Sag calculating method for power line segment from parallel viewing angle
A calculation method and sag technology, applied in the field of sag calculation, can solve the problems of complex camera installation, inability to observe power lines from a vertical perspective, and harsh environmental requirements, and achieve the effect of easy implementation and application.
Inactive Publication Date: 2016-12-14
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +2
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Problems solved by technology
[0004] In the current sag calculation method based on image processing technology, the vertical view method is used to extract the power line, and the two endpoints and the sag point of the power line are taken out from the image to calculate the sag. However, the installation of the camera is complicated and the environment is demanding. In most cases Inability to observe power lines from a vertical perspective
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[0040] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0041] like figure 1 As shown, a sag calculation method under the parallel view of the electric power line segment includes the following steps:
[0042] Step 1, image acquisition and initialization processing.
[0043] The process of image acquisition and initialization processing is as follows:
[0044] S11, acquiring real-time video data of the substation video monitoring system;
[0045] S12: Obtain a certain frame of picture in the real-time video;
[0046] S13: Process the frame of pictures, and crop the edges;
[0047] S14: Perform grayscale processing on the cropped image, and convert it into a grayscale image.
[0048] Step 2, binarize the initialized image.
[0049] The process ...
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The invention discloses a sag calculating method for a power line segment from a parallel viewing angle. The method comprises the following steps: 1. acquiring and initially processing a picture; 2. performing binaryzation processing on the initially processed picture; 3. analyzing a flexible rope structure idea by referring to a catenary segment method; when the distance between pole towers is constant, selecting the secant value of a curve inclination of a top rope as an independent parameter, extracting the independent parameter, and restoring the catenary curve; 4. performing sag calculation according to the catenary curve. The sag calculation of the power line is realized from the parallel viewing angle by extracting the power line from the parallel viewing angle.
Description
technical field [0001] The invention relates to a sag calculation method under a parallel view angle of a power line segment, belonging to the field of power equipment installation. Background technique [0002] Sag is one of the important parameters in line design and operation and maintenance, which determines the tightness of the overhead line, and the size of the sag directly affects the safe and stable operation of the line. The sag should meet the stress under any meteorological conditions in the current operation does not exceed the maximum value, and meet the seismic conditions, so that the distance between any point of the wire to the ground, water surface, and the spanned object meets the design requirements, ensuring the safe operation of the line. parameter. [0003] In order to maintain the operating safety of overhead lines in compliance with the regulations, the design department requires that different overhead line temperatures be erected during constructio...
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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 姚楠吴曦蔡越
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST