Survey of harmonic current unbalance in public low voltage networks

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Contributors

Abstract

The paper presents a survey of harmonic current unbalance in public low voltage networks based on measurements of 130 German grids. To ensure a representative set of sites, the selection is based on a classification schema that considers different consumer, generation and network configurations. New individual and aggregated harmonic unbalance indices, which have been recently introduced starting from a harmonic and interharmonic unbalance theory, are applied for the analysis. The results show that fundamental as well as harmonic currents have unbalances higher than 10% and the unbalance levels increase further with the harmonic order. Exceptional high current unbalance levels have been found in some networks with shopping centers and office buildings as unbalance issues have not been taken properly into account at the design stage. The analysis suggests that harmonic studies in public LV networks have to take into account harmonic current unbalances in order to obtain realistic results.

Details

Original languageEnglish
Title of host publication2016 17th International Conference on Harmonics and Quality of Power (ICHQP)
PublisherIEEE
Pages289-294
Number of pages6
ISBN (electronic)978-1-5090-3792-6
ISBN (print)978-1-5090-3793-3
Publication statusPublished - 19 Oct 2016
Peer-reviewedYes

Publication series

SeriesInternational Conference on Harmonics and Quality of Power
ISSN1540-6008

Conference

Title2016 17th International Conference on Harmonics and Quality of Power (ICHQP)
Duration16 - 19 October 2016
LocationBelo Horizonte, Brazil

External IDs

Scopus 85009516103
ORCID /0000-0002-7465-5750/work/142237855
ORCID /0000-0001-8439-7786/work/142244180

Keywords

Keywords

  • Harmonic analysis, Power system harmonics, Current measurement, Power measurement, IEC Standards, Voltage measurement, Time-domain analysis