Propagation of Harmonics in Electrical Grids: A Review of Selected Issues

Filipe Miguel Faria da Silva, Chengxi Liu, Kaleb Christensen, Chris Hansen, Troels Jakobsen, Mads Jensen, Kristian Lund, Jakob Poulsen, Eli Maria Stenseth, Mathilde Sørensen, Morten Vadstrup

Research output: Contribution to journalJournal articleResearchpeer-review

2 Citations (Scopus)
102 Downloads (Pure)

Abstract

Recent years saw increasing of harmonic distortion at transmission grids caused partly by a growing system undergrounding, leading to resonances at lower frequencies. Presently, the estimation of the harmonic distortion through simulations after significant grid changes is not sufficiently accurate and the understanding of harmonics propagation is a topic under research. This hinders grid development by system operators, as it is not possible to assess fully the impact of new lines.
This paper presents and analyses four harmonic-related phenomena: 1-Impact of line asymmetry in long HVAC cables; 2-Harmonic peak voltage/current along a line; 3-Harmonic propagation between voltage levels; 4-Fillter location. The paper summarizes the root causes and consequences of each phenomenon, together with tools and recommendations that can ease the assessment of harmonic propagation.
Original languageEnglish
JournalElectrical Engineering
Volume104
Issue number5
Pages (from-to)2819-2826
Number of pages8
ISSN0948-7921
DOIs
Publication statusPublished - Oct 2022

Keywords

  • Harmonic propagation
  • Harmonics
  • Line asymmetry
  • Passive filters

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