一种新型中性点不接地系统单相接地故障信号检测方法

A New Method to detect Single Phase Earth Fault Signals at Neutral Non-grounded System

针对中性点不接地系统发生单相接地故障时能快速且准确地检测到故障信号这一问题,设计了一种基于新型沿面爬电型弧光接地电阻器的故障信号检测装置,主要介绍了新型沿面爬电型弧光电阻器的制造方法。最后,在实验室模拟单相接地故障,实现了对10k V供电线路单相接地时线路的线电压、相电压、零序电压和零序电流变化的高精度检测。

Aiming at the problem that the neutral point non-grounded system single phase earth fault can quickly and accurately detect the fault signals,designing a fault signals detection device based on a new type of surface creepage type arc grounding resistor,which introduces the manufacturing method of a new type of surface creepage type arc photo resistor the.Finally,the high accuracy detection of line voltage,phase voltage,zero sequence voltage and zero sequence current of the 10 k V power supply line is realized in the laboratory.