Series LC DC Circuit Breaker

Dragan Jovcic

doi:10.1049/hve.2019.0003

Series LC DC Circuit Breaker

Dragan Jovcic^* (Corresponding Author)

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

40 Downloads (Pure)

Abstract

The article proposes a mechanical DC CB based on a series LC circuit. It requires two switches (a fast disconnector, and an AC Circuit breaker), an inductor and a capacitor, and therefore the cost is expected to be low. A series LC circuit is analyzed and it is concluded that fault current will always have natural zero-current crossings which enable use of simple AC CBs. The current commutation into a capacitor is investigated since this is important for successful operation. A number of analytical conditions are derived for the voltage stress across disconnector contacts which enable arc-less contact opening. Experimental results on a 900 V laboratory prototype LC DC CB illustrate successful DC fault clearing, with commutation of 130 A and peak DC current of 190 A.
A detailed PSCAD model for 320 kV LC DC CB is developed and DC fault clearing is evaluated in order to understand the possible benefit for HVDC applications. Further comparisons with the commercialized hybrid DC CB and mechanical DC CB on 320 kV system illustrate some benefits in terms of performance and simplicity. The mechanical LC DC CB operates very fast because of early capacitor insertion, and this results in low peak current and energy dissipation.

Original language	English
Pages (from-to)	130-137
Number of pages	8
Journal	High Voltage
Volume	4
Issue number	2
Early online date	3 Apr 2019
DOIs	https://doi.org/10.1049/hve.2019.0003
Publication status	Published - Jun 2019

Bibliographical note

This work was supported by the Europend Udiod’s Horizon 2020 research and innovation program under grant No. 691714.
The author is thankful to Mr R. Osborne from University of Aberdeen for help with the experimental studies

Keywords

DC power transmission
HVDC power transmission
power systems
inductor
fault currents
fast disconnector
peak DC current
natural zero-current crossings
0 A
LC circuits
mechanical DC circuit breaker
current 130
circuit breakers
current 190
low peak current
series LC DC circuit breaker
current commutation
simple AC CB
commercialised hybrid DC CB
power capacitors
disconnector contacts
fault current
MECHANISM
0 V
voltage 320
POWER
laboratory prototype LC DC CB
0 kV
DC fault clearing
mechanical DC CB
capacitor
voltage 900
power inductors
energy dissipation
high-voltage direct current applications
mechanical LC DC CB
AC circuit breaker

Access to Document

10.1049/hve.2019.0003Licence: CC BY-NC-ND

Series LC DC Circuit Breaker
This is an open access article published by the IET and CEPRI under the Creative Commons Attribution-NonCommercial-NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/)
Final published version, 3.97 MBLicence: CC BY-NC-ND

Cite this

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title = "Series LC DC Circuit Breaker",

abstract = "The article proposes a mechanical DC CB based on a series LC circuit. It requires two switches (a fast disconnector, and an AC Circuit breaker), an inductor and a capacitor, and therefore the cost is expected to be low. A series LC circuit is analyzed and it is concluded that fault current will always have natural zero-current crossings which enable use of simple AC CBs. The current commutation into a capacitor is investigated since this is important for successful operation. A number of analytical conditions are derived for the voltage stress across disconnector contacts which enable arc-less contact opening. Experimental results on a 900 V laboratory prototype LC DC CB illustrate successful DC fault clearing, with commutation of 130 A and peak DC current of 190 A.A detailed PSCAD model for 320 kV LC DC CB is developed and DC fault clearing is evaluated in order to understand the possible benefit for HVDC applications. Further comparisons with the commercialized hybrid DC CB and mechanical DC CB on 320 kV system illustrate some benefits in terms of performance and simplicity. The mechanical LC DC CB operates very fast because of early capacitor insertion, and this results in low peak current and energy dissipation.",

keywords = "DC power transmission, HVDC power transmission, power systems, inductor, fault currents, fast disconnector, peak DC current, natural zero-current crossings, 0 A, LC circuits, mechanical DC circuit breaker, current 130, circuit breakers, current 190, low peak current, series LC DC circuit breaker, current commutation, simple AC CB, commercialised hybrid DC CB, power capacitors, disconnector contacts, fault current, MECHANISM, 0 V, voltage 320, POWER, laboratory prototype LC DC CB, 0 kV, DC fault clearing, mechanical DC CB, capacitor, voltage 900, power inductors, energy dissipation, high-voltage direct current applications, mechanical LC DC CB, AC circuit breaker",

author = "Dragan Jovcic",

note = "This work was supported by the Europend Udiod{\textquoteright}s Horizon 2020 research and innovation program under grant No. 691714. The author is thankful to Mr R. Osborne from University of Aberdeen for help with the experimental studies",

year = "2019",

month = jun,

doi = "10.1049/hve.2019.0003",

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N1 - This work was supported by the Europend Udiod’s Horizon 2020 research and innovation program under grant No. 691714. The author is thankful to Mr R. Osborne from University of Aberdeen for help with the experimental studies

PY - 2019/6

Y1 - 2019/6

N2 - The article proposes a mechanical DC CB based on a series LC circuit. It requires two switches (a fast disconnector, and an AC Circuit breaker), an inductor and a capacitor, and therefore the cost is expected to be low. A series LC circuit is analyzed and it is concluded that fault current will always have natural zero-current crossings which enable use of simple AC CBs. The current commutation into a capacitor is investigated since this is important for successful operation. A number of analytical conditions are derived for the voltage stress across disconnector contacts which enable arc-less contact opening. Experimental results on a 900 V laboratory prototype LC DC CB illustrate successful DC fault clearing, with commutation of 130 A and peak DC current of 190 A.A detailed PSCAD model for 320 kV LC DC CB is developed and DC fault clearing is evaluated in order to understand the possible benefit for HVDC applications. Further comparisons with the commercialized hybrid DC CB and mechanical DC CB on 320 kV system illustrate some benefits in terms of performance and simplicity. The mechanical LC DC CB operates very fast because of early capacitor insertion, and this results in low peak current and energy dissipation.

AB - The article proposes a mechanical DC CB based on a series LC circuit. It requires two switches (a fast disconnector, and an AC Circuit breaker), an inductor and a capacitor, and therefore the cost is expected to be low. A series LC circuit is analyzed and it is concluded that fault current will always have natural zero-current crossings which enable use of simple AC CBs. The current commutation into a capacitor is investigated since this is important for successful operation. A number of analytical conditions are derived for the voltage stress across disconnector contacts which enable arc-less contact opening. Experimental results on a 900 V laboratory prototype LC DC CB illustrate successful DC fault clearing, with commutation of 130 A and peak DC current of 190 A.A detailed PSCAD model for 320 kV LC DC CB is developed and DC fault clearing is evaluated in order to understand the possible benefit for HVDC applications. Further comparisons with the commercialized hybrid DC CB and mechanical DC CB on 320 kV system illustrate some benefits in terms of performance and simplicity. The mechanical LC DC CB operates very fast because of early capacitor insertion, and this results in low peak current and energy dissipation.

KW - DC power transmission

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KW - mechanical DC circuit breaker

KW - current 130

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KW - current 190

KW - low peak current

KW - series LC DC circuit breaker

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KW - power inductors

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KW - high-voltage direct current applications

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KW - AC circuit breaker

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DO - 10.1049/hve.2019.0003

M3 - Article

SN - 2397-7264

VL - 4

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EP - 137

JO - High Voltage

JF - High Voltage

IS - 2

ER -

Series LC DC Circuit Breaker

Abstract

Bibliographical note

Keywords

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Dragan Jovcic

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Series LC DC Circuit Breaker

Abstract

Bibliographical note

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Dragan Jovcic

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