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Derivation of Flow Duration Curves to Estimate Hydropower Generation Potential in Data-Scarce Regions

Reichl, Fabian and Hack, Jochen (2017):
Derivation of Flow Duration Curves to Estimate Hydropower Generation Potential in Data-Scarce Regions.
In: Water, MDPI, p. 572, 9, (8), ISSN 2073-4441, DOI: 10.3390/w9080572, [Online-Edition: https://doi.org/10.3390/w9080572],
[Article]

Abstract

Small-scale hydropower is a robust and reliable form of sustainable energy supply in remote areas. On the one hand, the potential for hydropower generation depends on the specific climate in a given place, and precipitation above all. On the other hand, such potential also depends on the catchment’s characteristics, e.g., topography, land use, and soils. In the absence of discharge measurements, the available river flow for hydropower production can be estimated in the form of a flow duration curve based on these variables. In this study, the lumped rainfall-runoff method by Crawford and Thurin (1981) was modified to calculate a flow duration curve with a daily time step for an ungauged catchment in Nicaragua. Satisfactory results could be obtained by calibrating the method with the aid of a few discharge measurements. Best results were obtained with a parameter set for groundwater flow and recharge to groundwater from excess soil moisture of 0.014 and 0.6, respectively. Considering the climate and catchment characteristics of the study site, this parameterization can be physically reasoned.

Item Type: Article
Erschienen: 2017
Creators: Reichl, Fabian and Hack, Jochen
Title: Derivation of Flow Duration Curves to Estimate Hydropower Generation Potential in Data-Scarce Regions
Language: English
Abstract:

Small-scale hydropower is a robust and reliable form of sustainable energy supply in remote areas. On the one hand, the potential for hydropower generation depends on the specific climate in a given place, and precipitation above all. On the other hand, such potential also depends on the catchment’s characteristics, e.g., topography, land use, and soils. In the absence of discharge measurements, the available river flow for hydropower production can be estimated in the form of a flow duration curve based on these variables. In this study, the lumped rainfall-runoff method by Crawford and Thurin (1981) was modified to calculate a flow duration curve with a daily time step for an ungauged catchment in Nicaragua. Satisfactory results could be obtained by calibrating the method with the aid of a few discharge measurements. Best results were obtained with a parameter set for groundwater flow and recharge to groundwater from excess soil moisture of 0.014 and 0.6, respectively. Considering the climate and catchment characteristics of the study site, this parameterization can be physically reasoned.

Journal or Publication Title: Water
Volume: 9
Number: 8
Publisher: MDPI
Uncontrolled Keywords: daily time steps; flow duration curve; lumped rainfall-runoff method; micro-hydropower; Nicaragua; ungauged catchments
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Earth Science > Ecological Engineering
13 Department of Civil and Environmental Engineering Sciences
13 Department of Civil and Environmental Engineering Sciences > Institute of Hydraulic and Water Resources Engineering
13 Department of Civil and Environmental Engineering Sciences > Institute of Hydraulic and Water Resources Engineering > Engineering Hydrology and Water Management
Date Deposited: 29 Oct 2017 20:55
DOI: 10.3390/w9080572
Official URL: https://doi.org/10.3390/w9080572
URN: urn:nbn:de:tuda-tuprints-69186
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