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http://dx.doi.org/10.12652/Ksce.2022.42.6.0803

Development of Multi-Reservoir System Operation Rule Curves for Hydropower Maximization in the Nam Ngum River Basin of Lao PDR  

Lee, Hyun-Jae (Korea Engineering Consultants Corp.)
Jang, Woong-Chul (Yeongjin Engineering Co., LTD.)
Lee, Il-Ju (Korea Engineering Consultants Corp.)
Lee, Jin-Hee (Korea Environment Institute)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.42, no.6, 2022 , pp. 803-814 More about this Journal
Abstract
The Lao government is continuously developing hydro-power dams in addition to the existing eight power plants in the Nam Ngum River basin and is expanding the power capacity of the existing power plants to meet the expected increase in electricity demand. Accordingly, the Lao government has requested an update on the existing reservoir operating rule curve in order to run the power plants efficiently. To this end, this study reviewed the current independent operating system as well as the joint operating system in order to maximize the annual power generation produced by a power plant by using CSUDP, general-purpose dynamic programming (DP) software. The appropriate operating regulation curve forms (URC/LRC, MRC) were extracted from the DP results, and the annual power generations were simulated by inputting them as the basic operating data of the reservoir operation set of the HEC-ResSim program. By synthesizing the amount of the annual power generation simulated, the existing operation regulation curve, the operational performance, and the opinion of the field operator, the optimal reservoir operation regulation curves that maximize the annual power generation of the target power plant were developed. Results revealed that a system operating in conjunction with the reservoir produces about 2.5 % more power generation than an independent reservoir due to the synergistic effect of the connection.
Keywords
Reservoir operation; Rule curve; Dynamic programming; Hydro-power; Nam Ngum River;
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