Partial discharges in transformers:

 Basic concepts, analysis and monitoring

Duration50 min.

Partial discharges are dielectric discharges in a partial area of the solid or liquid electrical insulation system under the stress of high voltage.

Partial discharges of a transformer deteriorates its insulation and can cause the transformer to fail. These failures are a problem that must be corrected as soon as possible in order to prevent further damage. Measuring these partial discharges in the field is no easy task and often requires a great effort to avoid ambient noise. Monitoring is a strategic partner in evaluating the condition of partial discharges in the field.

Subjects of the Session

  • Basic PD concepts
  • Diagram of the resolved Phase vs. the Classic Pattern of PD
  • Measurement technologies. (UHF, acoustic, electric...)
  • Technologies Comparison.
  • Monitoring.
  • Case Study, Basic concepts, analysis and monitoring.

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