瓷瓶对特高频局部放电检测影响的研究

Research on the Influence of Porcelain Bottle on UHF Partial Discharge Detection

变电站设备特高频局部放电检测和定位主要是针对GIS、主变、开关柜等设备,在敞开式变电站对广泛的一次设备应用较为有限,敞开式一次设备内部特高频局部放电信号是否能被有效检测亟待研究。采用特高频信号发生器模拟4种典型的局部放电,研究瓷瓶对特高频检测放电信号检测的影响,并依据试验结果提出了瓷瓶内部4种典型的特高频局部放电信号的有效检测距离。

UHF partial discharge detection and positioning of substation equipment are mainly aimed at GIS,transformer,switchgear and other equipment.The application of a wide range of primary equipment in open substation is relatively limited.Whether UHF partial discharge signal in open primary equipment can be effectively detected needs to be studied.UHF signal generator is used to simulate four typical partial discharges,and the influence of porcelain bottle on UHF discharge signal detection is studied.Based on the test results,the effective detection distances of four typical UHF partial discharge signals inside the porcelain bottle are proposed.