Acciona Energia, S.a.

Daniel Rabal Echeverria

Luis Marroyo Palomo

Eugenio Guelbenzu Michelena

Christopher Walti

Asun Padros Razquin

Javier Marcos Alvarez

Miguel Garcia Solano

Javier Marcos Álvarez

María Asunción Padros Razquin

David Cuesta Lerín

Iñigo Berazaluce Minondo

Iñigo De La Parra Laita

The present invention is a method for the control of power ramp-rates minimizing energy storage requirements in intermittent power generation plants, such as for example a photovoltaic solar plant, which minimizes the energy storage requirements approximately halving the size of storage systems necessary to comply with a maximum allowable ramp-rate given by a grid code regulation regarding the state of the art, reducing thus investment costs in the plant and/or carrying out a rationalized use of the energy storage system, in such a way that in order to achieve the same maximum fluctuation ramp, a minor use is done of the energy storage system, minimizing the losses and extending its working life, and therefore reducing the plant operational costs.

Method for the control of power ramp-rates minimizing power storage requirements in intermittent power generation plants

A process for simultaneously providing capacity sale services (e.g. frequency regulation or voltage regulation), energy sale services (energy transfer from off-peak hours to peak hours), and stabilization services of a renewable plant may be provided. The process includes determining the values of energy quantity to be produced by the plant during a near future time interval. The process may also include introducing the values of energy quantity, in the control unit. Generating an hourly program of energy supply to be provided by the energy accumulator unit to the network may also be performed, depending on the values of energy to be produced, which stabilizes the power supplied by the plant to the network. Furthermore, the frequency and the voltage of the network may be regulated as well as transfers the energy between off-peak hours and peak hours, or from hours with saturation of the network to hours without saturation.

Procedure for supply control and storage of power provided by a renewable energy generation plant

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Sarriguren, Spain

Daniel Rabal Echeverria