Voltage control of offshore load connected to a multi-terminal hvdc transmission system

Z. Solhjoukhah, A. Egea-Alvarez, O. Gomis-Bellmunt

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

3 Citations (Scopus)

Abstract

This paper presents a voltage control for an offshore load fed by a Multi-Terminal VSC-HVDC transmission system (MT-HVDC). The studied system is composed by two GSCs (Grid Side Converters) and one OSC (Offshore Side Converter). The objective is to maintain the amplitude and frequency of the AC voltage constant at the offshore terminal with a minimum overshoot. A vector control strategy including a current control loop and a voltage control loop is proposed for the OSC and also LQG (Linear-Quadratic-Gaussian) compensator is employed to improve the voltage response of offshore load. The performance of this controller is validated using simulation in MATLAB/SIMULINK software for three operating conditions: normal operation, no-load and start-up of the offshore load. Simulation results illustrate that the AC voltage of load can be governed at its nominal value and MT-HVDC system linked to the offshore load with the proposed controller is able to provide a reliable dynamic operation and a desirable voltage quality during load variations.

Original languageEnglish
Title of host publicationAC and DC Power Transmission, 11th IET International Conference on
PublisherInstitution of Engineering and Technology
Number of pages9
Volume2015
EditionCP654
ISBN (Print)9781849199827
DOIs
Publication statusPublished - 13 Jul 2015
Event11th IET International Conference on AC and DC Power Transmission - Birmingham, United Kingdom
Duration: 10 Feb 201512 Feb 2015
http://conferences.theiet.org/acdc/index.cfm

Conference

Conference11th IET International Conference on AC and DC Power Transmission
CountryUnited Kingdom
CityBirmingham
Period10/02/1512/02/15
Internet address

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Keywords

  • multi-terminal VSC-HVDC transmission (MT-HVDC)
  • offshore load
  • vector control strategy
  • voltage source converter (VSC)

Cite this

Solhjoukhah, Z., Egea-Alvarez, A., & Gomis-Bellmunt, O. (2015). Voltage control of offshore load connected to a multi-terminal hvdc transmission system. In AC and DC Power Transmission, 11th IET International Conference on (CP654 ed., Vol. 2015). Institution of Engineering and Technology. https://doi.org/10.1049/cp.2015.0063