Analysis of the dc dynamics of VSC-HVDC systems using a frequency domain approach
2013 (English)In: 2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), IEEE Computer Society, 2013, 6837285- p.Conference paper (Refereed)
In this paper, the dc dynamic performance of VSC-HVDC systems is investigated using the frequency domain approach. In a previous work, it has been found through the eigenvalue analysis that, in some situations, the VSC-HVDC system becomes unstable when the converter which controls the direct-voltage injects power exceeding a certain value. However, the cause of the instability was not addressed. This paper attempts to answer some of the remaining questions in the previous work through the frequency response of the elements that compose the system. In order to facilitate the analysis, appropriate assumptions have been made. The transfer function of both, dc grid and the converter which controls the direct-voltage, are derived. The results from the analysis show that, depending on the direction of the power, the frequency response of the converter has a negative resistance characteristic which amplifies resonances in the dc grid.
Place, publisher, year, edition, pages
IEEE Computer Society, 2013. 6837285- p.
, Asia-Pacific Power and Energy Engineering Conference, APPEEC, ISSN 2157-4839
Eigenvalue Analysis, Frequency Domain Analysis, HVDC, VSC
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-151086DOI: 10.1109/APPEEC.2013.6837285ScopusID: 2-s2.0-84903971433ISBN: 978-147992522-3OAI: oai:DiVA.org:kth-151086DiVA: diva2:746976
2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2013, 8 December 2013 through 11 December 2013, Kowloon, Hong Kong
QC 201409152014-09-152014-09-152014-09-15Bibliographically approved