Noncontact operation-state monitoring technology based on magnetic-field sensing for overhead high-voltage transmission lines

Xu Sun, Qi Huang, Yunhe Hou, Lijun Jiang, Philip W.T. Pong

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

This paper proposed a novel noncontact technology of operation-state monitoring based on magnetic-field sensing for high-voltage transmission lines, which can simultaneously measure both electrical and spatial parameters in real time. This technology was derived from research on the magnetic-field distribution at the ground level when the transmission lines operate in different states, including sagging, galloping, and current imbalance. Two typical models of high-voltage three-phase transmission lines were simulated, and the resulting magnetic fields were calculated. The correlation between the magnetic-field variations and the operation states were analyzed. Based on such correlation, a source reconstruction method was developed to reconstruct the spatial and electrical parameters from the magnetic field emanated by the overhead transmission lines. The reconstruction results for the 500-kV and 220-kV transmission lines verify the feasibility and practicality of this novel noncontact transmission-line monitoring technology based on magnetic-field sensing.

Original languageEnglish (US)
Article number6576920
Pages (from-to)2145-2153
Number of pages9
JournalIEEE Transactions on Power Delivery
Volume28
Issue number4
DOIs
StatePublished - 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Keywords

  • Magnetic-field sensing
  • magnetoresistive sensor
  • noncontact monitoring
  • overhead transmission line
  • smart grid

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