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Analysis on Transformer Protection Potential Fault Trip Resulting from CT’s Wrong Connection
Nina Liu, Kai Qiao, Yongqiang Xie, Jie Hui
146 - 152
10.3233/AERD220019
Research Article
Advances in Energy Research and Development
Volume 1: New Energy and Future Energy Systems
Abstract

On account of Main transformer CT (current transformer)’s wrong connection leading to additional circuit, differential loop’s circuit is calculated according to transformer’s load status. Detail analysis is made. In conclusion, potential fault trip exists in RCS-978E stable ratio differential protection. Measures are brought forward to avoid fault trip, so that reliability of transformer protection is improved.

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