110kV城中变UHF方式GIS局放在线监测应用

The application of the UHF mode GIS partial discharge on - line monitoring in 1 lOkV city electric substation

随着科学技术的发展，利用相关技术对运行中的电气设备运行状况实施在线监测，保证设备的安全稳定运行已成为可能。在高压组合电器（GIS）内部，绝缘介质在高电场强度作用下，发生在电极之间的未贯穿的放电，称为局部放电。通过附加于GIS外部的外置UHF局部放电测量传感器或使用已有的内部UHF传感器来获取的GIS内部的超高频局部放电信号，通过对信号采集，放大，滤波，分类，A／D转换等DSP技术应用，可实时在线的诊断分析出GIS内部的各种运行状况。

With the development of the science technology, we use relevant technology to monitor the runelectrical equipment operation situation on - line, thus it is possible to guarantee the safe operation of the device. Inside the GIS, the dielectric effected by the higher magnetic field intensity, the phenomenon that discharge happen between the electrodes is called partial discharge measure sensor added outside the GIS or by using discharge. By the extraposition UHF partial the exiting UHF sensor to acquire the UHF partial discharge signals inside the GIS, through the collection, amplification, filiter, classification and A/ D transformation or such DSP technique application to the signals, it is feasible to diagnoses and analysis the various operation situation inside the GIS on- line.