Abstract
AbstractWe have developed a new method that can measure movement of overhead power lines in the wind. This method uses images from an ITV camera system. The sway of the power line is videotaped and analyzed. Its measured frequency response to wind is compared to a theoretical model. It is found that the new method yields results that are in good agreement with those obtained from the theoretical model for frequency response less than 0.5 Hz. With the result of frequency response, we can calculate the sway mode of the power line in the wind. Our method also offers displacement of the sway of the cable. We compared our method to the laser measurement, and found a difference of about 10 cm at 255 m from the camera. © 2001 Scripta Technica, Electr Eng Jpn, 137(4): 18–24, 2001
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