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Transient modeling of saturated core fault current limiters

Journal Article


Abstract


  • A saturated core fault current limiter (FCL) essentially

    utilizes the dynamic and nonlinear magnetic behavior of

    steel cores to operate as a variable reactor. However, the nonlinear

    characteristic of magnetic materials has made modeling this

    unique device a difficult task. Hence, experimental measurements

    and finite-element method (FEM) analysis are the most common

    techniques used to characterize the transient behavior of the

    device. Both of these techniques, while accurate, cannot be used

    to analyze the transient electrical behaviour of FCLs in complex

    power systems, particularly when investigating power system

    switchgear behavior during fault events. FEM-based FCL modelling,

    despite its usefulness as a design verification tool, cannot

    be easily coupled to all electromagnetic transient programs that

    are in use today. This paper presents two modeling approaches to

    represent the saturated core FCL in transient network simulators:

    1) the nonlinear reluctance model and 2) the nonlinear inductance

    model. Both models are implemented in PSCAD/EMTDC and are

    validated by experimental results of a single-phase prototype

    saturated core FCL, where excellent agreement between the

    experimental and the modelling approaches is achieved.

Publication Date


  • 2016

Citation


  • S. M. Gunawardana , P. A. Commins, J. W. Moscrop & S. Perera, "Transient modeling of saturated core fault current limiters," IEEE Transactions on Power Delivery, vol. 31, (5) pp. 2008-2017, 2016.

Scopus Eid


  • 2-s2.0-84990174396

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6177

Number Of Pages


  • 9

Start Page


  • 2008

End Page


  • 2017

Volume


  • 31

Issue


  • 5

Abstract


  • A saturated core fault current limiter (FCL) essentially

    utilizes the dynamic and nonlinear magnetic behavior of

    steel cores to operate as a variable reactor. However, the nonlinear

    characteristic of magnetic materials has made modeling this

    unique device a difficult task. Hence, experimental measurements

    and finite-element method (FEM) analysis are the most common

    techniques used to characterize the transient behavior of the

    device. Both of these techniques, while accurate, cannot be used

    to analyze the transient electrical behaviour of FCLs in complex

    power systems, particularly when investigating power system

    switchgear behavior during fault events. FEM-based FCL modelling,

    despite its usefulness as a design verification tool, cannot

    be easily coupled to all electromagnetic transient programs that

    are in use today. This paper presents two modeling approaches to

    represent the saturated core FCL in transient network simulators:

    1) the nonlinear reluctance model and 2) the nonlinear inductance

    model. Both models are implemented in PSCAD/EMTDC and are

    validated by experimental results of a single-phase prototype

    saturated core FCL, where excellent agreement between the

    experimental and the modelling approaches is achieved.

Publication Date


  • 2016

Citation


  • S. M. Gunawardana , P. A. Commins, J. W. Moscrop & S. Perera, "Transient modeling of saturated core fault current limiters," IEEE Transactions on Power Delivery, vol. 31, (5) pp. 2008-2017, 2016.

Scopus Eid


  • 2-s2.0-84990174396

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6177

Number Of Pages


  • 9

Start Page


  • 2008

End Page


  • 2017

Volume


  • 31

Issue


  • 5