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Many future off-shore wind power plants (WPPs) are commissioned or planned at long distance off-shore locations.
HVDC transmission system provides a viable transmission solution for these off-shore WPPs. This paper focuses on the
control and operation of HVDC connected off-shoreWPPs during faults in order to fulfill different grid code requirements. A feed
forward signal based HVDC voltage control algorithm has been presented in order to improve the low voltage fault ride through
(LV-FRT) capability of such a system. Based on the presented control methods, active control of collector network AC voltage
level is achieved. The full-converter based wind turbines respond to the change in network AC voltage by reducing their active
power export. The reported results show a very satisfactory system response during different fault types including balanced
and unbalanced faults in the host power system and severe fault at the collector network. Power hardware in the loop based
scaled-down test setup is also presented in the paper. A detailed wind turbine model developed in a real time digital simulation is
connected via a power amplifier to an external voltage sourced converter (VSC) representing the VSC-HVDC. A proper control
co-ordination and interaction between the wind turbine VSC and HVDC VSC is also reported in the paper.
Original languageEnglish
JournalWind Energy
Publication date2012
Number of pages2
ISSN1095-4244
StateSubmitted

Keywords

  • HVDC, Off-shore wind power plant, Low voltage fault ride through, Full-converter wind turbine system, Power hardware in the loop test
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