Partial discharge (PD) measurements have long been used to assess the condition of the electrical insulation in motors and generators rated 3.3 kV and above. There are many ways to measure PD during the normal service of the motor or generator. The drawback with many methods of measuring PD in the stator windings is that measurements are influenced by electrical interference signals from poor electrical connections, tracking from insulators, discharges from connected terminations and other types of defects. The result can lead to false positives of stator winding problems, reducing the confidence in PD analysis.
Resource Category: Electrical Discharges
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Electrical engineers should carefully consider the best practice to ensure the reliability of the plant and safety of the personnel during and after the lockdown period.
Introduction | Partial Discharges vs Partial Arcing
Electrical discharges (ED) in MV power circuits are (1) Partial Discharges (PD) and (2) Partial Arcing (PA). Partial Arcing is a term coined by Martec to explain multiple findings which exhibit some common characteristics of PD.
What is Partial Discharge?
Partial Discharge could appear in any point of the insulation system as electrical stress, by exceeding the dielectric strength.
Technical Discussions and Reliability Solutions
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