Stochastic modelling of wind velocities time series

被引:50
作者
Castino, F
Festa, R
Ratto, CF
机构
[1] Univ Genoa, Dept Struct & Geotech Engn, I-16145 Genoa, Italy
[2] Univ Genoa, Dept Phys, INFM, I-16146 Genoa, Italy
关键词
wind velocity; stochastic modelling; time series;
D O I
10.1016/S0167-6105(98)00012-9
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The knowledge of wind speed time series is necessary to evaluate, for instance, the power values produced by wind turbines, in order to investigate load matching and storage requirements. The usual description of the stochastic properties of wind speed independent of its direction is here criticized and an approach based on the coupled analysis of both wind speed and direction is proposed. Two stochastic models simulating three hourly wind speed and direction time series are investigated; encouraging results are obtained with a scheme combining a Markov chain model and a Discrete Auto Regressive Model of order 2 (DAR(2)). A comparison with 42 years of wind data measured at Brindisi airport, Italy, is made, showing that this compound model is able to generate direction and speed sequences that fairly agree, in the statistical sense, with the observed time series at the considered site. (C) 1998 Elsevier Science Ltd. All rights reserved.
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页码:141 / 151
页数:11
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