Abstract
This paper presents a methodology to represent ocean wave power generation based on real data observation for significant wave height (SWH or H s ) and wave period (WP or T). This technique is based on a hybrid model, which considers Fourier series and stochastic differential equations, allowing a continuous time representation of the random changes in the parameters associated with wave power generation ( H s and T). The methodology is explained, including estimation methods and a validation procedure. The data series generated by the models erre used to create simulated wave power output applying a transformed matrix and a theoretical model. The results validate the utilization of this technique, when the objective is to obtain a robust dynamic representation of a random process, oriented to linear studies.
Highlights
The inclusion of wave energy in electrical power systems (EPS) is a current research topic at global level, due to its energy potential—the prospective world production has been theoretically estimated at more than 100,000 TWh per year [1]—and the increasing interest to include renewable energy supplies [2]
This paper proposes robust dynamic stochastic models of Hs and T, which allow representing wave power
Once the model was validated, the projections of present and future values of Hs and T must be done to apply the respective transformations to the series and obtain simulations of generated power
Summary
The inclusion of wave energy in electrical power systems (EPS) is a current research topic at global level, due to its energy potential—the prospective world production has been theoretically estimated at more than 100,000 TWh per year [1]—and the increasing interest to include renewable energy supplies [2]. Even though there is increased interest in this energy source, there still exists geographic zones with significant potential, which have not been intervened, for example, the case of Chile in South America [10], which has access to the sea in its whole continental territory. In all those implemented examples and in future projects, it is necessary to study before a real implementation, the effect of integrating wave energy into the grid, because this type of power induces random perturbations that can trigger damage effects in the system at operational level. Due to the Energies 2019, 12, 887; doi:10.3390/en12050887 www.mdpi.com/journal/energies
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