Variations of supraharmonic emissions in low voltage networks

Loading...
Thumbnail Image
Paper number
55
Working Group Number
Conference name
CIRED 2019
Conference date
3-6 June 2019
Conference location
Madrid, Spain
Peer-reviewed
Yes
Short title
Convener
Authors
Rönnberg, Sarah , Luleå University of Technology, Sweden
Gil de Castro, Aurora, University of Cordoba, Spain
Espin Delgado, Angela, Luleå University of Technology, Sweden
Abstract
This paper describes and presents measurements of supraharmonic emission in low voltage grids in Europe, North America and Asia. One-minute average values for 2 kHz grouped components are given and a total supraharmonic distortion (TSHD) value is calculated for the frequency band 2 to 150 kHz. Statistical analyses are performed, investigating the site and time dependency of supraharmonic voltages. Results show that the average values are, with a 90% confidence within an interval of 0.09-0.56% of fundamental (FND) but higher values can occur. Based on analyses of these measurements some early conclusions can be drawn:Supraharmonic emission are present in low voltage gridsThe magnitudes and frequencies vary between sites and over timeThere is a daily pattern but also some randomness when supraharmonics appear
Table of content
Keywords
Publisher
AIM
Date
2019-06-03
Permanent link to this record
https://cired-repository.org/handle/20.500.12455/116
http://dx.doi.org/10.34890/234
ISSN
2032-9644
ISBN
978-2-9602415-0-1