Disturbance Attenuation of DC Voltage Droop Control Structures in a Multi-Terminal HVDC Grid

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2017


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DC voltage droop control is seen as the preferred control structure for primary voltage control of future multiterminal HVDC systems. Different droop control structures have been proposed in literature which can be classified in eight categories. This paper contributes to an analysis of the disturbance rejection of these droop control structures. The approach is based on multi-variable frequency response analysis where both ac and dc grid dynamics are incorporated. In particular, the amplification of dc voltage oscillations due to wind power variations is analyzed using singular value analysis. Further, the impact of dc cable modeling on the results is discussed. In addition, it is shown that the maximum singular value limits, frequently used in literature for MIMO-analysis, are not sufficient to prove that the impact of certain disturbances on analyzed outputs is within a certain boundary. It is necessary to verify the results by a multiple input single output analysis of the transfer functions connecting the inputs with the highest amplified output.
Original languageEnglish
Title of host publicationProceedings of 12th IEEE Power and Energy Society PowerTech Conference
Number of pages6
Publication date2017
StatePublished - 2017
Event12th IEEE Power and Energy Society PowerTech Conference - Manchester, United Kingdom


Conference12th IEEE Power and Energy Society PowerTech Conference
LocationUniversity Place, University of Manchester.
CountryUnited Kingdom


  • HVDC transmission, Wind energy integration, Control system analysis, State-space methods
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