摘要
为了研究典型GIS故障类型的局部放电信号特征以及利用超高频信号进行局部放电量估计,以110 kV的GIS实体部件作为实验对象,并在其中设计了几种典型的故障类型,进行了大量的实验,实验表明不同故障类型的局部放电超高频信号在波形、频谱、幅值、检波相位分布等方面存在显著的差异,同时放电特性受到气压与电压变化的影响,对于尖刺放电类型的超高频信号幅值与放电量之间线性关系最为明显,这些都为基于超高频法的GIS局部放电类型识别与放电量评估的更深入研究打下了基础.
In order to study the characteristics of partial discharge signals of typical GIS faults as well as the estimation of partial discharge quantity by using UHF method,a 110kV GIS model is set up as experimental equipment and several typical faults are placed in which.After a large number of tests,it is shown that there are significant differences among the waveform,spectrum,amplitude,and phase distribution of UHF signal for different type of discharge fault,and the discharge characteristics are affected by the change of pressure and voltage,it is also shown that the linear relationship between the amplitude and the quantity of corona discharge is the most obvious.All of these lay a foundation for the indepth study of recognition and evaluation of GIS partial discharge based on UHF method.
出处
《河北工业大学学报》
CAS
北大核心
2012年第3期1-5,共5页
Journal of Hebei University of Technology
基金
河北省应用基础研究计划重点项目(10962126D)
浙江省科技计划项目(2010C31098)
关键词
GIS
局部放电
超高频
相位分析
频谱
放电量
gas insulated switchgear
partial discharge
UHF
power phase analysis
frequency spectrum
partial discharge quantity
