Contactless Islanding Detection Method Using Electric Field Sensors

Kun-Long Chen, Yi Guo, Juncheng Wang, Xiangguo Yang*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review


An accurate and cost-effective islanding detection is in a great need for distributed generation (DG) integration. An onsite contactless islanding detection scheme is proposed in this article, based on a small number of tiny and portable electric field (EF) sensors. In contrast to the existing mainstream detection techniques, which are heavily depended on the instrument transformer measurement in substations, the proposed contactless scheme is able to be deployed on the ground below the overhead feeders, enabled by a compact EF sensor and the associated accurate frequency measurement algorithm. The effectiveness, robustness, efficiency, and security advantages of the proposed method are investigated and verified by the simulations using various feeder configurations. It is further supported by the laboratory experiments based on a scale-down overhead feeder testbed.
Original languageEnglish
Pages (from-to)1-13
Number of pages13
JournalIEEE Transactions on Instrumentation and Measurement
Early online date8 Dec 2020
Publication statusPublished - Dec 2020

User-Defined Keywords

  • Contactless measurement
  • Distributed generation (DG)
  • Islanding detection
  • Overhead line


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