Open AccessOptimum contributions of hydropower reservoirs to the minimum flow of Vu Gia – Thu Bon river basin
Author(s) -
To Viet Thang,
Nguyen Thi Thu Nga,
Ngo Le Long
Publication year - 2020
Publication title -
water practice and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 15
ISSN - 1751-231X
DOI - 10.2166/wpt.2020.082
Subject(s) - hydropower , tributary , downstream (manufacturing) , upstream (networking) , hydrology (agriculture) , structural basin , environmental science , drainage basin , flow (mathematics) , water resource management , computer science , geology , geography , mathematics , engineering , geomorphology , cartography , operations management , geotechnical engineering , computer network , electrical engineering , geometry
Upstream hydropower development has a great impact on downstream flows. According to the Regulation of Multi-reservoir Operation in Vu Gia – Thu Bon River Basin (Regulation 15371), four large-scale upstream reservoirs must discharge certain flow during the dry season to increase water levels at downstream hydrological stations named Ai Nghia and Giao Thuy. These stations are used as the control points for the downstream water supply. An optimizing-simulation based model was developed that both maximizes total electricity production and ensures minimum flow downstream as required. A thousand combinations of the reservoir inflows were generated by Monte Carlo simulation, considering the correlation between tributaries. Then, the Scatter search algorithm available in the Optquest module of Crystal Ball was used to find the optimal release from the reservoirs. The results show that the current Regulation 1537 can be improved for more efficient water resources management.
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