低压串联电弧故障特征与检测方法分析

Low Voltage Series Arc Fault Characteristics and Test Method Analysis

提出了低压配电线路中的电弧故障是电气火灾主要诱因之一,针对电弧故障的发生发展过程进行了描述,对于电弧故障的类别及特征进行了分析,得出低压配电线路中的串联电弧故障易隐匿于线路中的特点,且难以对其进行检测。同时对低压配电线路中串联电弧故障的电压、电流波形进行了一般特性的分析,指出了串联电弧故障电压、电流波形的时域特征。最后总结分析了现有的电弧故障检测技术,得出结论是,以电压或电流波形特征为检测和判断对象的电弧故障检测方法最为可行。

This thesis put forward that the arc fault in the low-voltage distribution line is one of the main causes for e- lectrical fire, described the development process of arc fault, analyzed the types and the characteristics of arc fault and concluded that characteristics of series arc fault easily concealed in the line of the low-voltage distribution line. It is hard to detect. At the same time on the waveform of the voltage, the series are fault of low-voltage distributionlines in the cur- rent based on the analysis of the characteristics of the time domain features, pointed out the characteristics of the series arc fault voltage or current waveform. Finally, this thesis summarized and analyzed the existing arc fault detection technol- ogy, the conclusion is that the arc fault detection method which uses voltage or current waveform characteristics as judg- ment object is most feasible.