Studies on stator single-line-to-ground faults protection for a Powerformer considering the winding electromotive force distribution

Yuanyuan Wang, Xiancheng Huang,Xiangjun Zeng,Jun Liang,Xiaoqiao Chen,Yao Xu,Ying Liu,Yongsheng Guo,Yang Kong

International Journal of Electrical Power & Energy Systems（2020）

引用 3|浏览8

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摘要

•Protection scheme is based on zero-sequence fundamental voltage.•The tooth width of a Powerformer, the magnetic density distribution of the tooth, and the distribution of the electromotive force between the turns is calculated and analyzed to discriminate faulted Powerformer.•Powerformers can be detected with resistance 6 kΩ.

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关键词

Powerformer,Protection scheme,Stator single-line-to-ground faults,Electromotive force distribution,Zero-sequence fundamental voltage

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