Measurement method for lead/ground wire icing thickness of transmission line based on video variation analysis

A transmission line and difference analysis technology, which is applied to the exploration of measuring devices, instruments, optical devices, etc., can solve problems such as the inability to achieve quantitative analysis of icing, and achieve great social significance, simple principle, and easy operation

Active Publication Date: 2011-11-23
西安金源电气股份有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for measuring the ice coating thickness of the transmission line conduction / ground wire based on video difference analysis, which solves the problem that the existing transmission line video monitoring device can only judge the ice coating by human eyes and cannot realize the quantification of the ice coating lack of analysis

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  • Measurement method for lead/ground wire icing thickness of transmission line based on video variation analysis
  • Measurement method for lead/ground wire icing thickness of transmission line based on video variation analysis
  • Measurement method for lead/ground wire icing thickness of transmission line based on video variation analysis

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Embodiment Construction

[0041] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] The present invention is based on the video difference analysis method for measuring the ice coating thickness of the transmission line conductor / ground wire, such as Figure 6 As shown, the specific steps are as follows:

[0043] Step 1: Collect the image signal of the transmission line through the camera installed on the tower, and transmit it to the monitoring center in real time through wireless communication; the monitoring center obtains the digital image of the monitored transmission line site, and obtains the monitoring target image;

[0044] Step 2: Calibrate the camera, calculate the internal and external parameters of the camera, and determine the corresponding relationship between the known points in the world coordinate system and their projection images; the characteristics of the calibration board are: the black rectangu...

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Abstract

The invention discloses a measurement method for lead / groundwire icing thickness of a transmission line based on video variation analysis. The method comprises the following steps: shooting an on-site image through a video monitoring device, automatically obtaining the boundaries of the transmission line before and after icing by using image processing technologies including camera calibration, image graying, image enhancement, image segmentation and the like, and further quantificationally calculating the lead / ground wire icing thickness; and when the lead / ground wire icing thickness exceedsa specified safety range, automatically alarming to remind related departments to take deicing measures timely. Since a lead / ground wire icing image is directly used to solve the lead / ground wire icing thickness, the method disclosed by the invention has the advantages of simple principle, higher accuracy and higher reliability, is convenient for operation, and can make up disadvantages of the traditional method,. Therefore a new means is provided for safety detection of transmission lines, a great amount of manpower resource cost can be reduced, the use efficiency of the on-line monitoring system is improved, and the measurement method has great practical significance for ensuring the safe operation of an electric power system.

Description

technical field [0001] The invention belongs to the technical field of digital video image processing and on-line monitoring of transmission lines, and relates to a method for measuring the thickness of ice coating on transmission lines, in particular to a method for measuring the thickness of ice coating on conductive / ground wires of transmission lines based on video difference analysis. Background technique [0002] Affected by the macro-climate, micro-topography and micro-meteorological conditions, ice disaster accidents occur frequently in China, and China is one of the countries most severely affected by icing disasters. The direct cause of the accidents caused by icing is large-scale long-term low temperature, rain, snow and freezing weather, but at the same time, it also reflects that the power grid is not capable of resisting severe weather and lacks the means to grasp the operation of the line in the first place. Therefore, icing of transmission lines The research o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/06G01V8/10
Inventor 黄新波冯玲陶保震李文静
Owner 西安金源电气股份有限公司
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