Conference paper
Disturbance Attenuation of DC Voltage Droop Control Structures in a Multi-Terminal HVDC Grid
Department of Electrical Engineering, Technical University of Denmark1
Center for Electric Power and Energy, Centers, Technical University of Denmark2
Electric Power Systems, Center for Electric Power and Energy, Centers, Technical University of Denmark3
Energy Analytics and Markets, Center for Electric Power and Energy, Centers, Technical University of Denmark4
Polytechnic University of Catalonia5
Svenska Kraftnät6
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.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2017 |
| Pages: | 1-6 |
| Proceedings: | 12th IEEE Power and Energy Society PowerTech Conference |
| ISBN: | 1509042377 , 1509042385 , 9781509042371 and 9781509042388 |
| Types: | Conference paper |
| DOI: | 10.1109/PTC.2017.7981116 |
| ORCIDs: | Thams, Florian and Chatzivasileiadis, Spyros |
AC grid dynamics Converters DC cable modeling DC grid dynamics DC voltage droop control structures DC voltage oscillations Frequency response HVDC power transmission MIMO-analysis Transfer functions Voltage control Wind farms Wind power generation disturbance attenuation disturbance rejection frequency response multiple input single output analysis multiterminal HVDC grid multivariable frequency response analysis primary voltage control singular value analysis singular value decomposition transfer functions voltage control wind power variations
