Coordinate calibration method for power transmission line towers
A technology of transmission lines and calibration methods, applied in directions such as fault locations, can solve problems such as inconvenience of transportation, measurement result errors, measurement instrument errors, etc., and achieve the effect of improving work efficiency, reducing workload, and reducing workload.
Active Publication Date: 2014-04-30
云南电力试验研究院(集团)有限公司
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Problems solved by technology
At present, the design positioning accuracy of the lightning positioning system is 0.5km ~ 1km. For this reason, in order to improve the efficiency of detection and the accuracy of positioning, the method of adding detection stations is generally adopted. Will hit the tower, resulting in lightning failure
The coordinates of transmission line towers are generally measured by relevant personnel after the lightning positioning system is completed. However, the transmission line corridor passes through hillsides and crosses valleys. In the process of measuring the latitude and longitude of the tower, in addition to the error caused by the measuring instrument, there will be a large error in the measurement result due to various other reasons
Since the distance represented by latitude and longitude is very long, an error of one second in the measurement results will cause the tower to be far away from the actual position, and this error is difficult to find when using general drawing software such as excel and origin to draw the entire line, so It is necessary to find an effective technical means and method to find the towers with large errors in the measurement coordinates of transmission line towers, and to calibrate them
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[0024] The technical solution of the present invention will be further described below through the embodiments and in conjunction with the accompanying drawings.
[0025] See figure 1 , the first step is to obtain the transmission line tower parameters. Through the tower schedule in the line design data, it is obtained that there are a total of 100 base towers in the line, and the span between all towers and the previous base tower can be obtained, that is, the running span, and the rotation angle of the tower number corresponding to the tower, directly Use drawing software such as origin to draw the above coordinates, and the drawing result is as follows figure 2 As shown, it is basically impossible to find towers with wrong coordinates.
[0026] The second step is to calculate the measuring span according to the longitude measured by the tower and the latitude measured by the tower, and compare it with the operating span to determine the tower to be calibrated;
[0027] ...
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The invention discloses a coordinate calibration method for power transmission line towers. The method includes that firstly, relative parameters of a power transmission line tower are obtained, then measuring span is calculated according to a tower measuring coordinate, and comparison is performed at operating span. When an error exceeds a permissible error, a coordinate of a base tower is in error probably. Coordinate calibration is performed on towers required to be calibrated by judging whether incorrect towers are one singe base tower, two adjacent base towers or continuous towers, combining size and signs of the errors to determine the towers which need to be calibrated, finally combining corner conditions of the towers and the operating span, and using a measuring tool in geographic information software. The method can find the towers with large errors in a power transmission line measuring coordinate conveniently, reduces workload that people go to a field to measure a tower coordinate again, and effectively improves positioning accuracy of a lightning positioning system and authenticity of line lightning parameters.
Description
technical field [0001] The invention relates to a method for calibrating the coordinates of a transmission line tower, in particular to a method for calibrating the coordinates of a transmission line tower used in a lightning positioning system, which is suitable for the query of the lightning falling in the lightning positioning system and the statistics of the lightning parameters of the line, and belongs to the lightning protection technology of the power system field. Background technique [0002] According to the operating experience of high-voltage transmission lines at home and abroad, lightning strikes are the main cause of tripping of high-voltage transmission lines. In order to find the fault point in time, reduce the workload of line inspection, truly reflect the lightning situation of the transmission line, and ensure the reliable operation of the power grid, the lightning location system has been developed rapidly. When using the lightning location system for l...
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IPC IPC(8): G01R31/08
Inventor 马御棠王磊赵现平马仪陈磊侯亚非申元黄然雷园园周仿荣
Owner 云南电力试验研究院(集团)有限公司