Influence of the maximum flow ramping rates on the water value

Guisandez, Ignacio and Pérez Díaz, Juan Ignacio and Wilhelmi Ayza, José Román (2016). Influence of the maximum flow ramping rates on the water value. "Energy Procedia", v. 87 ; pp. 100-107. ISSN 1876-6102. https://doi.org/10.1016/j.egypro.2015.12.363.

Description

Title: Influence of the maximum flow ramping rates on the water value
Author/s:
  • Guisandez, Ignacio
  • Pérez Díaz, Juan Ignacio
  • Wilhelmi Ayza, José Román
Item Type: Article
Título de Revista/Publicación: Energy Procedia
Date: January 2016
ISSN: 1876-6102
Volume: 87
Subjects:
Freetext Keywords: Maximum ramping rates; Mixed integer linear programming; Stochastic dynamic programming; Water value
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Hidráulica, Energía y Medio Ambiente
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper presents a study on the influence of maximum ramping rates (ρ) on the water values of a real hydropower plant. For this purpose, a master-slave algorithm, based on stochastic dynamic programming (SDP) and mixed integer linear programming (MILP), is used. The master module, based on SDP, has a 1-year planning period with weekly time steps and considers 3 state variables: stored volume of water in the reservoir at the beginning of each week; weekly water inflow; and average weekly energy price. The slave module, based on MILP, has a 1-week planning period with hourly time steps and considers: maximum legal and minimum technical storage capacities; maximum and minimum technical stored volumes for power generation; maximum and minimum flows released through the hydro units, the bottom outlets and the spillways according to the stored volume; one different power-discharge piecewise linear non-concave curve, as a function of the initial and estimated final stored volumes; start-up and shut-down costs of the hydro units; wear and tear costs of the hydro units caused by power variations; hourly evaporation losses according to the stored volume; hourly water inflows and energy prices; and up and down ρ. The results indicate that the water values of the hydropower plant are very sensitive to the presence of ρ; especially during the months with low water inflows. Water values decrease quadratically when increasing ρ

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainCGL2009-14258MOCHCAUnspecifiedMetodología para la optimización de la operación de centrales hidroeléctricas con criterios ambientales

More information

Item ID: 42187
DC Identifier: http://oa.upm.es/42187/
OAI Identifier: oai:oa.upm.es:42187
DOI: 10.1016/j.egypro.2015.12.363
Official URL: http://www.sciencedirect.com/science/article/pii/S1876610215030520
Deposited by: Memoria Investigacion
Deposited on: 12 Jul 2016 14:09
Last Modified: 15 Mar 2019 14:27
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