Research on the judging method of the T-connected transmission line fault branch

When the T-connected transmission line fails, there is a certain relationship between the phases of the three-terminal power frequency fault current, which can be applied to protect the current differential of the T-connected line. In this paper, using the MATLAB/Simulink electric power system simul...

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Bibliographic Details
Published in:AIP advances 2023-02, Vol.13 (2), p.025137-025137-7
Main Authors: Shi, Kejian, Dai, Zikuo, Tian, Ye, Chen, Qiang, Liu, Hengyu, Li, Haifeng
Format: Article
Language:English
Subjects:
Electric power systems
Electric power transmission
Frequency variation
Transmission lines
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Summary:When the T-connected transmission line fails, there is a certain relationship between the phases of the three-terminal power frequency fault current, which can be applied to protect the current differential of the T-connected line. In this paper, using the MATLAB/Simulink electric power system simulation software, when the T-connected transmission line is faulty, the power frequency fault current variation law monitored at the installation point is deeply studied, and the judgment method of the T-connected transmission line fault branch based on the power frequency current is proposed.
ISSN:2158-3226
2158-3226
DOI:10.1063/5.0134429