Earth faults and related disturbances in distribution networks

Seppo Hänninen, Matti Lehtonen, T. Hakola

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Abstract

The characteristics of the earth faults and related disturbances, recorded in medium voltage overhead distribution networks during the years 1998-1999 are described.
Altogether 316 real cases were analysed. The use of subharmonic oscillation and harmonic distortion was investigated, as a means of anticipating faults. Arcing faults made up at least half of all the disturbances, and were especially predominant in the unearthed network. Fault resistances reached their minimum values near the beginning of the disturbances.
The maximum currents that allowed for autoextinction in the unearthed network were comparatively small.
Original languageEnglish
Pages (from-to)283-288
JournalIEE Proceedings: Generation, Transmission and Distribution
Volume149
Issue number3
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Keywords

  • electricity
  • electric power
  • power distribution
  • power distribution lines
  • distribution networks
  • power distribution networks
  • fault analysis

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