Conference paper
Stability of DC Voltage Droop Controllers in VSC HVDC Systems
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
SINTEF4
Norwegian University of Science and Technology5
Christian Albrechts University of Kiel6
Future multi-terminal HVDC systems are expected to utilize dc voltage droop controllers and several control implementations have been proposed in literature. This paper first classifies possible dc droop implementations in a simple framework. Then, the small-signal stability of a VSC-based converter station is analyzed for all the identified droop control schemes.
The stability range for the system is determined as a function of the droop gain and is used to compare the flexibility and robustness of the implementations. The comparisons reveal that the droop implementations based on the ac current and dc voltage achieve a wider stability region than the other schemes and a limited sensitivity to the droop gain.
| Language: | English |
|---|---|
| Publisher: | IEEE Press |
| Year: | 2015 |
| Pages: | 1-7 |
| Proceedings: | 2015 IEEE Eindhoven PowerTech |
| ISBN: | 147997692X , 1479976938 , 1479976954 , 9781479976928 , 9781479976935 and 9781479976959 |
| Types: | Conference paper |
| DOI: | 10.1109/PTC.2015.7232614 |
| ORCIDs: | Thams, Florian |
Circuit stability DC voltage droop controllers Eigenvalues and eigenfunctions HVDC power convertors HVDC transmission Power system stability Sensitivity Stability analysis Voltage control ac current dc voltage droop gain power transfer capability small-signal stability stability voltage control
