Cables will inevitably deteriorate during long-term operation, resulting in a reduction in
electrical insulation strength or even failure. Sonic detection is easy to operate and the …

High voltage cables are widely used and directly associated with the reliability and safety of
urban power transmission. However, nowadays, the ablation defect in high voltage cable …

In the process of cable transmission, the existence of air gap, tip, burr and other conditions
will cause partial discharge phenomenon and lead to cable insulation aging, which can …

Acoustic detection has features of non-contact monitoring, no influence on the operation of
tested equipment, and little interference by electromagnetic noise. In this paper, the acoustic …

For overhead distribution lines, most of the conventional measurement techniques are
manual inspection or regular preventive experiments. There are always differences between …

In recent years, power cables have been used in large quantities in urban transmission and
distribution networks, however, cable accessory faults show an increasing trend year by …

The defects in the cable will lead to a series of accidents in the power system. These
accidents will bring a series of negative effects and economic losses. At present, there are …

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 …

Acoustic analysis is a substantial method for identification of the defects in high tension
cables. High tension underground cable defects are worth detection using acoustic sensors …

Partial discharge detection with oscillatory waves and ultra-low frequency voltage as
excitation sources is the main method of status detection and diagnostic testing of …