DC fault protection strategy considering DC network partition

This paper investigates DC network partition and alternative DC fault protection strategy for Multi-terminal HVDC (MTDC) system. Fast acting DC Circuit Breakers (DCCBs) or fault blocking DC-DC converters can be configured at strategic locations to allow the entire MTDC system to be operated interconnected but partitioned into islanded DC network zones following faults. In case of any DC fault event, the DCCBs or DC-DC converters at the strategic cable connections that link the different DC network partitions are opened or blocked such that the faulty DC network zone is quickly isolated from the remaining of the MTDC system. Thus, the healthy DC network zone can remain operational or recover quickly to restore power transmission. Each DC network zone can be protected using AC circuit breakers and DC switches for cost reduction. The validity of the proposed protection strategy is confirmed using MATLAB/SIMULINK simulations.

[1]  C D Barker,et al.  An alternative approach to HVDC grid protection , 2012 .

[2]  Lie Xu,et al.  DC fault analysis of VSC based multi-terminal HVDC systems , 2012 .

[3]  Dragan Jovcic,et al.  Developing regional, radial DC grids and their interconnection into large DC grids , 2014, 2014 IEEE PES General Meeting | Conference & Exposition.

[4]  Dragan Jovcic,et al.  Evaluation of Semiconductor Based Methods for Fault Isolation on High Voltage DC Grids , 2013, IEEE Transactions on Smart Grid.

[5]  P. Bauer,et al.  Impact of HVDC Transmission System Topology on Multiterminal DC Network Faults , 2015, IEEE Transactions on Power Delivery.

[6]  Rong Zeng,et al.  DC/DC converters based on hybrid MMC for HVDC grid interconnection , 2015 .

[7]  Derrick Holliday,et al.  Quasi Two-Level Operation of Modular Multilevel Converter for Use in a High-Power DC Transformer With DC Fault Isolation Capability , 2015, IEEE Transactions on Power Electronics.

[8]  Keith Bell,et al.  Considerations in design of an offshore network , 2014 .

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

[10]  P. Manohar,et al.  DC line protection for VSC-HVDC system , 2012, 2012 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES).

[11]  Boon-Teck Ooi,et al.  DC overvoltage control during loss of converter in multiterminal voltage-source converter-based HVDC (M-VSC-HVDC) , 2003 .

[12]  Zheng Xu,et al.  Study of protection strategy for VSC based HVDC system , 2003, 2003 IEEE PES Transmission and Distribution Conference and Exposition (IEEE Cat. No.03CH37495).

[13]  Lie Xu,et al.  DC fault analysis of MMC based HVDC system for large offshore wind farm integration , 2013 .

[14]  Boon-Teck Ooi,et al.  Protection of VSC-multi-terminal HVDC against DC faults , 2002, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).

[15]  Lie Xu,et al.  Analysis of voltage source converter-based high-voltage direct current under DC line-to-earth fault , 2015 .

[16]  Sungmin Kim,et al.  Control of voltage source converter based multi-terminal DC grid under DC fault operating condition , 2014, 2014 IEEE Energy Conversion Congress and Exposition (ECCE).

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

[18]  Stephen J. Finney,et al.  An alternative protection strategy for multi-terminal HVDC , 2014 .