A finite difference approach to despiking in-stationary velocity data - tested on a triple-lidar

被引:3
作者
Forsting, A. R. Meyer [1 ]
Troldborg, N. [1 ]
机构
[1] Tech Univ Denmark, Dept Wind Energy, DTU Wind Energy, Riso Campus, DK-4000 Roskilde, Denmark
来源
SCIENCE OF MAKING TORQUE FROM WIND (TORQUE 2016) | 2016年 / 753卷
关键词
D O I
10.1088/1742-6596/753/7/072017
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
A novel despiking method is presented for in-stationary wind lidar velocity measurements. A finite difference approach yields the upper and lower bounds for a valid velocity reading. The sole input to the algorithm is the velocity series and optionally a far-field reference to the temporal variation in the velocity. The new algorithm is benchmarked against common despiking algorithms using a dataset acquired by three synchronised lidars in the upstream area of a full-scale wind turbine rotor and an artificially created space-time series with controlled spike contamination. By accounting for variations in space and time, this approach yields improvements in spike detection for in-stationary lidar measurements of about 25% over other more established stationary methods. Furthermore it proofs to be robust even for large numbers of spikes.
引用
收藏
页数:9
相关论文
共 14 条
[1]  
Angelou N, 2015, UNITTE WP3 MC1 MEASU
[2]  
Angelou N, 2012, P 26 INT LAS RAD C
[3]  
[Anonymous], [No title captured]
[4]  
Donoho DL, 1994, J ATMOS SCI, V155, P377
[5]  
Forsting A.M., 2015, J PHYS C SERIES
[6]   The flow upstream of a row of aligned wind turbine rotors and its effect on power production [J].
Forsting, Alexander Raul Meyer ;
Troldborg, Niels ;
Gaunaa, Mac .
WIND ENERGY, 2017, 20 (01) :63-77
[7]   Despiking acoustic Doppler velocimeter data [J].
Goring, DG ;
Nikora, VI .
JOURNAL OF HYDRAULIC ENGINEERING-ASCE, 2002, 128 (01) :117-126
[8]  
Mikkelsen T K, 2015, NEW DANISH REMOTE SE
[9]  
Mori N., 2007, Journal of Engineering Mechanics
[10]   Characterization of wind velocities in the upstream induction zone of a wind turbine using scanning continuous-wave lidars [J].
Simley, Eric ;
Angelou, Nikolas ;
Mikkelsen, Torben ;
Sjoholm, Mikael ;
Mann, Jakob ;
Pao, Lucy Y. .
JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY, 2016, 8 (01)