplitude of water-level variation at typical sites is revealed combining the orthogonal test method and a hydrodynamic model. In addition, the critical threshold for the water-level variation at the lower lock head of the ship lift is explored using maximum entropy method. Results demonstrate that flow variation and regulation time are the most prominent factors affecting water-level fluctuation at the lower lock head of the ship lift, and the existing standard (0.5 m within 1 h and 0.3 m within 30 min) for controlling the maximum variation in water level at the lower lock head of the ship lift is reasonable and more safety oriented. This study provides a novel perspective to understand the response of water-level fluctuation to the stochasticity of operating conditions for the cascade hydropower stations. HIGHLIGHTS A one-dimensional hydrodynamic model was developed for validating the water-level fluctuation in the approach channel based on a physics model test.; Using orthogonal array design method to address the intricate scenarios from the dual cascade hydropower stations.; Using maximum entropy method (MEM) to examine the maximum water-level variation under the operation of large-scale cascade hydropower stations.;http://ws.iwaponline.com/content/22/4/4159approach channelhydropower stationmaximum entropy methodorthogonal experiment methodship liftwater-level fluctuation |
| spellingShingle | Zhiyong Wan Yun Li Jianfeng An Xiaogang Wang Long Cheng Yipeng Liao Exploring water-level fluctuation amplitude in an approach channel under the regulation of a dual cascade hydro-plant in the dry season Water Supply approach channel hydropower station maximum entropy method orthogonal experiment method ship lift water-level fluctuation |
| title | Exploring water-level fluctuation amplitude in an approach channel under the regulation of a dual cascade hydro-plant in the dry season |
| title_full | Exploring water-level fluctuation amplitude in an approach channel under the regulation of a dual cascade hydro-plant in the dry season |
| title_fullStr | Exploring water-level fluctuation amplitude in an approach channel under the regulation of a dual cascade hydro-plant in the dry season |
| title_full_unstemmed | Exploring water-level fluctuation amplitude in an approach channel under the regulation of a dual cascade hydro-plant in the dry season |
| title_short | Exploring water-level fluctuation amplitude in an approach channel under the regulation of a dual cascade hydro-plant in the dry season |
| title_sort | exploring water level fluctuation amplitude in an approach channel under the regulation of a dual cascade hydro plant in the dry season |
| topic | approach channel hydropower station maximum entropy method orthogonal experiment method ship lift water-level fluctuation |
| url | http://ws.iwaponline.com/content/22/4/4159 |
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