Non-contact electric-coupling-based and magnetic-field-sensing-assisted technique for monitoring voltage of overhead power transmission lines

Ke Zhu, Wing Kin Lee, Philip W.T. Pong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations

Abstract

Adopting non-contact electric coupling for voltage monitoring avoids electrical connection to high-voltage transmission lines, making installation of the sensing platforms easier and enabling wide-area deployment. However, coupled transformation matrix is difficult to determine in practice as the exact spatial positions of the transmission lines are typically unknown and dynamic. This problem can be overcome by integrating magnetic field sensing with stochastic optimization algorithm. In this technique, magnetic signals emanated from the overhead transmission lines are measured by magnetic sensor arrays to determine the coupling coefficients so that the high voltage of the transmission lines can be deduced from the induced voltage in the copper bars on the ground. This proposed technique can be potentially implemented with low-cost copper induction bars and magnetoresistive (MR) sensors. Thus sectional and wide-area deployment may become possible and Ferranti effect and travelling lightning waves can then be monitored. Its enhanced sensing ability over potential transformers (PTs) can largely improve transient-fault identification and save cost for transmission-network inspection.

Original languageEnglish (US)
Title of host publication2015 IEEE SENSORS - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479982028
DOIs
StatePublished - Dec 31 2015
Externally publishedYes
Event14th IEEE SENSORS - Busan, Korea, Republic of
Duration: Nov 1 2015Nov 4 2015

Publication series

Name2015 IEEE SENSORS - Proceedings

Conference

Conference14th IEEE SENSORS
Country/TerritoryKorea, Republic of
CityBusan
Period11/1/1511/4/15

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electronic, Optical and Magnetic Materials
  • Spectroscopy
  • Electrical and Electronic Engineering

Keywords

  • electric coupling
  • magnetic field sensing
  • overhead transmission line
  • voltage monitoring

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