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Monthly Joint Operations for the Nakdong Multi-reservoir System in Korea
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- Authors
- Issue Date
- 2007-09
- Citation
- Water International, 32 (3), pp. 416-427
- Keywords
- Joint operations, multi-reservoir system ; sampling stochastic dynamic programming ; ensemble streamflow prediction ; SSARR rainfall runoff model ; STELLA simulation model ; Korea
- Abstract
- This study applies a state-of-art optimization technique, SSDP/ESP (Sampling Stochastic Dynamic Programming with Ensemble Streamflow Prediction), to derive a monthly joint operating policy for the Nakdong multi-reservoir system in Korea. A rainfall-runoff model, SSARR (Streamflow Synthesis And Reservoir Regulation), is linked to the SSDP/ESP model to provide ESP scenarios for runoff during the next month in the Nakdong River basin. The primary advantage of the SSDP/ESP is that it updates the derived operating policy as new ESP forecasts become available. Another SSDP model that employs historical runoff scenarios (SSDP/Hist) is also developed. The main difference between the two SSDP models is that SSDP/Hist is an off-line model whereas the SSDP/ESP is on-line. The developed operating policies are tested with a simulation model using an object-oriented simulation software, STELLA. The simulation results show that SSDP/ESP is superior to SSDP/Hist with respect to the water supply criterion, although both models perform similarly with respect to the hydroelectric energy production criterion.
- ISSN
- 1941-1707
- Language
- English
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