Calculation method of transmission conductor galloping amplitude and frequency based on video monitoring technology

Abstract

The invention discloses a method for calculating the galloping amplitude and frequency of a power transmission wire based on the video monitoring technology, which belongs to the video image processing technology. Specifically, it is based on the movement trajectory of the transmission wire when it is dancing. By processing the video image obtained by the camera, through image grayscale, filtering, histogram equalization, segmentation and image matching, the wire target image has the lowest dancing, The highest position map, to obtain the galloping characteristics of the transmission wire, and then calculate the galloping amplitude and frequency of the transmission wire to fully grasp the galloping behavior and maximum galloping amplitude of the wire within the span; this method overcomes the inability of the existing galloping monitoring system The deficiencies of effectively obtaining the galloping behavior and the maximum galloping amplitude of the wires within the span make the measurement results more accurate and effective.

Description

technical field [0001] The invention belongs to the video image processing technology, in particular to a method for calculating the galloping amplitude and frequency of a transmission wire based on the video monitoring technology. Specifically, the movement trajectory of the transmission wire during galloping is the core, and the galloping characteristics of the transmission wire are obtained by processing the video images obtained by the camera, and the galloping characteristics of the wire at any position within the span are obtained through the motion trajectory. technical background [0002] Under the current background of rapid economic development in our country, the whole society has higher and higher requirements for power reliability, and the economic losses caused by power accidents are becoming more and more serious. As an important part of the power grid, the safe operation of the transmission line directly determines the reliability of the power grid operation....

AI Technical Summary

Problems solved by technology

According to different monitoring methods, it can be divided into fixed and portable monitoring equipment: the fixed monitoring device is the galloping online monitoring system. The camera device is fixed at a certain position on the tower to obtain the entire video image of the wire galloping, and the monitoring is obtained by processing the video image. The galloping characteristics of different points within the range; limited by the monitoring range of the camera device, this method can only obtain the galloping form of some wires within the visible range at present, and the wires in the span are long, so it is impossible to obtain the galloping status of the entire span wire. It is also impossible to effectively obtain the galloping severity of the wires within the span

Portable monitoring equipment is to monitor any position of the galloping wire through the camera device carried by the staff, and obtain the galloping behavior of the wire at the monitoring point by analyzing the monitoring image; although the portable device can effectively obtain the galloping behavior of the wire at any position within the span, However, the monitoring of wire galloping depends on manual selection of monitoring points. If the most serious point of galloping cannot be effectively selected for monitoring, the severity of galloping of the wires within the span cannot be obtained.

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