Solving the ferroresonance problem when compensating a DC converter station with a series capacitor

When a DC link feeds into an AC power system where the short circuit ratio is low or very low, the AC voltage requires some form of supplementary control. The concept of a series capacitor located between the AC system and the DC link has been an attractive consideration but is susceptible to ferror...

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Bibliographic Details
Published in:IEEE transactions on power systems 1996-08, Vol.11 (3), p.1325-1331
Main Author: Woodford, D.A.
Format: Article
Language:English
Subjects:
Applied sciences
Capacitors
Circuits
Control systems
DC-DC power converters
Disturbances. Regulation. Protection
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Feeds
Ferroresonance
Low voltage
Power networks and lines
Power system control
Power systems
Voltage control
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Summary:When a DC link feeds into an AC power system where the short circuit ratio is low or very low, the AC voltage requires some form of supplementary control. The concept of a series capacitor located between the AC system and the DC link has been an attractive consideration but is susceptible to ferroresonance between the series capacitor and the converter transformers, Using DC link controls judiciously, it is shown that any onset of ferroresonance can be eliminated. Benefits to series compensating a DC converter are presented.
ISSN:0885-8950
1558-0679
DOI:10.1109/59.535673