Operation Modes Analysis and Coordinated Control Strategies for the Novel Hybrid MTDC System

The hybrid HVDC transmission system combines the advantages of conventional LCC-HVDC and flexible VSC-HVDC system, and is an attractive solution for future long-distance and large-capacity transmission applications; in addition, the complexity of the topology also brings new demands for coordinated control strategies to improve the operational reliability of hybrid multi-terminal HVDC system. This paper focus on a novel hybrid MTDC system, where rectifier converter adopts the conventional LCC and the series-parallel LCC and VSC constitute the inverter side. Based on this novel hybrid MTDC system, the potential operation modes and corresponding coordinated control strategies are proposed and analyzed to provide satisfactory performance for converter stations. Finally, simulations results based on PSCAD/EMTDC verify the effectiveness of the proposed control strategies.

[1]  Ying Sun,et al.  Study on Control Strategies to Improve the Stability of Multi-Infeed HVDC Systems Applying VSC-HVDC , 2006, 2006 Canadian Conference on Electrical and Computer Engineering.

[2]  M. R. Iravani,et al.  Application of GTO voltage source inverter in a hybrid HVDC link , 1994 .

[3]  Aaas News,et al.  Book Reviews , 1893, Buffalo Medical and Surgical Journal.

[4]  Vijay K. Sood,et al.  A hybrid HVDC transmission system supplying a passive load , 2010, 2010 IEEE Electrical Power & Energy Conference.

[5]  Huan Li,et al.  A New Recovery Strategy of HVDC System During AC Faults , 2019, IEEE Transactions on Power Delivery.

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

[7]  Guangfu Tang,et al.  New technologies of voltage source converter (VSC) for HVDC transmission system based on VSC , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[8]  Neil Genzlinger.  A. and Q , 2006 .

[9]  B. Qahraman,et al.  A VSC based series hybrid converter for HVDC transmission , 2005, Canadian Conference on Electrical and Computer Engineering, 2005..

[10]  Kevin Barraclough,et al.  I and i , 2001, BMJ : British Medical Journal.

[11]  G. Olsson,et al.  Comparison of Different Frequency Controllers for a VSC-HVDC Supplied System , 2008, IEEE Transactions on Power Delivery.

[12]  Sun Xu,et al.  Coordination control for offshore wind power sending through hybrid HVDC , 2013, 2013 IEEE Grenoble Conference.

[13]  A. Ekstrom,et al.  Harmonic cancellation of a hybrid converter , 1998 .

[14]  Liang Xiao,et al.  Analysis of coupling effect on LCC-MCC hybrid HVDC from parallel AC lines in close proximity , 2015, 2015 IEEE Power & Energy Society General Meeting.

[15]  W. Marsden.  I and J , 2012 .

[16]  Bernd Orlik,et al.  Dual HVDC system with line- and self-commutated converters for grid connection of offshore wind farms , 2013, 2013 International Conference on Renewable Energy Research and Applications (ICRERA).

[17]  B. Orlik,et al.  Parallel operation of thyristor- and IGBT-based HVDC , 2007, 2007 European Conference on Power Electronics and Applications.