Study on Fault Line Detection of Non-Effective Earthed Power System Based on A Novel Method

2018 5th International Conference on Advanced Composite Materials and Manufacturing Engineering

Wang, Jiulong^1 ; Gao, Liang^1 ; Guan, Chuang^1

College of Electrical and Engineering, Suihua University, Sui Hua

152061, China^1

关键词: Fault line detection;    Grounded systems;    Laboratory test;    Mathematical calculations;    MATLAB /simulink;    Research results;    Single-phase-to-earth faults;    Zero sequences;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/4/042090/pdf
DOI  :  10.1088/1757-899X/394/4/042090

来源: IOP

【 摘 要 】

In the neutral point ineffectively grounded systems, the single-phase-to-earth faults frequently occur. When single-phase-to-earth faults occur, the fault features are inconspicuous and complex for the different grid running situations. Although varieties of fault line detection methods have been presented, the results of line detection were unsatisfactory. In order to improve the reliable and accuracy line detection method, a plenty of mathematical calculations to find fault feature values, simulation experiments based on Matlab/Simulink and laboratory tests have been conducted, then a novel line detection method based on zero-sequence admittance has been put forward. The research results show this method is satisfactory.