IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) FULL PAPERS : THEME 2- HYDRO-ENVIRONMENT : OPERATIONAL CONSTRAINTS OF MINI-HIDROPOWER SCHEMES CONSIDERING BROWN TROUT HABITAT
OPERATIONAL CONSTRAINTS OF MINI-HIDROPOWER SCHEMES CONSIDERING BROWN TROUT HABITAT
Author : ISABEL PRAGANA , ISABEL BOAVIDA , RUI CORTES , ANTÓNIO PINHEIRO
Hydropeaking occurs due to hydropower plant operation, when high discharges are made at a daily regular basis during high electricity consumption periods. It severely affects the hydrologic regime and, consequently, the aquatic ecosystem. To mitigate this tendency, either structural or operational measures have been proposed. Usually, structural measures are selected over the others due to less economic impact on the electricity producer. Therefore, better understanding the impacts of operational measures over the economics of electricity production is paramount in order to select solutions that may address both interests. The present study investigates the effects of a mini-hydropower plant in the fish habitat of brown trout considering different operational scenarios. Thus, the computational model River2D was applied to the river reach immediately downstream of the Ermida hydropower plant in the Carvalhosa stream, to obtain the 2D hydrodynamic features of different discharges. To perform the habitat modelling with the Casimir Fish 2D, fuzzy sets and rules were developed for juvenile and adult life-stages of brown trout. The operational scenarios were developed considering the habitat availability results and the power production periods according to the el ectricity selling price. The influence of an hydropower plant operation on the habitat suitability, as well as the energy revenue losses related with the production scenarios were taken into consideration. Results from this study may help in assisting water managers to adapt hydropeaking regimes in order to reduce the ecological impact of hydropower production.
File Size : 702,169 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) FULL PAPERS
Article : THEME 2- HYDRO-ENVIRONMENT
Date Published : 18/04/2016
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