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Investigations of low- and high-frequency movements of wind power plants using a profile laser scanner

Schill, Florian and Eichhorn, Andreas (2016):
Investigations of low- and high-frequency movements of wind power plants using a profile laser scanner.
Vienna, In: 3rd Joint International Symposium on Deformation Monitoring (JISDM), Vienna, 30.03.-01.04.2016, [Online-Edition: http://www.fig.net/resources/proceedings/2016/2016_03_JISDM_...],
[Conference or Workshop Item]

Abstract

This paper examines the possibility of contactless monitoring of wind power plants with a 2D profile scanner. Before measuring real wind power plants the concept was tested under laborato-ry conditions. With simulated oscillations between 0.1 Hz and 10 Hz the qualification to detect move-ments of artificial structures with the measurement system was proven. The measurement campaign (still in progress) was carried out at two different wind power plants south of Darmstadt. The two wind power plants are quite contrary, they differ from each other in the following points: age, hub height, speed, power control and power output. The data acquisition and data handling is pre-sented together with problems and an outlook how to overcome them with the combination of profile scanning and an image assisted total station (IATS). The first analysis of the measured data was realized with the discrete Fourier transformation (DFT). In the following, the limitations of this method in this particularly application are shown and an alterna-tive is proposed with the discrete wavelet transfor-mation (DWT).

Item Type: Conference or Workshop Item
Erschienen: 2016
Creators: Schill, Florian and Eichhorn, Andreas
Title: Investigations of low- and high-frequency movements of wind power plants using a profile laser scanner
Language: German
Abstract:

This paper examines the possibility of contactless monitoring of wind power plants with a 2D profile scanner. Before measuring real wind power plants the concept was tested under laborato-ry conditions. With simulated oscillations between 0.1 Hz and 10 Hz the qualification to detect move-ments of artificial structures with the measurement system was proven. The measurement campaign (still in progress) was carried out at two different wind power plants south of Darmstadt. The two wind power plants are quite contrary, they differ from each other in the following points: age, hub height, speed, power control and power output. The data acquisition and data handling is pre-sented together with problems and an outlook how to overcome them with the combination of profile scanning and an image assisted total station (IATS). The first analysis of the measured data was realized with the discrete Fourier transformation (DFT). In the following, the limitations of this method in this particularly application are shown and an alterna-tive is proposed with the discrete wavelet transfor-mation (DWT).

Place of Publication: Vienna
Uncontrolled Keywords: Laser scanning, 2D, wind power plant, eigenfrequency, DFT, DWT, IATS
Divisions: 13 Department of Civil and Environmental Engineering Sciences
13 Department of Civil and Environmental Engineering Sciences > Institute of Geodesy
13 Department of Civil and Environmental Engineering Sciences > Institute of Geodesy > Geodetic Measuring Systems and Sensor Technology
Event Title: 3rd Joint International Symposium on Deformation Monitoring (JISDM)
Event Location: Vienna
Event Dates: 30.03.-01.04.2016
Date Deposited: 14 Dec 2018 12:12
Official URL: http://www.fig.net/resources/proceedings/2016/2016_03_JISDM_...
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