Wave resource characterization through in-situ measurement followed by artificial neural networks' modeling

RENEWABLE ENERGY

卷:115

Article

Sanchez, Antonio Santos¹  Rodrigues, Diego Arruda¹  Fontes, Raony Maia¹  Martins, Marcio Fernandes¹  Kalid, Ricardo de Araujo²  Torres, Ednildo Andrade¹ 

[1] Univ Fed Bahia, Salvador, BA, Brazil

[2] Fed Univ South Bahia, Itabuna, BA, Brazil

关键词: Wave energy;    Wave monitoring;    Artificial neural network;    Resource assessment;   

DOI  :  10.1016/j.renene.2017.09.032

来源: Elsevier

【 摘 要 】

This research presents a mathematical model that uses artificial neural networks for the assessment of the wave energy potential of sites, based on data recorded by wave monitoring instrumentation. The model was implemented and validated in two different sites. The first one had a dataset from an upward looking acoustic Doppler current profiler that recorded a hindcast during 21/2 years. The second consisted in data from a buoy using motion sensors that recorded continuously during 23 years. For this second site, the performance of the neural network model was compared to that of the Nearshore Wave Prediction System (NWPS), which combines SWAN, Wavewatch III and other numerical models. For the 21/2 years' hindcast, the error of the neural network was significant which suggests a better use for filling missing gaps within datasets than for resource assessment. Meanwhile the performance of the neural network trained with the 23 years' hindcast was satisfactory; better than the NWPS in terms of relative bias but worse in terms of scatter index. Therefore it is concluded that neural networks can make an optimal use of the data produced by wave monitoring instrumentation and are useful to characterize the wave energy resource of a coastal site. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

Free