Protection of Microgrids During Utility Voltage Sags

  title={Protection of Microgrids During Utility Voltage Sags},
  author={D. Mahinda Vilathgamuwa and Poh Chiang Loh and Yun Wei Li},
  journal={IEEE Transactions on Industrial Electronics},
Microgrids are systems with clusters of microgenerators, which are installed for distributed power generation. When interfaced to the utility grid, microgrids are exposed to common utility power-quality disturbances. In particular, during utility-voltage sags, large line currents can flow along distribution feeders connecting the micro- and utility grids. To limit this flow of large line currents and, hence, protect the microgrids, this paper proposes two current-limiting algorithms, namely… CONTINUE READING
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