Small-signal stability assessment of active distribution networks with dynamic loads
Roy, N.K., Pota, H.R. and Orchi, T.F. 2012, Small-signal stability assessment of active distribution networks with dynamic loads, in AUPEC 2012 : Green smart grid systems : Proceedings of the Australasian Universities Power Engineering 2012 Conference, IEEE, Piscataway, N.J., pp. 1-7.
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Title
Small-signal stability assessment of active distribution networks with dynamic loads
Australasian Universities Power Engineering Conference
Start page
1
End page
7
Total pages
7
Publisher
IEEE
Place of publication
Piscataway, N.J.
Summary
This paper investigates small-signal stability of a distribution system with distributed generator and induction motor load, as a dynamic element. The analysis is carried out over a distribution test system with different types of induction motor loads. The system is linearised by the perturbation method. Eigenvalues and participation factors are calculated to see the modal interaction of the system. The study indicates that load voltage dynamics significantly influence the damping of a newly identified voltage mode. This mode has frequency of oscillation between the electromechanical and subsynchronous oscillation of power systems. To justify the validity of the modal analysis time domain simulation is also carried out. Finally, significant parameters of the system that affect the damping and frequency of the oscillation are identified.
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