Speakers: Matthew Sze and Patrick Zander, OMICRON electronics Corp. USA
Rotating machines, such as motors and generators, are highly important components in power generation and industrial applications. Premature failure, causing lower availability and reliability, may lead to significant economic losses due to unexpected outages and possible damage to the asset itself. To plan maintenance effectively, it is essential to have accurate condition information about when and which component needs repairing or replacing.
Among a variety of electrical tests, insulation testing are considered one of the most important test to assess the defects/ deterioration of the machines, commonly done after the machine has been manufactured, installed on-site or during periodic maintenance checks – In this workshop we focus on:
Offline diagnostic tests, such as:
- Capacitance/ power factor measurement
Variations in C and DF/PF over time are often signs of partial discharges (PD) or insulation degradation
- Partial Discharge measurement
Where the local electric field stress exceeds the local electrical strength. It causes a progressive erosion of insulation materials that can lead to failure.
Online Partial Discharge measurements/ monitoring, involving:
Which is used for periodically observe changes in PD activity
Continuously assesses PD activity over the entire service life of a machine, especially for asset with high criticality.
We are also going to discuss:
- International standard
- Interpretation of measurement results
- Measurement setup
- Advanced noise/ signal separation technique
- Case studies
- Live demonstration with stator bar