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Droop Control Design of Multi-VSC Systems for Offshore Networks to Integrate Wind Energy

Author

Listed:
  • Muhammad Raza

    (Departament d’Enginyeria Electrica, Centre d’Innovacio Tecnologica en Convertidors Estatics i Accionaments (CITCEA-UPC), Universitat Politecnica de Catalunya, BarcelonaTECH. ETS d’Enginyeria Industrial de Barcelona, Barcelona 08028, Spain)

  • Kevin Schönleber

    (Electrical Systems, GE Renewable Energy, Barcelona 08005, Spain)

  • Oriol Gomis-Bellmunt

    (Departament d’Enginyeria Electrica, Centre d’Innovacio Tecnologica en Convertidors Estatics i Accionaments (CITCEA-UPC), Universitat Politecnica de Catalunya, BarcelonaTECH. ETS d’Enginyeria Industrial de Barcelona, Barcelona 08028, Spain)

Abstract

This research envisages the droop control design of multi voltage source converter systems for offshore networks to integrate wind power plant with the grids. An offshore AC network is formulated by connecting several nearby wind power plants together with AC cables. The net energy in the network is transferred to onshore using voltage source high voltage direct current (VSC-HVDC) transmissionsystems. In the proposed configuration, an offshore network is energized by more than one VSC-HVDC system, hereby providing redundancy to continue operation in case of failure in one of the HVDC transmission lines. The power distribution between VSC-HVDC systems is done using a droop control scheme. Frequency droop is implemented to share active power, and voltage droop is implemented to share reactive power. Furthermore, a method of calculating droop gains according to the contribution factor of each converter is presented. The system has been analyzed to evaluate the voltage profile of the network affected by the droop control. Nonlinear dynamic simulation has been performed for the verification of the control principle.

Suggested Citation

  • Muhammad Raza & Kevin Schönleber & Oriol Gomis-Bellmunt, 2016. "Droop Control Design of Multi-VSC Systems for Offshore Networks to Integrate Wind Energy," Energies, MDPI, vol. 9(10), pages 1-16, October.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:10:p:826-:d:80491
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    Citations

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    Cited by:

    1. Raza, Muhammad & Collados, Carlos & Gomis-Bellmunt, Oriol, 2017. "Reactive power management in an offshore AC network having multiple voltage source converters," Applied Energy, Elsevier, vol. 206(C), pages 793-803.
    2. Wiegner, J.F. & Andreasson, L.M. & Kusters, J.E.H. & Nienhuis, R.M., 2024. "Interdisciplinary perspectives on offshore energy system integration in the North Sea: A systematic literature review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 189(PA).
    3. Goran Grdenić & Marko Delimar, 2017. "Small-Signal Stability Analysis of Interaction Modes in VSC MTDC Systems with Voltage Margin Control," Energies, MDPI, vol. 10(7), pages 1-22, June.
    4. Ali Bidadfar & Oscar Saborío-Romano & Jayachandra Naidu Sakamuri & Vladislav Akhmatov & Nicolaos Antonio Cutululis & Poul Ejnar Sørensen, 2019. "Coordinated Control of HVDC and HVAC Power Transmission Systems Integrating a Large Offshore Wind Farm," Energies, MDPI, vol. 12(18), pages 1-13, September.

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