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Drawing method for winter icing thickness distribution of field electric transmission line

A technology of transmission line and ice thickness, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc.

Active Publication Date: 2015-03-25
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD +1
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  • Abstract
  • Description
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Problems solved by technology

[0006] The technical problem to be solved by the present invention: provide a method for drawing the winter ice thickness distribution of field power transmission lines to solve the problem of winter icing of field power transmission lines in the prior art Because the drawing of thickness distribution does not consider the characteristics of ice coating and does not divide the topography of ice-covered areas, it is difficult to effectively reflect the impact of micro-topographic changes in mountainous areas on the icing of transmission line conductors when used in the drawing of ice-covered distribution maps in mountainous areas, resulting in the final The accuracy of the ice thickness map is poor and other problems

Method used

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  • Drawing method for winter icing thickness distribution of field electric transmission line
  • Drawing method for winter icing thickness distribution of field electric transmission line
  • Drawing method for winter icing thickness distribution of field electric transmission line

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Embodiment Construction

[0040] Step 2. Acquisition, processing and summarization of historical meteorological data and field icing data, and collect historical meteorological data and field icing data within the survey area, according to the requirements of "Technical Regulations for Meteorological Survey of Electric Power Engineering" (DL / T5158-2012) , converted to the actual icing thickness of transmission line conductors, and the converted icing thickness is divided into return periods using the Pearson-III probability distribution, and the supplementary sequence is back-calculated based on historical meteorological data, and the meteorological elements of icing include Analyze and process cloud and mist water content, droplet spectrum, temperature, wind direction, wind speed and DEM data to obtain the characteristics and distribution of icing on conductors;

[0041] Step 3. Spatial geographic regression analysis. The elements described in step 2 are vectorized according to the actual sampling coor...

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Abstract

The invention discloses a drawing method for winter icing thickness distribution of a field electric transmission line. The drawing method comprises the steps of 1, aerophotography measurement, 2, collecting, processing and summarizing of historical meteorological data and field icing data, 3, space geography regression analysis, 4, establishment and correction of a lead icing distribution calculating model and 5, mountain land electric transmission line icing thickness distribution diagram drawing. The drawing method solves the problem of poor accuracy of the icing thickness diagram finally caused by the fact that in the prior art, the icing characteristics are not considered and the landform of an icing area is not classified in the winter icing thickness distribution drawing of the field electric transmission line, the data are used in the drawing of the icing thickness distribution diagram of the mountain land area, and consequently the influence of the microtopography change of a mountain land on icing of a lead of the electric transmission line is hard to be effectively reflected.

Description

technical field [0001] The invention belongs to the technical field of ice coating monitoring of power transmission lines, in particular to a method for drawing ice thickness distribution of field power transmission lines in winter. Background technique [0002] my country's aerial photogrammetry and remote sensing technology has developed particularly rapidly in the past 20 years. From the previous single aerial photography major to the development of multidisciplinary integration. After the integration of remote sensing, geographic information system, and global positioning system, the scope of application of photogrammetry is wider; due to the combination of remote sensing, geographic information system, and global positioning system, photogrammetry has entered the era of full digital photogrammetry. In the past, photogrammetry was often used for 1:500-1:5000 scale map mapping, but it was rarely used for the surveying and mapping of ground object attribute changes in met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 罗洪彭赤黄欢任曦曹双和汤旻
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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