Multi-Infeed HVDC Interaction Studies Using Small-Signal Stability Assessment

This paper presents an analysis of multi infeed high-voltage dc (HVDC) interactions using small-signal analysis techniques. The modeling details that are necessary to adequately represent the dynamics of the HVDC converters and the ac network are investigated, and the models are validated against an...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2009-04, Vol.24 (2), p.910-918
Main Authors: Karawita, C., Annakkage, U.D.
Format: Article
Language:English
Subjects:
Applied sciences
Assessments
Computer simulation
Control interactions
Direct current networks
Dynamic tests
Dynamical systems
Dynamics
Electrical engineering. Electrical power engineering
Electrical power engineering
Electromagnetic modeling
Exact sciences and technology
HVDC transmission
multiterminal HVDC
Networks
Power electronics, power supplies
Power networks and lines
Power system analysis computing
Power system dynamics
Power system modeling
Power system simulation
Power system stability
Power system transients
PSCAD
small-signal stability
Stability
Stability analysis
Terminals
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Summary:This paper presents an analysis of multi infeed high-voltage dc (HVDC) interactions using small-signal analysis techniques. The modeling details that are necessary to adequately represent the dynamics of the HVDC converters and the ac network are investigated, and the models are validated against an Electromagnetic Transient Simulation program. The paper shows that ac network dynamics must be modeled in order to obtain meaningful results from the small-signal stability study. A small test system with two HVDC infeeds is then used to demonstrate the presence of interactions in that system. The case studies presented in this paper indicate that it is possible to have interactions between the HVDC terminals in an ac system. This paper recommends that a small-signal interaction study, which is similar to what is presented in this paper, should be performed to identify these interactions.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2008.2002986