Online Partial Discharge Monitoring of Rotating Electrical Machines

The performance and reliability of rotating electrical machines are critical for power generation and running critical processes in industrial applications. However, performance and reliability can be compromised over time due to the thermal, electrical, ambient and mechanical stresses motors and generators are continuously subjected to when in operation.

Partial discharge (PD) activity is an indication of weak spots in the insulation that can cause failure and damage to motors and generators and can be continuously monitored over time, either on a temporary or permanent basis, to efficiently plan maintenance and prevent failure.