Mixed phasor and time domain modelling of AC networks with changeover management

Hakan Dogan Parildar
Politecnico di Milano, Dipartimento di Elettronica, Informazione e Bioingegneria, Milano, Italy

Alberto Leva
Politecnico di Milano, Dipartimento di Elettronica, Informazione e Bioingegneria, Milano, Italy

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp14096533

Ingår i: Proceedings of the 10th International Modelica Conference; March 10-12; 2014; Lund; Sweden

Linköping Electronic Conference Proceedings 96:56, s. 533-542

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Publicerad: 2014-03-10

ISBN: 978-91-7519-380-9

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


Simulation studies on AC electric networks may comprehend periods of quasi-stationary operation and rapid transients. The adoption of a phasor-based approach results in high simulation efficiency; but is limited to the first of the two situations above; while for the second; time domain models are required. For system studies where both situations have to be simulated; a modelling paradigm is thus required that can join the two approaches in all the described components; and by which the simulator of an entire network can be endowed with the capability of moving back and forth from a phasor to a time domain system description automatically; taking care of the proper re-initialisations when necessary. In this paper we propose a possible solution; and apply our ideas by presenting the first nucleus of a Modelica library designed along them. We also show some simulation examples to support the validity and practical convenience of the proposal.


AC networks; phasor models; time domain models; efficient simulation.


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