Dimensioning Methodology of an Energy Storage System Based on Supercapacitors for Grid Code Compliance of a Wave Power Plant

Gustavo Navarro, Marcos Blanco, Jorge Torres, Jorge Nájera, Álvaro Santiago, Miguel Santos-Herran, Dionisio Ramírez and Marcos Lafoz
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Gustavo Navarro: Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Government of Spain, 28040 Madrid, Spain
Marcos Blanco: Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Government of Spain, 28040 Madrid, Spain
Jorge Torres: Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Government of Spain, 28040 Madrid, Spain
Jorge Nájera: Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Government of Spain, 28040 Madrid, Spain
Álvaro Santiago: Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Government of Spain, 28040 Madrid, Spain
Miguel Santos-Herran: Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Government of Spain, 28040 Madrid, Spain
Dionisio Ramírez: Centro de Electrónica Industrial (CEI), Universidad Politécnica de Madrid, 28006 Madrid, Spain
Marcos Lafoz: Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Government of Spain, 28040 Madrid, Spain

Energies, 2021, vol. 14, issue 4, 1-20

Abstract: The aim of this paper is to present a methodology for dimensioning an energy storage system (ESS) to the generation data measured in an operating wave energy generation plant connected to the electric grid in the north of Spain. The selection criterion for the ESS is the compliance of the power injected into the grid with a specific active-power ramp-rate limit. Due to its electrical characteristics, supercapacitor (SC) technology is especially suitable for this application. The ESS dimensioning methodology is based on a mathematical model, which takes into account the power generation system, the chosen ramp-rate limit, the ESS efficiency maps and electrical characteristics. It allows one to evaluate the number of storage cabinets required to satisfy the needs described, considering a compromise between the number of units, which means cost, and the reliability of the storage system to ensure the grid codes compliance. Power and energy parameters for the ESS are obtained from the calculations and some tips regarding the most efficient operation of the SC cabinets, based on a stepped switching strategy, are also given. Finally, some conclusions about the technology selection will be updated after the detailed analysis accomplished.

Keywords: supercapacitor; energy storage; wave energy; dimensioning; efficiency; grid code; renewable energies (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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