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http://dx.doi.org/10.3741/JKWRA.2022.55.7.531

Evaluation of hydropower dam water supply capacity (III): development and application of drought operation rule for hydropower dams in Han river  

Jeong, Gimoon (Korea Rural Community Corporation, Rural Research Institute)
Kang, Doosun (Department of Civil Engineering, Kyung Hee University)
Kim, Taesoon (Hangang Hydro Power Site, Korea Hydro & Nuclear Power Co., LTD.)
Publication Information
Journal of Korea Water Resources Association / v.55, no.7, 2022 , pp. 531-543 More about this Journal
Abstract
Integrated water resources management (IWRM) has focused on efficient response to various water related disasters by climate change. In particular, more flexible usage of conventional water resources infrastructures is expected to provide an eco-friendly water management. Multi-purpose dams and water supply dams are well known as water management facilities for securing and supplying water in drought season. Recently, based on the report '2021 multi-purpose use of hydropower dams in Han river', contribution of hydropower dams on water resources management is becoming more significant beyond the traditional role of hydropower generation. In drought conditions, the dams control water supply depending on the pre-defined drought stages. In the case of multi-purpose dams, an operation standard during drought has been already prepared and applied; however, for the hydropower dams, specific standards are not fully prepared yet in South Korea. In this study, a method for calculation of standard water storage and discharge reduction of hydropower dams according to drought stage is newly proposed reflecting the characteristics of hydropower dams. The proposed method was applied to the hydropower dams in Han river, where six hydropower dams are located. A case study of the historical droughts occurred in 2014-2017 demonstrated that the proposed hydropower dam operation rule could improve the water supply stability under severe drought conditions compared to the conventional operations. In the future, the role of hydropower dams for water resources management is expected to become more important, and this study can be widely used for water supply planning such as drought response using hydropower dams.
Keywords
Climate change; Drought response; Hydropower dam; Operation rule;
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Times Cited By KSCI : 3  (Citation Analysis)
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