| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6860724 | International Journal of Electrical Power & Energy Systems | 2013 | 4 Pages |
Abstract
Most faults in medium voltage (MV) distribution lines are temporary single line to ground (LG) faults. Single-phase auto reclosing (SPAR) may be used to remove the LG fault producing highly unbalanced and low voltage across the load during the reclosure dead time. The negative sequence voltage produced may cause severe over heating in three-phase induction motors. It is proposed to connect a zigzag winding grounding transformer at the remotest load bus to rebuild the three-phase voltage during the SPAR dead time. The zigzag transformer neutral should remain disconnected from the ground during normal operation.
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Authors
Kartik Prasad Basu, Syed Ahmad Hafidz, Normiza Mohamad Nor, Moleykutty George,