The Design of local placement detector for cable accessories based on ultrasonic technology

Abstract In the process of cable transmission, existence air gap, tip, burr and other conditions will cause partial discharge phenomenon lead to insulation aging, which can affect safety power transmission. Partial detection detect early defects accurately, timely efficiently. It is an ideal method occurrence PD by ultrasonic wave by-product because it less affected electromagnetic interference. At same time, a clamping device designed, compact in structure, easy carry high accuracy. This detector reduce degree external interference process, improve accuracy waveform, accurately identify whether occurs, alarm.