Performance of Large-Scale Grounding Systems in Thermal Power Plants Against Lightning Strikes to Nearby Transmission Towers

Mohammad E.M. Rizk, Matti Lehtonen, Yoshihiro Baba, Sayed Abulanwar

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
102 Downloads (Pure)

Abstract

In spite of the contemporary interest in renewable power plants, thermal power plants are still inevitable. Various electric equipment and apparatus are grounded via a large-scale grounding system in thermal power plants. In this paper, the three-dimensional finite-difference time-domain method has been employed to study the performance of such a large-scale grounding system against a lightning strike to a nearby transmission tower. The study has emphasized how a nearby sea, which is utilized for cooling purposes in thermal power plants, influences the ground potential rise on the large-scale grounding system considering soil ionization. The results show that the distribution of the ground potential rise on the large-scale grounding system is quite dependent on the alignment of sea with the large-scale grounding system. In addition, the extent that soil ionization affects the ground potential rise is dependent on the distance between the struck tower and the large-scale grounding system.

Original languageEnglish
Article number8365887
Pages (from-to)400-408
Number of pages9
JournalIEEE Transactions on Electromagnetic Compatibility
Volume61
Issue number2
DOIs
Publication statusPublished - 1 Apr 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • Electrodes
  • Electromagnetic fields
  • Finite-difference time-domain (FDTD) method
  • Ground penetrating radar
  • Grounding
  • Grounding systems (GSs)
  • Ionization
  • Lightning
  • Lightning strikes
  • Power generation
  • Soil

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