High frequent modelling of a modular multilevel converter using passive components

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Abstract

Prevalence of High Voltage direct current (HVDC) based on Voltage source converters (VSC) has made it necessary to investigate the behavior of the converter under various fault conditions. In this paper we will deal with the transient characteristics of a modular multilevel converter (MMC). This means that a high frequency model of the converter has to be designed, which gives a better overview of the impact of high frequency transients etc. The functionality of the model is demonstrated by application to grid connections of off-shore wind power plants. Grid connection of an offshore wind power plant using HVDC fundamentally changes the electrical environment for the power plant. Detailed knowledge and understanding of the characteristics and behavior of all relevant power system components under all conditions, including under transients, are required in order to develop reliable offshore wind power plant employing HVDC. In the present study, a back to back HVDC transmission system is designed in PSCAD/EMTDC. Simulations and results showing the importance of high frequent modeling are presented.
Original languageEnglish
Title of host publicationProceedings of IPST 2013
Number of pages6
PublisherIEEE
Publication date2013
Publication statusPublished - 2013
EventInternational Conference on Power Systems Transients - Vancouver, British Columbia, Canada
Duration: 18 Jun 201320 Jun 2013

Conference

ConferenceInternational Conference on Power Systems Transients
CountryCanada
CityVancouver, British Columbia
Period18/06/201320/06/2013

Keywords

  • Modular multilevel converter
  • High frequency modeling
  • High voltage direct current (HVDC) transmission
  • Electromagnetic transients (EMT) simulation

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