多重分形在小电流接地系统单相接地故障选线中的应用  

Discrimination of Faulty Line with Single Phase Fault in Small Current Neutral Grounding Power System Based on Multi-Fractal Spectrum

作　　者：张庆超[1] 张真[1] 杨金飞[1] 

机构地区：[1]天津大学电气与自动化工程学院,300072

出　　处：《电气应用》2007年第8期29-31,73,共4页Electrotechnical Application

摘　　要：利用多重分形理论对经消弧线圈接地小电流系统单相接地故障母线处的零序电流波形分析,通过比较反映信号几何结构特征的多重分形谱,来区别故障线路与正常线路。研究结果表明,该方法能够反映信号整体特征,可靠性高,抗干扰能力强。Multi-fractal spectrum of zero sequence currents waveform of small current neutral grounding power system are computed. Multi-fractal spectrum reflecting geometry characters of signals are compared to discriminate normal line and faulty line. From the research results, the method is reliable and robust.

关 键 词：多重分形谱 消弧线圈 小电流接地系统 故障选线 

分 类 号：TM862[电气工程—高电压与绝缘技术]