Power-frequency control of hydropower plants with long penstocks in isolated systems with wind generation

Martínez de Lucas, Guillermo and Sarasúa Moreno, José Ignacio and Sánchez Fernández, José Ángel and Wilhelmi Ayza, José-Román (2015). Power-frequency control of hydropower plants with long penstocks in isolated systems with wind generation. "Renewable Energy", v. 83 ; pp. 245-255. ISSN 0960-1481. https://doi.org/10.1016/j.renene.2015.04.032.

Description

Title: Power-frequency control of hydropower plants with long penstocks in isolated systems with wind generation
Author/s:
  • Martínez de Lucas, Guillermo
  • Sarasúa Moreno, José Ignacio
  • Sánchez Fernández, José Ángel
  • Wilhelmi Ayza, José-Román
Item Type: Article
Título de Revista/Publicación: Renewable Energy
Date: 2015
ISSN: 0960-1481
Volume: 83
Subjects:
Freetext Keywords: Wind-hydro systems; Long penstock; Governor tuning; Pole placement method
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

In this paper the power-frequency control of hydropower plants with long penstocks is addressed. In such configuration the effects of pressure waves cannot be neglected and therefore commonly used criteria for adjustment of PID governors would not be appropriate. A second-order Π model of the turbine-penstock based on a lumped parameter approach is considered. A correction factor is introduced in order to approximate the model frequency response to the continuous case in the frequency interval of interest. Using this model, several criteria are analysed for adjusting the PI governor of a hydropower plant operating in an isolated system. Practical criteria for adjusting the PI governor are given. The results are applied to a real case of a small island where the objective is to achieve a generation 100% renewable (wind and hydro). Frequency control is supposed to be provided exclusively by the hydropower plant. It is verified that the usual criterion for tuning the PI controller of isolated hydro plants gives poor results. However, with the new proposed adjustment, the time response is considerably improved

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainENE2012-32207UnspecifiedUnspecifiedOptimal operation and control of pumped-storage hydropower plants

More information

Item ID: 36011
DC Identifier: http://oa.upm.es/36011/
OAI Identifier: oai:oa.upm.es:36011
DOI: 10.1016/j.renene.2015.04.032
Official URL: http://www.sciencedirect.com/science/article/pii/S0960148115003122
Deposited by: Memoria Investigacion
Deposited on: 19 Jun 2015 14:52
Last Modified: 31 May 2019 14:53
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