Accurate measurement method of cross-span distance of overhead transmission line under complex conditions

An overhead transmission line, precise measurement technology, applied in the direction of measuring devices, instruments, etc., can solve the problems of inability to measure with high precision, high safety risks, and many precautions

Active Publication Date: 2018-06-15
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is crossed as a live line during a power outage operation, there will be induction electricity, and the safety risk will be greater. If the equal potential enters the electric field for live work, various safety measures for live work must be taken, and there are many risk factors;
[0006] (2) Operators can only use it when there is a phase conductor directly above the cross-phase conductor, and the scope of application is limited
However, there is still a problem that the theodolite requires more detailed measurement, and there are many precautions when measuring, otherwise errors will occur, and the problem that it cannot be used for high-precision measurement

Method used

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  • Accurate measurement method of cross-span distance of overhead transmission line under complex conditions
  • Accurate measurement method of cross-span distance of overhead transmission line under complex conditions
  • Accurate measurement method of cross-span distance of overhead transmission line under complex conditions

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Embodiment Construction

[0070] The present invention will be further explained below in conjunction with the drawings.

[0071] Such as Figure 1~4 As shown, the method for accurately measuring the cross-span distance of overhead transmission lines in complex situations is characterized by: including method one and method two;

[0072] Method 1: The following steps:

[0073] S01, select two observation reference points directly below the crossing line and the crossed object vertically, the two observation reference points of the crossing line are numbered A and B from left to right, and the two observation reference points of the crossed object The point numbers are C and D from right to left, set the theodolite position number as point O, and the crossing point of the connection between A and B and the connection between C and D is point M; then the theodolite can be measured: OA = La; OB =Lb;OC=Lc;OD=Ld;∠AOB=α 1 ;∠AOC=α 2 ;∠AOD=α 3 ;

[0074] S02, establish a two-dimensional rectangular coordinate system...

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Abstract

The invention discloses a method for accurately measuring the cross-span distance of an overhead power transmission line under complex conditions, which is characterized in that: method one includes the following steps: S01, two observation reference points are respectively selected vertically directly below the cross-cross line and the cross-over object, The two observation reference points of the intersecting line are numbered A and B from left to right, and the two observation reference points of the crossed object are numbered C and D from right to left. Let the theodolite position number be O point, A and B The crossing point between the connecting line and the connecting line C and D is point M; S02, establish a two-dimensional Cartesian coordinate system X0Y. The present invention provides a method for accurately measuring cross-span distances of overhead transmission lines under complex conditions. Through the principle of conversion from polar coordinates to rectangular coordinate systems and the principle of mutual conversion between different rectangular coordinate systems in the same plane, the cross-span orientation can be found and observed. To the cross-span point, realize the accurate measurement of the cross-span distance.

Description

Technical field [0001] The invention relates to a method for accurately measuring the cross-span distance of an overhead transmission line under complex conditions, and in particular to a situation where it is difficult for a surveyor to reach the area directly below the crossing point or the situation where a tower ruler (prism) is difficult to observe directly under the crossing point , When it is difficult to observe the crossover point, it is a method to accurately measure the crossover distance of overhead transmission lines. Background technique [0002] With the rapid development of society and economy, the demand for electric energy continues to increase. As the most important transmission channel of electric energy, overhead transmission lines of various voltage levels are connected to rivers, power lines, telecommunications lines, railways, expressways (roads), and aerial ropeways. , Houses, trees and other crossover conditions are increasing, and the environment of rou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/16
Inventor 崔艳东闫广清谢伟
Owner STATE GRID CORP OF CHINA
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