小波变换在小电流接地电弧故障选线中的应用  

Study of Arc-grounding Fault Selection Based on Wavelet Analysis for the Small Current Neutral Grounding System

作　　者：赵新红[1] 袁洪 车伟 景展[4] 

机构地区：[1]南京师范大学电气与自动化工程学院,南京210042 [2]国电南京自动化有限公司,南京210003 [3]苏源信息技术有限公司,南京210098 [4]南京工程学院,南京210036

出　　处：《高电压技术》2005年第10期18-20,共3页High Voltage Engineering

摘　　要：根据故障电弧引起的奇异特征,用小波奇异性检测原理大量仿真计算了故障零序电流,结果表明,小波选线算法在电弧故障时能正确选出故障线路,其原理可靠、准确且适合不同接地方式的配电网。According to the singular character, the emulation is made based on the time and frequency localization character of wavelet transform. The emulation result reveals that the method of wavelet analysis can be used to select the fault line correctly when the arc-grounding fault takes place, and it has higher reliability, accuracy and adaptability.

关 键 词：电弧故障 小波变换 故障选线 小电流接地系统 

分 类 号：TM862[电气工程—高电压与绝缘技术]