Partial Discharge Detection and Measurement System for Variable Speed Electric Machine Windings
Abstract
Partial discharge (PD) is a localized discharge that occurs within insulation defects underhigh voltage stress. Successive PD will" gradually degrade the insulation of power equipment suchas electric machine windings, transmission and distribution lines, and pow""er cables, and willeventually cause complete insulation breakdown. Therefore, it is extremely beneficial to detectPD as early as p"ossible for medium voltage and high voltage systems so that the insulation defectscan be identified and mitigated to prevent severe power equipment failures.This project proposes to set up a hardware system to detect the PD events in mediumvoltage electric mach"ine windings. During PD events, energy is released in the form of dischargecurrents, light, and sound. Therefore, electrical, optic""al, and acoustic sensors can be used to detectPD. This proposal selects the following three instruments to detect and measure PD in" machinewindings simultaneously: 1) the Iris Power PDAlert (electrical detection); 2) the Ofil DayCorSuperb-XD Corona Scope (optic"al detection), 3) the Sonotec Sonaphone M Ultrasonic Detector(acoustic detection). Each instrument is based on a different detectio"n method and has its ownadvantages and disadvantages. The three instruments can complement each other and provide animproved understanding of PD and insulation degradation in variable speed machine windings.The proposed PD detection system will be used in an on#NAME?(SiC) based power electronics affect the insulation degradation and breakdown of medium voltageelectric machine windings. The full proposal also introduces broader research topics that willsignificantly benefit from the proposed PD detection and measurement system.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 29, 2017
- Source ID
- N000141712828
Entities
People
- Julia Zhang
Organizations
- Office of Naval Research
- Oregon State University
- United States Navy