Droop control optimization for multi-terminal HVDC transmission system

Astrid Thoen, Magnus Svean, Olivier Lebas Vincent Maxime, Roni Irnawan, Filipe Miguel Faria da Silva

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

2 Citations (Scopus)

Abstract

This paper proposes a method to determine optimal voltage droop control values for converters in a VSC-based multi-terminal HVDC system (MTDC). The modelled MTDC system is obtained by connecting a wind-farm to an existing point-to-point (PtP) cable connection between two onshore converter stations. The challenge with such arrangement is to control the share of power between the two onshore converters. In order to overcome this problem, the DC voltage droop control will be implemented. In the end of the paper, a guideline will be presented to dictate how the power is shared between two converters in a 3-terminal MTDC system. The guideline explain how to determine the optimal droop constants k v , which is influenced by transmission losses, cable length between stations, converter limits (active power- and voltage limits) and their sensitivity regarding droop values. The results shows that different factors affect the choice of the droop constant.
Original languageEnglish
Title of host publicationProceedings of the 2018 53rd International Universities' Power Engineering Conference (UPEC)
Number of pages6
PublisherIEEE Press
Publication dateSep 2018
Pages1-6
ISBN (Print)978-1-5386-2911-6
ISBN (Electronic)978-1-5386-2910-9
DOIs
Publication statusPublished - Sep 2018
Event2018 53rd International Universities Power Engineering Conference - Glasgow, United Kingdom
Duration: 4 Sep 20187 Sep 2018

Conference

Conference2018 53rd International Universities Power Engineering Conference
CountryUnited Kingdom
CityGlasgow
Period04/09/201807/09/2018

Keywords

  • DC voltage droop control
  • MTDC
  • HVDC technology
  • Droop control
  • Wind power
  • Upper lever control

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