Preliminary evaluation of optically-interrogated Rogowski coils: compliance with power system protection classes

Grzegorz Fusiek, Philip Orr, Pawel Niewczas, Adam Dysko, Campbell Booth, Fumio Kawano, Phil Beaumont, Gareth Baber, Tomonori Nishida

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In this paper we report on recent investigations into the performance of an optically-interrogated Rogowski coil designed for power system protection applications. Preliminary evaluation of the pre-prototype device shows that the amplitude and phase errors at its rated current of 1 kA and at rated frequency are around 0.1 % and 0.1° respectively. Based on the experimental results it can be concluded that the proposed approach of Rogowski coils monitored passively by distributed optical sensors has the potential to ensure conformance with the 5P protection and 0.5 standard classes specified by IEC 60044-8, while introducing a host of benefits that result from the passive and dielectric nature of the interrogation technique.
Original languageEnglish
Number of pages6
Publication statusAccepted/In press - 2014
Event12th International Conference on Developments in Power System Protection (DPSP 2014) - Copenhagen, Denmark
Duration: 30 Jun 2014 → …


Conference12th International Conference on Developments in Power System Protection (DPSP 2014)
Period30/06/14 → …


  • power system protection
  • Rogowski coil
  • optical sensor
  • piezoelectric transducer
  • fibre Bragg grating

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