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Lucas Sales Neves
São Carlos School of Engineering, University of São Paulo, SP
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Luís Fernando Costa Alberto
São Carlos School of Engineering, University of São Paulo, SP
Keywords:
voltage stability, load dynamics, reactive power limits, voltage limits
Abstract
This work presents a comprehensive analysis of a three-bus power system regarding voltage stability concerning operational limits and their influence in the region of safe operation. Specifically, this paper describes the effect of reactive power limits both in the distance to collapse and in the occurrence of saddle-node or limit-induced bifurcations. We also describe how the bifurcation surface changes with respect to reactive power limits, as well as the effect of voltage limits. The use of static analyses to assess voltage stability is supported by dynamic simulations. The studies performed for this test system can be easily extended to analyze real power systems.
