GIL放电性故障的振动检测法研究

Research on the Vibration Detection Method for Discharge Faults in Gas-Insulated Transmission Lines(GIL)

由于GIL在生产制作及运输的过程中,内部会产生部分缺陷,导致运行时局部放电故障,并伴随一定的振动和声音信号异常。当GIL出现故障时,不仅会对设备本身产生严重的损坏,还会对电力系统的稳定运行带来威胁。研究了一种基于振动信号进行GIL放电性故障的检测方法,该方法能够较精确地检测GIL放电性故障具体单元及部位。分析了GIL局部放电故障状态时振动信号的特征,通过对模拟实验和现场试验中采集的信号进行处理与识别,优化了识别方法,能够实现对GIL是否发生了局部放电故障进行准确有效的判断。

During the production and transportation of Gas-Insulated Transmission Lines(GIL),internal defects may occur,leading to localized partial discharge faults during operation,accompanied by abnormal vibration and sound signals.When GIL malfunctions,it not only causes serious damage to the equipment itself but also poses a threat to the stable operation of the power system.This paper studies a method for detecting partial discharge faults in GIL based on vibration signals,which can accurately identify specific units and locations of the faults.The characteristics of vibration signals in GIL localized partial discharge fault states are analyzed.By processing and identifying signals collected from simulated experiments and on-site tests,the identification method has been optimized,enabling accurate and effective determination of whether GIL has experienced localized partial discharge faults.