Research on Combination of Partial Discharge Inspection of Cable and Accurate Position Detection of Oscillating Wave

A large number of defects left by the poor quality of the cable accessories and poor process are the main causes of the failure. Cable oscillation wave detection can accurately locate the position and discharge of partial discharge defects. However, due to the planned power outage, the complex detection system, and tedious preparations, it is not suitable for the inspection personnel to carry out large-scale and rapid inspection work. This paper proposes and studies a diagnostic combining hand-held fast inspection of partial discharge in cable with accurate location detection of oscillation wave test system. Practical application cases show that the method is more effective and efficient, because extensive live partial discharge detection can be carried out to pick the suspected cable without power interruption, and the cable with oscillation wave detection is more targeted, thus significantly improving the work efficiency.