Evaluation of the Fluid Model Approach for the Sizing of Energy Storage in Wave-Wind Energy Systems

Abstract

Abstract:The application of energy storage in offshore renewable generation systems allows managing the intrinsic uncertainty of the resources and improving the utilization factor of the electrical network. Optimal storage design algorithms generally have to evaluate the behavior of the whole system thousands times before converging to the optimal solution and the reliability of the results obviously depends on the quality of input data. On the other hand, the utilization of simplified storage models in the design stage can reduce the simulation time drastically, while still providing useful information. The goal of this paper is to evaluate the applicability of a methodology for sizing the energy storage system in a hybrid wind and wave farm, which is based on fluid models. The description and performance of this modeling approach will be introduced and compared to standard design procedures based on extensive simulations. Advantages and limitations of each approach will be underlined and the impact of input data quality will be discussed.

New Engineering Approach for the Development and Demonstration of a Multi-Purpose Platform for the Blue Growth Economy

“…Objectives of the control strategy are to smooth the power production whilst balancing the absorbed energy and stabilisation of floating platform to keep it operationally functional and under safe conditions. The BGF energy production control for the combined system exploits the R&D already developed ( [12], [13], [14], [15], [16]), and it is optimised by modelling different control strategies acting on both wind turbine and WECs. Outcomes are then compared in terms of power output smoothness and platform displacements, on the basis of site resources wind turbine & WEC devices characteristics.…”

Dimensioning methodology for energy storage devices and wave energy converters supplying isolated loads

“…According to the classification proposed in [15], the methodology proposed is focused on power reliability, in a similar way as [19, 20] (instead of cost reduction, a more suitable option for grid‐connected systems [7, 21]). In addition, it is set as a probabilistic approach [7, 15] by means of an appropriate model of the resource and the WEC, instead of a sequential simulation approach [22].…”

“…In addition, it is set as a probabilistic approach [7, 15] by means of an appropriate model of the resource and the WEC, instead of a sequential simulation approach [22]. In wave energy generation, the dimensioning methods are mainly focused on power quality for grid‐connected systems [7, 21, 23]. Some stand‐alone examples such as [24] do exist; however, the ESS is sized only in a short‐time horizon (drawing away the problematic seasonal patterns of waves).…”