Measurement Uncertainty of Radiated Electromagnetic Emissions in In Situ Tests ofWind Energy Conversion Systems

authored by: Sebastian Koj, Axel Hoffmann, Heyno Garbe
Abstract: The electromagnetic (EM) emissions of wind energy conversion systems (WECS) are evaluated in situ. Results of in situ tests, however, are only valid for the examined equipment under test (EUT) and cannot be applied to series production as samples, as the measurement uncertainty for in situ environment is not characterized. Currently measurements must be performed on each WECS separately, this is associated with significant costs and time requirement to complete. Therefore, in this work, based on the standard procedure according to the <q>Guide to the Expression of Uncertainty</q> (GUM, 2008) the measurement uncertainty is characterized. From current normative situation obtained influences on the measurement uncertainty: wind velocity and undefined ground are evaluated. The influence of increased wind velocity on the measurement uncertainty is evaluated with an analytical approach making use of the dipole characteristic. A numerically evaluated model provides information about the expected uncertainty due to reflection on different textures and varying values of relative ground moisture. Using a classical reflection law based approach, the simulation results are validated. Thanks to the presented methods, it is possible to successfully characterize the measurement uncertainty of in situ measurements of WECS's EM emissions.
Organisation(s): Institute of Electrical Engineering and Measurement Technology
Type: Article
Journal: Advances in Radio Science
Volume: 16
Pages: 13-22
No. of pages: 10
ISSN: 1684-9965
Publication date: 04.09.2018
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Electrical and Electronic Engineering
Electronic version(s): https://doi.org/10.5194/ars-16-13-2018 (Access: Open)
https://doi.org/10.15488/4262 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{8fe342ce75614fb6831283460c25a243,
title = "Measurement Uncertainty of Radiated Electromagnetic Emissions in In Situ Tests ofWind Energy Conversion Systems",
abstract = "The electromagnetic (EM) emissions of wind energy conversion systems (WECS) are evaluated in situ. Results of in situ tests, however, are only valid for the examined equipment under test (EUT) and cannot be applied to series production as samples, as the measurement uncertainty for in situ environment is not characterized. Currently measurements must be performed on each WECS separately, this is associated with significant costs and time requirement to complete. Therefore, in this work, based on the standard procedure according to the Guide to the Expression of Uncertainty (GUM, 2008) the measurement uncertainty is characterized. From current normative situation obtained influences on the measurement uncertainty: wind velocity and undefined ground are evaluated. The influence of increased wind velocity on the measurement uncertainty is evaluated with an analytical approach making use of the dipole characteristic. A numerically evaluated model provides information about the expected uncertainty due to reflection on different textures and varying values of relative ground moisture. Using a classical reflection law based approach, the simulation results are validated. Thanks to the presented methods, it is possible to successfully characterize the measurement uncertainty of in situ measurements of WECS's EM emissions.",
author = "Sebastian Koj and Axel Hoffmann and Heyno Garbe",
note = "Funding Information: The publication of this article was funded by the open-access fund of Leibniz Universit{\"a}t Hannover.",
year = "2018",
month = sep,
day = "4",
doi = "10.5194/ars-16-13-2018",
language = "English",
volume = "16",
pages = "13--22",
journal = "Advances in Radio Science",
issn = "1684-9965",
publisher = "Copernicus",
}