张宇辉,王劼妍,武东斌,吴家明.（19期已排版）基于多重分形降趋波动分析法的谐振接地系统故障选线新判据[J].电测与仪表,2017,54(20):. Zhang Yuhui,Wang Jieyan,Wu Dongbin,Wu Jiaming.A new criterion of fault line selection in resonant grounding system based on multifractal detrended flucuation analysis[J].Electrical Measurement & Instrumentation,2017,54(20):.
（19期已排版）基于多重分形降趋波动分析法的谐振接地系统故障选线新判据
A new criterion of fault line selection in resonant grounding system based on multifractal detrended flucuation analysis
The fast and accurate fault line selection of single phase to earth fault in distribution network system is of great significance to the safe operation of power network. To overcome the problem of inaccurate result of traditional fault line selection method which is caused by poor ability to resist noise and influence of the compensation degree of arc suppression coil, a new criterion of fault line selection in resonant grounding system based on multifractal detrended flucuation analysis (MFDFA) is presented in this paper. Using the boundary value ratio ζ to describe distribution features of the zero sequence current fractal parameters feeder curve H(q), the fault line selection based on the numerical difference. Simulation results show that the proposed criterion has the advantages of no filtering, strong antinoise ability, computing speed and overcome the arc suppression coil on the influence of fault line selection and fault conditions.
