Variations of supraharmonic emissions in low voltage networks

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CIRED 2019 - 55.pdf (1.08 MB)

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, LuleĂĄ 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

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Publisher

AIM

Date

2019-06-03

Published in

CIRED 2019 Conference

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