Abstract
This paper proposes an Unscented Transformation-based Probabilistic Power Flow (UT-PPF) for unbalanced three-phase islanded microgrids. The UT-PPF approach considers the three-phase voltages expressed in polar coordinates, distributed generators’ droop control methods, and loads’ voltage and frequency dependence. Uncertainties of active and reactive power loads and wind generation are adequately treated by the UT-PPF, which has easy implementation and provides accurate results. Computational simulations are carried out using the 33-bus and 69-bus islanded microgrids. The proposed approach is promising compared with Monte Carlo Simulation regarding the accuracy and computational time criteria.
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