摘要
针对宁夏电网两起气体绝缘金属封闭开关设备(Gas Insulated Switchgear,GIS)运行时出现异常噪声问题,通过多种带电测试手段(超声法、特高频法、SF6气体成分法)对异常噪声的GIS设备进行分析与对比。结果表明:由于GIS设备中钢体的磁滞伸缩,使得在工频周期的交变磁场改变原有已导磁的GIS磁化状态,引起了异常的噪声,带电测试表明此噪声不会给GIS设备的运行带来危害。
Aiming at two cases of abnormal noises signal appearing in the operation of GIS（Gas Insulated Switchgear）equipment,by various electric on-line test ways such as ultrasonic method, ultrahigh frequency method,and SF6 gas component analysis method,analyzes and compares GIS equipment appearing abnormal noise. The analysis result shows that due to the magnetic hysteresis of steel body in GIS equipment,the alternating magnetic field in a power frequency cycle change magnetic state of GIS which has the permeability,caused the abnormal noise. The electric on-line test shows that the noise will not bring harm to the operation of the GIS equipment.
出处
《宁夏电力》
2015年第2期37-40,45,共5页
Ningxia Electric Power
关键词
GIS
带电测试
异常噪声
GIS
electric on-line test
abnormal noise
