This project is developing and demonstrating low-cost RF sensors to assess conductors and compression connectors on overhead transmission lines. The sensors measure the following parameters:
- Three axes of inclination
- Vibration in three axes (see the project summary for the Vibration Sensor Suite)
Depending on the application, the sensors are configured with different algorithms and data transmission rates. They harvest their power from the current flowing in the transmission line, although they have an onboard battery as back-up. The sensors are designed to be installed under energized conditions using hotsticks. Applications include the assessment of compression connectors (splices and dead-ends).
Continual improvement of the sensors is underway. Areas of improvement include increasing the security of the RF transmission, lowering the current required for power harvesting, refinement of algorithms, and improvement in reliability and manufacturability.
Project Phases: Development and Demonstration
Sensors that measure temperature and current have been developed and are being demonstrated in numerous locations. Sensors that measure inclination have been developed and tested with the first demonstration underway. Refinement will continue. Sensors that measure vibration are currently under development and testing. A solar-powered base station has been developed, which can collect the data from sensors, record weather parameters, and transmit the data to a central server.
|Task||Due Date||Completed||% Complete|
|Development of Temperature and Current Measurement||2008||100%|
|Development of Inclination Measurement||12/2011||80%|
|Development of Vibration Measurement||6/2011||50%|