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The Method of Detecting Electric Clearance of Power Transmission Equipment Using Photogrammetry

A technology for power transmission equipment and photogrammetry, which is applied to measurement devices, photo interpretation, and the use of optical devices.

Active Publication Date: 2021-08-20
ANNING BUREAU OF ULTRA HIGH VOLTAGE TRANSMISSION
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  • Abstract
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Problems solved by technology

[0004] Its main technical disadvantage is that the density of lidar point cloud is limited, the point cloud is sparse, and there is a risk of misjudging the minimum gap, and it is difficult to effectively identify equipment components only by analyzing the point cloud outline, resulting in the inability to carry out electrical clearance analysis at key positions. Measurement
At the same time, UAVs equipped with lidar equipment are expensive and maintenance costs are high, which is not conducive to large-scale deployment of grassroots teams

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  • The Method of Detecting Electric Clearance of Power Transmission Equipment Using Photogrammetry

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Embodiment Construction

[0055]A number of embodiments of the present invention will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, for the sake of simplifying the drawings, some well-known and commonly used structures and components will be shown in a simple schematic manner in the drawings.

[0056] In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and do not refer to the meaning of order or sequence, nor are they used to limit the present invention, but are only for the purpose of distinguishing the following The components or operations described by the same technical terms are only used, but should not be understood as...

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Abstract

The present invention discloses a method for detecting electrical clearances of power transmission equipment by using photogrammetry, which includes the following steps: Step 1: route planning: use a combination of a set of rectangular orthographic flight routes and a group of elliptical circumnavigation flight routes to determine the UAV The collection route; Step 2: Collect pictures: collect the picture information of the power transmission equipment to be tested according to the route planned in step 1; Step 3: 3D modeling: use the 3D modeling software to process the collected pictures and determine the inside and outside orientation of the pictures Element; Step 4: Analysis and calculation: Select two pictures, determine the position of the measurement transmission equipment in the picture, directly analyze and calculate the measurement points selected on the picture, and obtain the electrical clearance distance of the transmission equipment. It effectively solves the problem that the measurement and calculation cannot be realized due to the sparse point cloud data of power transmission equipment when laser radar scanning is used.

Description

technical field [0001] The invention relates to the technical field of high-voltage power transmission lines, in particular to a method for detecting electric clearances of power transmission equipment by using photogrammetry. Background technique [0002] At present, when carrying out electrical clearance measurement of power transmission equipment, people usually carry measuring instruments and climb to the measurement position to carry out direct or indirect measurement. For example, for the detection of the arc angle of the ice-melting ground wire of the transmission line, before the annual anti-icing period, it is necessary to manually measure the discharge gap of the arc angle of the ice-melting ground wire on a base-by-base basis. Insufficient discharge gap will directly lead to the failure of the transmission line to melt ice later. However, manual check-in mainly has low efficiency, time-consuming and laborious, and there are risks of falling from high altitudes and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/08G01B11/00G01B11/14
CPCG01B11/002G01B11/14G01C11/08
Inventor 陶雄俊刘东甲李聪刘鸿亮东广正王安军王丁丁王叶飞
Owner ANNING BUREAU OF ULTRA HIGH VOLTAGE TRANSMISSION
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