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Variations of supraharmonic emissions in low voltage networks
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-4004-0352
University of Cordoba, Spain.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0001-6074-8633
2019 (English)In: CIRED 2019 Conference, AIM , 2019, article id 5Conference paper, Published paper (Refereed)
Abstract [en]

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 grids

The magnitudes and frequencies vary between sites and over time

There is a daily pattern but also some randomness when supraharmonics appear.

Place, publisher, year, edition, pages
AIM , 2019. article id 5
Series
CIRED Conference Proceedings, ISSN 2032-9644
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electric Power Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-77979DOI: 10.34890/234OAI: oai:DiVA.org:ltu-77979DiVA, id: diva2:1412467
Conference
25th International Conference and Exhibition on Electricity Distribution (CIRED 2019), 3-6 June, 2019, Madrid, Spain
Note

ISBN för värdpublikation: 978-2-9602415-0-1

Available from: 2020-03-06 Created: 2020-03-06 Last updated: 2023-09-05Bibliographically approved

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Rönnberg, SarahEspin Delgado, Angela

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