DC transmission grids with fault tolerant LCL VSC converters and mechanical DC circuit breakers

D Jovcic; M Hajian; L Zhang

doi:10.1049/cp.2012.1972

DC transmission grids with fault tolerant LCL VSC converters and mechanical DC circuit breakers

D Jovcic, M Hajian, L Zhang

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

7 Citations (Scopus)

Abstract

The introduction of HVDC light technology has been a significant step towards developing DC transmission grids. However, all voltage source converters (VSC) employed with HVDC are completely defenceless against DC faults, and significant further technical advances are required to achieve security and reliability levels that exist with AC grids. This paper proposes building DC grids using VSC converters based on LCL passive circuits that enable inherent regulation of DC fault currents. The DC grids with LCL AC/DC converters will not have high DC fault currents and do not require very fast DC fault isolation. The paper describes mechanical DC circuit breakers that can be used at the ends of each DC cable in similar manner and with similar protection systems as with AC transmission systems. The advantage and feasibility of this method in DC fault isolation is studied using a 1GW three terminal HVDC test system simulated on PSCAD platform.

Original language	English
Title of host publication	10th International Conference on AC and DC Power Transmission, ACDC 2012
Subtitle of host publication	IET Conference Publications 610
Publisher	Curran Associates
Pages	1-6
Number of pages	6
ISBN (Print)	978-1-84919-700-7
DOIs	https://doi.org/10.1049/cp.2012.1972
Publication status	Published - 4 Dec 2012
Event	10th International Conference on AC and DC Power Transmission, ACDC 2012 - Birmingham, United Kingdom Duration: 4 Dec 2012 → 6 Dec 2012

Conference

Conference	10th International Conference on AC and DC Power Transmission, ACDC 2012
Country/Territory	United Kingdom
City	Birmingham
Period	4/12/12 → 6/12/12

Keywords

HVDC
DC Grid
Power Flow
DC/DC Convertor
Semiconductor Power Switch

Access to Document

10.1049/cp.2012.1972Licence: Unspecified

Cite this

Jovcic, D, Hajian, M & Zhang, L 2012, DC transmission grids with fault tolerant LCL VSC converters and mechanical DC circuit breakers. in 10th International Conference on AC and DC Power Transmission, ACDC 2012: IET Conference Publications 610. Curran Associates, pp. 1-6, 10th International Conference on AC and DC Power Transmission, ACDC 2012, Birmingham, United Kingdom, 4/12/12. https://doi.org/10.1049/cp.2012.1972

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title = "DC transmission grids with fault tolerant LCL VSC converters and mechanical DC circuit breakers",

abstract = "The introduction of HVDC light technology has been a significant step towards developing DC transmission grids. However, all voltage source converters (VSC) employed with HVDC are completely defenceless against DC faults, and significant further technical advances are required to achieve security and reliability levels that exist with AC grids. This paper proposes building DC grids using VSC converters based on LCL passive circuits that enable inherent regulation of DC fault currents. The DC grids with LCL AC/DC converters will not have high DC fault currents and do not require very fast DC fault isolation. The paper describes mechanical DC circuit breakers that can be used at the ends of each DC cable in similar manner and with similar protection systems as with AC transmission systems. The advantage and feasibility of this method in DC fault isolation is studied using a 1GW three terminal HVDC test system simulated on PSCAD platform.",

keywords = "HVDC, DC Grid, Power Flow, DC/DC Convertor, Semiconductor Power Switch",

author = "D Jovcic and M Hajian and L Zhang",

note = "Acknowledgements The authors are thankful to EPSRC (Engineering and Physical Sciences Research Council UK) for the support of this research (grant no EP/H010262/1).; 10th International Conference on AC and DC Power Transmission, ACDC 2012 ; Conference date: 04-12-2012 Through 06-12-2012",

year = "2012",

month = dec,

day = "4",

doi = "10.1049/cp.2012.1972",

language = "English",

isbn = "978-1-84919-700-7",

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booktitle = "10th International Conference on AC and DC Power Transmission, ACDC 2012",

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TY - GEN

T1 - DC transmission grids with fault tolerant LCL VSC converters and mechanical DC circuit breakers

AU - Jovcic, D

AU - Hajian, M

AU - Zhang, L

N1 - Acknowledgements The authors are thankful to EPSRC (Engineering and Physical Sciences Research Council UK) for the support of this research (grant no EP/H010262/1).

PY - 2012/12/4

Y1 - 2012/12/4

N2 - The introduction of HVDC light technology has been a significant step towards developing DC transmission grids. However, all voltage source converters (VSC) employed with HVDC are completely defenceless against DC faults, and significant further technical advances are required to achieve security and reliability levels that exist with AC grids. This paper proposes building DC grids using VSC converters based on LCL passive circuits that enable inherent regulation of DC fault currents. The DC grids with LCL AC/DC converters will not have high DC fault currents and do not require very fast DC fault isolation. The paper describes mechanical DC circuit breakers that can be used at the ends of each DC cable in similar manner and with similar protection systems as with AC transmission systems. The advantage and feasibility of this method in DC fault isolation is studied using a 1GW three terminal HVDC test system simulated on PSCAD platform.

AB - The introduction of HVDC light technology has been a significant step towards developing DC transmission grids. However, all voltage source converters (VSC) employed with HVDC are completely defenceless against DC faults, and significant further technical advances are required to achieve security and reliability levels that exist with AC grids. This paper proposes building DC grids using VSC converters based on LCL passive circuits that enable inherent regulation of DC fault currents. The DC grids with LCL AC/DC converters will not have high DC fault currents and do not require very fast DC fault isolation. The paper describes mechanical DC circuit breakers that can be used at the ends of each DC cable in similar manner and with similar protection systems as with AC transmission systems. The advantage and feasibility of this method in DC fault isolation is studied using a 1GW three terminal HVDC test system simulated on PSCAD platform.

KW - HVDC

KW - DC Grid

KW - Power Flow

KW - DC/DC Convertor

KW - Semiconductor Power Switch

U2 - 10.1049/cp.2012.1972

DO - 10.1049/cp.2012.1972

M3 - Published conference contribution

SN - 978-1-84919-700-7

SP - 1

EP - 6

BT - 10th International Conference on AC and DC Power Transmission, ACDC 2012

PB - Curran Associates

T2 - 10th International Conference on AC and DC Power Transmission, ACDC 2012

Y2 - 4 December 2012 through 6 December 2012

ER -

DC transmission grids with fault tolerant LCL VSC converters and mechanical DC circuit breakers

Abstract

Conference

Keywords

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