Titel: A comparison study of harmonic emission measurements in four wind parks
Författare: Yang Kai, Math H. J. Bollen, Mats Wahlberg
Utgivare: Power and Energy Society General Meeting, 2011
Årtal: 2011
Ämnesord: harmonic current, grid, voltage
Rapport via IEEE Xplorer
Sammanfattning/Abstract:
This paper presents measurements of harmonic current emissions up till 2kHz from four different windparks in northern Sweden, all equipped with modern power-electronics converters. The measurement results are presented in different ways, including a method to quantify the impact on the grid and a method to show the variations in the spectrum with time. The results show that there exists different dominating harmonics in different windturbines and that the magnitudes of the individual frequency components vary strongly with time. Each turbine however shows a broadband component with superimposed narrowband components. The impact on the grid, with reference to permissible levels of voltage distortion, is biggest for the interharmonic components.