Study on monitoring for power transmission line galloping based on monocular vision method

摘要

Monocular vision method is used for transmission line galloping monitoring method in this paper, and feature points is traced in the transmission line dancing video and the two-dimensional pixel variation curve is extracted feature. The parameters such as distance between feature points measured and shooting dot, camera elevation and angle of the line can be measured by the recording laser rangefinder, the corresponding relation between the pixels and the actual distance can be calculated combined with the camera focal length and pixel size parameters. The transmission line galloping trajectory can be got based on the calibration coefficient and pixel curve combination, so as to realize monitoring amplitude, frequency and order of the galloping. The accuracy and applicability of method of measuring experiment is verified by dancing model test line.