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Publication Number: CEC-500-2008-020
Abstract:
The bird strike indicator is an impulse-based vibration sensing and recording tool to detect bird strikes on aerial cables. This project was designed to perform the first field trial of the bird strike indicator on an energized power line. Three power line spans were instrumented with 30 bird strike indicators for parts of two successive years: 2006 and 2007. Ground searches were performed to relate detected carcasses with recorded strikes, and in 2007 visual observations were added to improve the likelihood of getting visual verification of bird collisions detected by the bird strike indicator. In 2006, 71 collisions were recorded and 35 were successfully correlated with ground searches. The bird strike indicators recorded additional collisions that could not be correlated with carcasses found by the surveyors, indicating that some of the carcasses might have fallen outside the search area. In 2006 some bird collisions were likely missed by malfunctioning sensors. During the 2007 field trials, improvements were made to the design of the bird strike indicator sensors based on the lessons learned from 2006. There were 154 detected bird collisions, and three were visually verified. Most collisions (68 percent) were recorded with the top wires (the overhead static wires). There were no false bird collision recordings by sensors during the visual observation period of 446 hours. Keywords: Avian collisions, power lines, BSI, bird strike indicator, bird searches, accelerometers, vibration recorder
Author(s): EDM International Inc., Arun Pandey, Richard Harness, Misti Kae Schriner Commission Division: Technology Systems Division - R&D, PIER (500)
Office/Program: PIER: Public Interest Energy Research
PIER Program Area: Renewable Energy Technologies
Date Report Completed: May 2008
Date On Line:
05/23/2008
Acrobat PDF File Size: 79 pages,
kilobytes
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