Abstract
The reliability and service continuity in the distribution grid are the basic requirements, but are threatened by various grid faults. Compared to the conventional power transformer, a smart transformer (ST) can flexibly switch between current control mode and voltage control mode, and thus has high capability on power flow control and to mesh the electric grid in secondary substations. Consequently, the ST can significantly improve the reliability and service continuity in secondary networks under grid faults. This paper presents the possible solutions to manage faults in MV and LV distribution grid, respectively, and the corresponding control strategies to improve system performances.
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