An operational model that analyzes the relationship between annual energy output and year-end stored energy of a reservoir system was developed and used for determining the optimal year-end water level of a multi-year regulating storage reservoir. The model accounts for the capacity benefit of a multi-annual storage plant and was validated using the case of the Longyangxia reservoir in the upper reaches of the Yellow River, China. The critical elements for determining the optimal year-end water level for multi-year regulating storage reservoirs were revealed through analysis of the impacts of runoff and year-start water level on year-end water level. Simulated operational results from the model were compared with practical operational results for the Longyangxia reservoir system from 1990–2012. A comparison shows that the operating mode for Longyangxia reservoir (after 2006) achieved significant improvement versus before 2006, in making the reservoir run at a higher water level and increasing benefits. In addition, our study indicates that the model can be effectively used for multi-year regulating storage reservoir operation.
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Research Article|
September 07 2015
Determining the optimal year-end water level of a multi-year regulating storage reservoir: a case study
Jinlong Wang;
1State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China
E-mail: xhuang2002@163.com
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Weibin Huang;
Weibin Huang
1State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China
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Guangwen Ma;
Guangwen Ma
1State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China
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Yuhua Wang
Yuhua Wang
2China Three Gorges Corporation, Yichang 443000, China
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Water Supply (2016) 16 (2): 284–294.
Article history
Received:
March 31 2015
Accepted:
August 25 2015
Citation
Jinlong Wang, Weibin Huang, Guangwen Ma, Yuhua Wang; Determining the optimal year-end water level of a multi-year regulating storage reservoir: a case study. Water Supply 1 April 2016; 16 (2): 284–294. doi: https://doi.org/10.2166/ws.2015.138
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