Impact of optical instrument transformer characteristics on the performance of protective relays and power quality meters

Mladen Kezunovic, Levi Portillo, George Karady, Sadik Kucuksari

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

10 Scopus citations

Abstract

This paper evaluates the influence of optical instrument transformers (OIT) characteristics on the performance of protection and power quality metering Intelligent Electronic Devices (IED). Lab research and experience from field application have shown that instrument transformer characteristics may affect the performance of relays, revenue metering systems and power quality meters. Recently, optical voltage and current instrument transformers have become readily available. Optical transducers measure changes in properties of some materials as a result of the surrounding electrical or magnetic field instead of directly measuring currents and voltages. A quantitative relationship between this change and the current or voltage can be obtained. OIT provide several benefits for protection and metering applications: wider frequency bandwidth and better dynamic performance. A previous study has presented a methodology for assessing the influence of instrument transformer characteristics on relay performance. The methodology presented in this paper uses some of the aspects presented in the previous studies and defines criteria and procedure for evaluating the influence of OIT characteristics on the performance protective relays and power quality meters. OIT models obtained from laboratory testing of actual sensors have been used along with simulation environment to quantify the influence. Results of simulation are presented.

Original languageEnglish (US)
Title of host publication2006 IEEE PES Transmission and Distribution Conference and Exposition
Subtitle of host publicationLatin America, TDC'06
DOIs
StatePublished - Dec 1 2006
Event2006 IEEE PES Transmission and Distribution Conference and Exposition: Latin America, TDC'06 - Caracas, Venezuela, Bolivarian Republic of
Duration: Aug 15 2006Aug 18 2006

Publication series

Name2006 IEEE PES Transmission and Distribution Conference and Exposition: Latin America, TDC'06

Other

Other2006 IEEE PES Transmission and Distribution Conference and Exposition: Latin America, TDC'06
CountryVenezuela, Bolivarian Republic of
CityCaracas
Period8/15/068/18/06

Keywords

  • Instrument transformer
  • meter
  • model
  • optical
  • performance
  • power quality
  • protection
  • relay

ASJC Scopus subject areas

  • Energy Engineering and Power Technology

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    Kezunovic, M., Portillo, L., Karady, G., & Kucuksari, S. (2006). Impact of optical instrument transformer characteristics on the performance of protective relays and power quality meters. In 2006 IEEE PES Transmission and Distribution Conference and Exposition: Latin America, TDC'06 [4104528] (2006 IEEE PES Transmission and Distribution Conference and Exposition: Latin America, TDC'06). https://doi.org/10.1109/TDCLA.2006.311597