Manuscript.pdf (844.96 kB)
Download fileA Three-Phase Sensitivity-Based Approach for Smooth Line-Switching in Islanded Microgrids
preprint
posted on 2022-01-19, 23:29 authored by Evangelos PompodakisEvangelos Pompodakis, Georgios C. Kryonidis, Minas AlexiadisThis paper deals with a new line-switching
method that facilitates the network reconfiguration of islanded microgrids. Its
distinct features include the ability to handle network asymmetries and the
minimization of the line current during the switching action. This is attained
by developing a sensitive-based three-phase model predictive method to
determine the operating set-points of the distributed generators (DGs) that
minimize the current of the candidate line participating in the switching
action. These set-points correspond to the positive-sequence powers as well as
the negative- and zero-sequence currents of all DGs. Furthermore, the network
constraints such as voltage limits and power limits of DGs are always
satisfied. Simulations are performed in a balanced 33-bus islanded network as
well as in the unbalanced IEEE 8500-node network to evaluate the performance of
the proposed method.