EPRI Structure Vibration Monitor: Use case

The problem:

Power utilities often face the challenge of maintaining the structural integrity of cross-arms and other structural members, which can be compromised by aeolian vibrations. These vibrations can lead to loosening bolts and hardware, causing potential failures and safety hazards. The need to verify new designs and evaluate mitigation methods to prevent such issues has driven research into effective monitoring solutions.

RF monitoring approach:

The EPRI Structure Vibration RF Monitor was installed on cross-arms and structure members to measure vibrations. The device was attached using different mounting options depending on the specific application. It transmitted real-time data on the magnitude, frequency, and orientation of vibrations to a central receiver, allowing for continuous monitoring and analysis without extensive cabling.

Lessons learnt:

From the research, it was learned that the RF monitors provided valuable insights into the behavior of structural members under aeolian vibration. The data helped in identifying critical points where bolts and hardware were likely to loosen. This information was crucial in verifying the effectiveness of new designs and in developing more robust mitigation methods to enhance structural integrity.

Status:

Currently, the EPRI Structure Vibration RF Monitors are being used in various ongoing projects to monitor and analyze structural vibrations. These projects aim to further refine the technology and expand its applications. The latest research focuses on improving the accuracy and reliability of the monitors, as well as exploring new attachment options to enhance their versatility and effectiveness.