Abstract
We have developed anew method which 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 atheoretical model. It is found that the newmethod yield results which are in good agreement with the result obtained from the theoretical model for frequency response less than 0.5 Hz. And, by the result of frequency response, we can calculate sway mode of the power line in the wind. Our method also offers displacement of the sway of cable. We compared our method to the laser measurement. The difference between them was about 10cm at 255m away from the camera.
