Zero-sequence current blocking device for two phase AC systems

Publikation: KonferenzbeitragPaperForschungBegutachtung

Abstract

Resonantly grounded power systems require fault current limitation in order to meet current standards and to ensure personal safety. A current limiting transformer (CLT), based on an isolating transformer, is investigated here. The major advantages of a CLT, compared to an isolating transformer, are power derating, reduction of leakage reactance and thus reduced losses and reactive power demand during operation. MATLAB/Simulink® is used to investigate the electrical behavior of the CLT. Simulations of a phase-to-ground fault are made to proof the reduction of fault currents. Modelling the CLT in symmetric components demonstrates the blocking mechanism for the zero-sequence currents. In this context special attention has to be paid to resonant currents in resonantly grounded networks, when using the CLT.
Originalspracheenglisch
Seitenumfang4
DOIs
PublikationsstatusVeröffentlicht - 3 Sep 2019
Veranstaltung54th International Universities Power Engineering Conference - Bucharest, Rumänien
Dauer: 3 Sep 20196 Sep 2019
http://upec2019.com/

Konferenz

Konferenz54th International Universities Power Engineering Conference
KurztitelUPEC 2019
LandRumänien
OrtBucharest
Zeitraum3/09/196/09/19
Internetadresse

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Electric fault currents
Power transformers
Reactive power
MATLAB

Schlagwörter

    Dies zitieren

    Polster, S. C., Albert, D., Renner, H., Schürhuber, R., Obkircher, C., & Rader, G. (2019). Zero-sequence current blocking device for two phase AC systems. Beitrag in 54th International Universities Power Engineering Conference , Bucharest, Rumänien. https://doi.org/10.1109/UPEC.2019.8893601

    Zero-sequence current blocking device for two phase AC systems. / Polster, Stefan Christian; Albert, Dennis; Renner, Herwig; Schürhuber, Robert; Obkircher, Clemens; Rader, Georg.

    2019. Beitrag in 54th International Universities Power Engineering Conference , Bucharest, Rumänien.

    Publikation: KonferenzbeitragPaperForschungBegutachtung

    Polster SC, Albert D, Renner H, Schürhuber R, Obkircher C, Rader G. Zero-sequence current blocking device for two phase AC systems. 2019. Beitrag in 54th International Universities Power Engineering Conference , Bucharest, Rumänien. https://doi.org/10.1109/UPEC.2019.8893601
    Polster, Stefan Christian ; Albert, Dennis ; Renner, Herwig ; Schürhuber, Robert ; Obkircher, Clemens ; Rader, Georg. / Zero-sequence current blocking device for two phase AC systems. Beitrag in 54th International Universities Power Engineering Conference , Bucharest, Rumänien.4 S.
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    abstract = "Resonantly grounded power systems require fault current limitation in order to meet current standards and to ensure personal safety. A current limiting transformer (CLT), based on an isolating transformer, is investigated here. The major advantages of a CLT, compared to an isolating transformer, are power derating, reduction of leakage reactance and thus reduced losses and reactive power demand during operation. MATLAB/Simulink{\circledR} is used to investigate the electrical behavior of the CLT. Simulations of a phase-to-ground fault are made to proof the reduction of fault currents. Modelling the CLT in symmetric components demonstrates the blocking mechanism for the zero-sequence currents. In this context special attention has to be paid to resonant currents in resonantly grounded networks, when using the CLT.",
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    AU - Polster, Stefan Christian

    AU - Albert, Dennis

    AU - Renner, Herwig

    AU - Schürhuber, Robert

    AU - Obkircher, Clemens

    AU - Rader, Georg

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    N2 - Resonantly grounded power systems require fault current limitation in order to meet current standards and to ensure personal safety. A current limiting transformer (CLT), based on an isolating transformer, is investigated here. The major advantages of a CLT, compared to an isolating transformer, are power derating, reduction of leakage reactance and thus reduced losses and reactive power demand during operation. MATLAB/Simulink® is used to investigate the electrical behavior of the CLT. Simulations of a phase-to-ground fault are made to proof the reduction of fault currents. Modelling the CLT in symmetric components demonstrates the blocking mechanism for the zero-sequence currents. In this context special attention has to be paid to resonant currents in resonantly grounded networks, when using the CLT.

    AB - Resonantly grounded power systems require fault current limitation in order to meet current standards and to ensure personal safety. A current limiting transformer (CLT), based on an isolating transformer, is investigated here. The major advantages of a CLT, compared to an isolating transformer, are power derating, reduction of leakage reactance and thus reduced losses and reactive power demand during operation. MATLAB/Simulink® is used to investigate the electrical behavior of the CLT. Simulations of a phase-to-ground fault are made to proof the reduction of fault currents. Modelling the CLT in symmetric components demonstrates the blocking mechanism for the zero-sequence currents. In this context special attention has to be paid to resonant currents in resonantly grounded networks, when using the CLT.

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    KW - fault currents

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    KW - power transmission

    KW - transformers

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