A simple approach of partial discharge source location in high voltage cables.

What is it about?

This article presents a new approach of partial discharges (PD) source location in power cables. The main advantage of this approach is the detection of the propagation direction of the PD. The method provides a pattern named by the authors PD+D, which, in contrast to the well–known number, charge and phase (NQØ) pattern, graphically shows the direction of PD propagation and uses the polarity of a sensor array on top of the power cable as a reference. The signal processing technique employed, which uses the magnitudes of the positive and negative parts of each PD pulse to detect the direction of propagation, is described in detail. The proposed technique is useful for the evaluation and diagnosis of power cables, since it can identify incipient faults. The attained results that demonstrate the value of this methodology and their scope and limitations are discussed.

Featured Image

Why is it important?

A novel method that provides a pattern named by the authors PD+D, which, in contrast to the well–known number, charge and phase (NQØ) pattern, graphically shows the direction of PD propagation.

Perspectives