李梦滔,张国志,万子逸,周涛,胡昌斌,万航,周凯.改进电磁耦合法在振荡波局部放电试验中的应用[J].电测与仪表,2018,55(19):97-100. LI Mengtao,ZHANG Guozhi,WAN Ziyi,ZHOU Tao,HU Changbin,WAN Hang,Zhou Kai.The Application of Improved Electromagnetic Coupling Method in Partial Discharge Test Based on Oscillating Wave Voltage[J].Electrical Measurement & Instrumentation,2018,55(19):97-100.
改进电磁耦合法在振荡波局部放电试验中的应用
The Application of Improved Electromagnetic Coupling Method in Partial Discharge Test Based on Oscillating Wave Voltage
An oscillation wave test system (OWTS) can carry high capacity load, and was generally used in long cables test. To improve the sensitivity of OWTS measurement system effectively, the limitations of typical impulse current detection method when used in long cables is analyzed theoretically, and an improved electromagnetic coupling method is present for OWTS. To compare the measure precision of two methods, different quantity of electric charge is applied in measure circuit. To analyze the characteristic of measurement signal in two method, partial discharge based on oscillating wave voltage is measured by using two methods. From the result, the improved electromagnetic coupling method has higher sensitivity, and more difficult to be interference by low frequency signal.
