Control of a hybrid HVDC link to increase inter-regional power transfer

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

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


This paper examines the application of a hybrid HVDC link in a two area power system with the purpose of increasing the inter-regional power transfer. A hybrid HVDC system combines both LCCs and VSCs, and hence it is capable of combining the benefits of both converter technologies, such as reduced cost and power losses due to the LCCs, and ability to connect to weak AC grids due to the VSCs. The mathematical model of the power system including the HVDC link is presented. The increase in inter-area power transfer is demonstrated and compared to the case when the hybrid HVDC link is not used. Furthermore, the transient stability of the AC/DC power system was enhanced using auxiliary controllers for Power Oscillation Damping (POD). The results show the ability of the hybrid HVDC link to increase the unidirectional inter-area power transfer, while enhancing the transient stability of the power system.
Original languageEnglish
Title of host publicationProceedings of 2016 18th Mediterranean Electrotechnical Conference
Number of pages6
Publication date2016
ISBN (Print)9781509000586
Publication statusPublished - 2016
Event2016 18th Mediterranean Electrotechnical Conference - Limassol, Cyprus
Duration: 18 Apr 201620 Apr 2016


Conference2016 18th Mediterranean Electrotechnical Conference
Series2016 18th Mediterranean Electrotechnical Conference (melecon). Proceedings


  • power transmission control
  • HVDC power convertors
  • HVDC power transmission
  • power system transient stability
  • line commutated converter
  • hybrid HVDC link control
  • two area power system
  • interregional power transfer
  • hybrid HVDC system
  • LCC
  • VSC
  • mathematical model
  • AC-DC power system transient stability enhancement
  • auxiliary controller
  • power oscillation damping
  • POD
  • unidirectional inter-area power transfer
  • HVDC transmission
  • Mathematical model
  • Hybrid power systems
  • Voltage control
  • Generators
  • Power conversion
  • Hybrid HVDC
  • d.c. transmission
  • AC-DC power convertors (rectifiers)
  • DC-AC power convertors (invertors)
  • Control of electric power systems

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