Comparison of fault currents in multiterminal HVDC grids with different grounding schemes

The requirements of dc circuit breakers used to protect multiterminal HVDC networks are specified by the prospective fault current. The fault current, however, strongly depends on the grounding scheme of the network. Low-ohmic and high-impedance earthing practices with different grounding points are presented and compared with each other in terms of fault currents and overvoltages during a pole-to-ground fault. To do so, monopolar and bipolar configurations of a multiterminal HVDC cable network are implemented in PSCAD and simulations are performed.

[1]  Boon-Teck Ooi,et al.  Locating and Isolating DC Faults in Multi-Terminal DC Systems , 2007, IEEE Transactions on Power Delivery.

[2]  C. M. Franck,et al.  Contribution of Fault Current Sources in Multiterminal HVDC Cable Networks , 2013, IEEE Transactions on Power Delivery.

[3]  Goran Andersson,et al.  Multiterminal HVDC Networks—What is the Preferred Topology? , 2014, IEEE Transactions on Power Delivery.

[4]  Lie Xu,et al.  Topologies for VSC transmission , 2001 .

[5]  S. Hara,et al.  Fault protection of metallic return circuit of Kii channel HVDC system , 2001 .

[6]  Jean Mahseredjian,et al.  Modeling of Modular Multilevel Converters for the France-Spain link , 2013 .

[7]  M.P. Bahrman,et al.  The ABCs of HVDC transmission technologies , 2007, IEEE Power and Energy Magazine.

[8]  J.P. Bowles,et al.  Consideration for Implementing Multiterminal DC Systems , 1985, IEEE Transactions on Power Apparatus and Systems.

[9]  Dirk Van Hertem,et al.  Multi-terminal VSC HVDC for the European supergrid: Obstacles , 2010 .

[10]  Dirk Van Hertem,et al.  HVDC Grid Feasibility Study , 2013 .

[11]  Jin Yang,et al.  Multiterminal DC Wind Farm Collection Grid Internal Fault Analysis and Protection Design , 2010, IEEE Transactions on Power Delivery.

[12]  C M Franck,et al.  HVDC Circuit Breakers: A Review Identifying Future Research Needs , 2011, IEEE Transactions on Power Delivery.

[13]  Jürgen Häfner,et al.  Proactive Hybrid HVDC Breakers - A key Innovation for Reliable HVDC Grids , 2011 .

[14]  E. W. Kimbark,et al.  Transient Overvoltages Caused by Monopolar Ground Fault on Bipolar DC Line: Theory and Simulation , 1970 .

[15]  Jae-Do Park,et al.  VSC-HVDC system protection: A review of current methods , 2011, 2011 IEEE/PES Power Systems Conference and Exposition.

[16]  Stefano Lauria,et al.  Short Circuit and induced voltage transient study on a planned 1000 MW HVDC-VSC cable link , 2011 .

[17]  M. Bucher,et al.  Analysis of Transient Fault Currents in Multi-Terminal HVDC Networks during Pole-to-Ground Faults , 2013 .

[18]  F. Schettler,et al.  HVDC transmission systems using voltage sourced converters design and applications , 2000, 2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134).

[19]  C. M. Franck,et al.  The Effect of Grid Topology on Transient Fault Currents in Multi-Terminal VSC-HVDC Offshore Networks , 2013 .

[20]  Voislav Jankov,et al.  HVDC system performance with a neutral conductor , 2010, 2010 International Conference on High Voltage Engineering and Application.

[21]  Thomas Worzyk,et al.  Submarine Power Cables: Design, Installation, Repair, Environmental Aspects , 2009 .

[22]  C. M. Franck,et al.  Options for ground fault clearance in HVDC offshore networks , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).