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2005
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Observed hybrid oscillations in an electrical distribution system

15 years 10 months ago
Observed hybrid oscillations in an electrical distribution system
Slow oscillations, with a period of around 15 minutes, were observed in an 11kV electrical distribution system. Investigations determined that the oscillations were a result of interactions between tap-changing transformers and switched capacitors. Analysis required a hybrid systems framework, due to the non-smooth (switched) nature of these interactions. It was found that the oscillations could be suppressed by adjusting the lower limit of the capacitor deadband. A grazing bifurcation separated oscillatory from steady-state behaviour.
Vaibhav Donde, Ian A. Hiskens
Added 25 Jun 2010
Updated 25 Jun 2010
Type Conference
Year 2005
Where ISCAS
Authors Vaibhav Donde, Ian A. Hiskens
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