HVDC Network: DC fault ride-through improvement

Research output: Contribution to conferencePaper

Abstract

This paper compares the transient behaviour of two HVDC networks with similar structures but which use different converter topologies, namely two-level and H-bridge modular multilevel converters. The key objective of this comparison is to show that the use of HVDC converters that inherent dc fault reversed blocking capability is beneficial to the HVDC networks in term of dc fault ride-through capability improvement (may reduce the risk of converter stations damage from over-current during dc side faults). The improvement in the HVDC network dc fault ride-through capability is achieved by stopping grid contribution to the fault current, and minimization of the transient component due to discharge of the dc side capacitors. Therefore HVDC networks that use converter stations with dc fault reversed blocking capability are expected to recover swiftly from dc side faults compared to those using converter stations without dc fault reversed blocking capability. To illustrate the outcomes of this comparison, the responses of both HVDC networks are examined when subjected to dc side faults. Issues such as lead-through and inrush currents in the ac and dc sides during and following dc faults are discussed.
LanguageEnglish
Number of pages8
Publication statusPublished - 6 Sep 2011
EventCIGRE 2011 - Halifax, Canada
Duration: 6 Sep 20118 Sep 2011

Conference

ConferenceCIGRE 2011
CountryCanada
CityHalifax
Period6/09/118/09/11

Fingerprint

Electric fault currents
Capacitors
Lead
Topology

Keywords

  • HVDC network
  • DC fault ride through capability
  • DC power flow

Cite this

Adam, G. P., Kalcon, G., Finney, S. J., Holliday, D., Anaya-Lara, O., & Williams, B. W. (2011). HVDC Network: DC fault ride-through improvement. Paper presented at CIGRE 2011, Halifax, Canada.
Adam, G.P. ; Kalcon, G. ; Finney, S.J. ; Holliday, D. ; Anaya-Lara, O. ; Williams, B.W. / HVDC Network : DC fault ride-through improvement. Paper presented at CIGRE 2011, Halifax, Canada.8 p.
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Adam, GP, Kalcon, G, Finney, SJ, Holliday, D, Anaya-Lara, O & Williams, BW 2011, 'HVDC Network: DC fault ride-through improvement' Paper presented at CIGRE 2011, Halifax, Canada, 6/09/11 - 8/09/11, .

HVDC Network : DC fault ride-through improvement. / Adam, G.P.; Kalcon, G.; Finney, S.J.; Holliday, D.; Anaya-Lara, O.; Williams, B.W.

2011. Paper presented at CIGRE 2011, Halifax, Canada.

Research output: Contribution to conferencePaper

TY - CONF

T1 - HVDC Network

T2 - DC fault ride-through improvement

AU - Adam, G.P.

AU - Kalcon, G.

AU - Finney, S.J.

AU - Holliday, D.

AU - Anaya-Lara, O.

AU - Williams, B.W.

PY - 2011/9/6

Y1 - 2011/9/6

N2 - This paper compares the transient behaviour of two HVDC networks with similar structures but which use different converter topologies, namely two-level and H-bridge modular multilevel converters. The key objective of this comparison is to show that the use of HVDC converters that inherent dc fault reversed blocking capability is beneficial to the HVDC networks in term of dc fault ride-through capability improvement (may reduce the risk of converter stations damage from over-current during dc side faults). The improvement in the HVDC network dc fault ride-through capability is achieved by stopping grid contribution to the fault current, and minimization of the transient component due to discharge of the dc side capacitors. Therefore HVDC networks that use converter stations with dc fault reversed blocking capability are expected to recover swiftly from dc side faults compared to those using converter stations without dc fault reversed blocking capability. To illustrate the outcomes of this comparison, the responses of both HVDC networks are examined when subjected to dc side faults. Issues such as lead-through and inrush currents in the ac and dc sides during and following dc faults are discussed.

AB - This paper compares the transient behaviour of two HVDC networks with similar structures but which use different converter topologies, namely two-level and H-bridge modular multilevel converters. The key objective of this comparison is to show that the use of HVDC converters that inherent dc fault reversed blocking capability is beneficial to the HVDC networks in term of dc fault ride-through capability improvement (may reduce the risk of converter stations damage from over-current during dc side faults). The improvement in the HVDC network dc fault ride-through capability is achieved by stopping grid contribution to the fault current, and minimization of the transient component due to discharge of the dc side capacitors. Therefore HVDC networks that use converter stations with dc fault reversed blocking capability are expected to recover swiftly from dc side faults compared to those using converter stations without dc fault reversed blocking capability. To illustrate the outcomes of this comparison, the responses of both HVDC networks are examined when subjected to dc side faults. Issues such as lead-through and inrush currents in the ac and dc sides during and following dc faults are discussed.

KW - HVDC network

KW - DC fault ride through capability

KW - DC power flow

UR - http://www.cigre.org/

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M3 - Paper

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Adam GP, Kalcon G, Finney SJ, Holliday D, Anaya-Lara O, Williams BW. HVDC Network: DC fault ride-through improvement. 2011. Paper presented at CIGRE 2011, Halifax, Canada.