A study on the control of a hybrid MTDC system supplying a passive network

Omar Kotb, Mehrdad Ghandhari, Robert Eriksson, Vijay K. Sood

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

A hybrid Multi-Terminal DC (MTDC) system can combine the benefits of both Line Commutated Converter (LCC) and Voltage Source Converter (VSC) technologies in the form of reduced losses and flexibility to connect to weak and passive grids. In this paper, an analysis of control strategies used in a hybrid MTDC system is presented. A case study of a four terminal hybrid MTDC system supplying a passive AC network was considered for simulation study. A control scheme based on voltage margin was developed to cope with the condition of main DC voltage controlling station tripping. Two various control scenarios for controlling the VSCs connected to the passive network were presented and compared. The system performance was studied through EMTP-RV simulations under different disturbances. The results show the ability of selected converter control modes and proposed control schemes to operate the hybrid MTDC system under different disturbance conditions.
Original languageEnglish
Title of host publicationProceedings of 2014 International Conference on Power System Technology
PublisherIEEE
Publication date2014
Pages2427-2432
Article numberFP3113
ISBN (Print)9781479950324
DOIs
Publication statusPublished - 2014
Event2014 International Conference on Power System Technology - Chengdu, China
Duration: 20 Oct 201422 Oct 2014

Conference

Conference2014 International Conference on Power System Technology
Country/TerritoryChina
CityChengdu
Period20/10/201422/10/2014

Keywords

  • Power, Energy and Industry Applications
  • Frequency control
  • Hybrid MTDC
  • MTDC
  • MTDC control
  • passive network
  • Passive networks
  • Power control
  • Power conversion
  • Switches
  • Voltage control

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