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Title: Frequency-Dependent Cable Modelling for Small-Signal Stability Analysis of VSC-HVDC Systems
Authors: Beerten, Jef ×
D'Arco, Salvatore
Suul, Jon Are #
Issue Date: 21-Apr-2016
Publisher: The Institution of Engineering and Technology (IET)
Series Title: IET Generation Transmission & Distribution vol:10 issue:6 pages:1370-1381
Conference: Special Issue: Selected Papers from the 11th IET International Conference on AC and DC Power Transmissions (ACDC 2015)
Abstract: State-of-the-art time-domain models of power cables account for the frequency dependency of physical parameters to enable accurate transient simulations of high-voltage transmission schemes. Owing to their formulation, these models cannot be directly converted into a state-space form as required for small-signal eigenvalue analysis. Thus, dc cables are commonly represented in high-voltage direct current (HVDC) power system stability studies by cascaded pi-section equivalents that neglect the frequency-dependent effects. This study demonstrates how the conventional cascaded pi-section model is unable to accurately represent the damping characteristic of the cable and how this can lead to incorrect stability assessments. Furthermore, an alternative model consisting of cascaded pi-sections with multiple parallel branches is explored, which allows for a state-space representation while accounting for the frequency dependency of the cable parameters. The performance of the proposed model is benchmarked against state-of-the-art cable models both in the frequency domain and in the time domain. Finally, the study provides a comparative example of the impact of the cable modelling on the small-signal dynamics of a point-to-point voltage-source converter (VSC) HVDC transmission scheme.
URI: 
ISSN: 1751-8687
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - ELECTA, Electrical Energy Computer Architectures
× corresponding author
# (joint) last author

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