Title :
The impact of harmonics calculation methods on power quality assessment in wind farms
Author :
Kocewiak, Lukasz Hubert ; Hjerrild, Jesper ; Bak, Claus Leth
Author_Institution :
DONG Energy Power A/S, Fredericia, Denmark
Abstract :
Different methods of calculating harmonics in measurements obtained from offshore wind farms are shown in this paper. Appropriate data processing methods are suggested for harmonics with different origin and nature. Enhancements of discrete Fourier transform application in order to reduce measurement data processing errors are proposed and compared with classical methods. Comparison of signal processing methods for harmonic studies is presented and application dependent on harmonics origin and nature recommended. Certain aspects related to magnitude and phase calculation in stationary measurement data are analysed and described. Qualitative indices of measurement data harmonic analysis in order to assess the calculation accuracy are suggested and used.
Keywords :
data analysis; discrete Fourier transforms; harmonic analysis; offshore installations; power supply quality; signal processing; wind power plants; data processing methods; discrete Fourier transform; harmonics calculation methods; measurement data harmonic analysis; measurement data processing error reduction; offshore wind farms; power quality assessment; qualitative indices; signal processing methods; stationary measurement data; Frequency measurement; Harmonic analysis; Power harmonic filters; Power quality; Time series analysis; harmonic assessment; harmonic calculation; offshore wind farms; stationary signal processing;
Conference_Titel :
Harmonics and Quality of Power (ICHQP), 2010 14th International Conference on
Conference_Location :
Bergamo
Print_ISBN :
978-1-4244-7244-4
Electronic_ISBN :
978-1-4244-7245-1
DOI :
10.1109/ICHQP.2010.5625468
