Zero-sequence current blocking device for two phase AC systems

Stefan Christian Polster; Dennis Albert; Herwig Renner; Robert Schürhuber; Clemens Obkircher; Georg Rader

doi:10.1109/UPEC.2019.8893601

Zero-sequence current blocking device for two phase AC systems

Stefan Christian Polster
, Dennis Albert
, Herwig Renner
, Robert Schürhuber
, Clemens Obkircher
, Georg Rader

Institute of Electrical Power Systems (4320)

Research output: Contribution to conference › Paper › peer-review

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.

Original language	English
Number of pages	4
DOIs	https://doi.org/10.1109/UPEC.2019.8893601
Publication status	Published - 3 Sept 2019
Event	54th International Universities Power Engineering Conference - Bucharest, Romania Duration: 3 Sept 2019 → 6 Sept 2019 http://upec2019.com/

Conference

Conference	54th International Universities Power Engineering Conference
Abbreviated title	UPEC 2019
Country/Territory	Romania
City	Bucharest
Period	3/09/19 → 6/09/19
Internet address	http://upec2019.com/

Keywords

current limiters
fault currents
power systems
power transmission
transformers

Access to Document

10.1109/UPEC.2019.8893601

1 Finished

Nullstromsperre - Zero-sequence-current-blocking
Schürhuber, R. (Project manager on research unit), Albert, D. (Attendee / Assistant) & Polster, S. C. (Attendee / Assistant)
1/04/19 → 30/09/19
Project: Research project

2 Talk at conference or symposium

Transformator Diagnose und Modellierung mittels DC Hysteresemessung
Albert, D. (Speaker) & Pirker, A. (Speaker)
23 Mar 2023
Activity: Talk or presentation › Talk at conference or symposium › Science to science
Zero-sequence current blocking device for two phase AC systems
Albert, D. (Speaker)
3 Sept 2019 → 6 Sept 2019
Activity: Talk or presentation › Talk at conference or symposium › Science to science

OVE-Energietechnik | Kategorie Dissertation
Albert, D. (Recipient), 18 Oct 2023
Prize: Prizes / Medals / Awards

1 Book
1 Doctoral Thesis

Analysis of Power Transformers under DC/GIC Bias
Albert, D., 11 Jan 2023, Graz: Verlag der Technischen Universität Graz. 315 p. (Monographic Series TU Graz, Electrical Power Systems; vol. EPS 2)
Research output: Book/Report › Book › peer-review

Open Access
Analysis of Power Transformers under DC/GIC Bias
Albert, D., 10 Oct 2022, 291 p.
Research output: Thesis › Doctoral Thesis

Cite this

@conference{550549fb5bcb468e8c01b0ac49b8c96e,

title = "Zero-sequence current blocking device for two phase AC systems",

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{\textregistered} 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.",

keywords = "current limiters, fault currents, power systems, power transmission, transformers",

author = "Polster, \{Stefan Christian\} and Dennis Albert and Herwig Renner and Robert Sch{\"u}rhuber and Clemens Obkircher and Georg Rader",

year = "2019",

month = sep,

day = "3",

doi = "10.1109/UPEC.2019.8893601",

language = "English",

note = "54th International Universities Power Engineering Conference , UPEC 2019 ; Conference date: 03-09-2019 Through 06-09-2019",

url = "http://upec2019.com/",

}

TY - CONF

T1 - Zero-sequence current blocking device for two phase AC systems

AU - Polster, Stefan Christian

AU - Albert, Dennis

AU - Renner, Herwig

AU - Schürhuber, Robert

AU - Obkircher, Clemens

AU - Rader, Georg

PY - 2019/9/3

Y1 - 2019/9/3

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.

KW - current limiters

KW - fault currents

KW - power systems

KW - power transmission

KW - transformers

U2 - 10.1109/UPEC.2019.8893601

DO - 10.1109/UPEC.2019.8893601

M3 - Paper

T2 - 54th International Universities Power Engineering Conference

Y2 - 3 September 2019 through 6 September 2019

ER -

Zero-sequence current blocking device for two phase AC systems

Abstract

Conference

Keywords

Access to Document

Fingerprint

Projects

Nullstromsperre - Zero-sequence-current-blocking

Activities

Transformator Diagnose und Modellierung mittels DC Hysteresemessung

Zero-sequence current blocking device for two phase AC systems

Prizes

OVE-Energietechnik | Kategorie Dissertation

Research output

Analysis of Power Transformers under DC/GIC Bias

Analysis of Power Transformers under DC/GIC Bias

Cite this