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research article

Non-proportional Repartition Rules Optimize Environmental Flows and Energy Production

Razurel, Pierre  
•
Gorla, Lorenzo  
•
Crouzy, Benoît  
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2016
Water Resources Management

In order to meet the growing demand for energy, the development of hydropower leads to an increase of the river exploitation by human activities. Thereby, water management has become a major issue in the energy transition. A better definition of the flow release rules is now required to improve the Minimal Flow Requirement (MFR) concept, which has long been used in spite of its environmental inconsistency. In this work, we present a class of non-proportional redistribution rules that broadens the spectrum of dynamic flow releases based on proportional redistribution for run-of-the-river power plants. We adapt the mathematical form of the Fermi-Dirac statistical distribution to engineer a novel class of redistribution functions. In particular, such functions are used to define the fraction of water allocated to the environment depending on the inflow at the intake. The theoretical background as well as the economic interpretation is presented, and the ability to generate variable flow releases carefully discussed. MFR, proportional and non-proportional distribution policies are then applied to a real case study and their respective economic and environmental efficiencies quantitatively compared. We show that non-proportional distribution policies allow for operating conditions actually close to the Pareto frontier, which improve both efficiencies with respect to those obtained from some traditional MFR and proportional policies.

  • Details
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Type
research article
DOI
10.1007/s11269-015-1156-y
Web of Science ID

WOS:000367856800013

Author(s)
Razurel, Pierre  
Gorla, Lorenzo  
Crouzy, Benoît  
Perona, Paolo  
Date Issued

2016

Publisher

Springer

Published in
Water Resources Management
Volume

30

Issue

1

Start page

207

End page

223

Subjects

Dynamic environmental flows

•

River regulation

•

Optimal water allocation

•

Sustainable water management

•

Flow regimes

•

Small hydropower

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
AHEAD  
Available on Infoscience
February 16, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/123800
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