Wireless Acoustic Emission Sensors
EPRI is performing field demonstrations of wireless acoustic sensors to assess the benefits for diagnostics of substation apparatus. The wireless aspects allow for sensor deployments in areas otherwise inaccessible.
The acoustic emission aspects allow for detection of internal partial discharge activity without the need to modify the apparatus (i.e. the acoustic emission sensors simply attach to the outer enclosure). The field demonstrations to-date have focused on current transformers.
Project Phase: Demonstration
The project presently has ten wireless acoustic emission sensors in a 765kV substation. The sensors are harvesting solar energy. The sensor system has been recently upgraded to improve range and robustness.
|Task||Due Date||Completed||% Complete|
|Short-term field demonstrations on 69kV CTs and PTs||Yes||100%|
|Long-term field demonstrations on 765kV CTs||12/2011||80%|