Spatial distance measurement method at alternating fixed points of conductor in long span
A technology of spatial distance and measurement method, which is applied in the direction of line-of-sight measurement, measuring device, measuring distance, etc. It can solve the problems of difficult spatial distance at fixed points between phases and the inability to set up a total station, etc., and achieve a small amount of calculation and simple operation. Effect
Active Publication Date: 2015-06-03
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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However, when the transmission line crosses special areas such as rivers and valleys, the total station cannot be set up at the fixed point, and it is very difficult to obtain the spatial distance between the fixed points, and the traditional method is no longer applicable
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[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0030] Step 1: Calculate the plane coordinates of the suspension point of the tower position by using the principle of space forward intersection:
[0031] 1. As attached figure 1 , 2 As shown, point C is the wire suspension point 1, and D is the wire suspension point 2. Set up the total station at two points A and B. The coordinates of points A and B are known, and then observe the angles of the wire hanging points C and D , and obtain the azimuth angle, the angle values ∠CAB, ∠ABC, ∠DAB, ∠ABD can be obtained through simple calculation by using the azimuth angle between the stand site and the hanging line point. The plane coordinates of hanging point C and D are calculated as follows:
[0032] x D = x A tan α ...
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The invention discloses a spatial distance measurement method at alternating fixed points of a conductor in long span. The method comprises the following steps: setting a total station through known coordinate points, performing angle observation on a hanging point, and computing tower position suspension point coordinates according to a space intersection principle; computing target point plane coordinates by using the plane coordinates of the hanging point and the horizontal distance from the target point to the tower position; inversely computing an azimuth angle of a connecting line of the two known coordinate points and the target point according to the known coordinate points and the plane coordinate of the target point; and repeating the steps, computing parameters of another target point, and computing the conductor space distance according to the space coordinates of the two target points. Through the method, the precise spatial distance at alternating fixed points of the conductor can be obtained.
Description
technical field [0001] The invention relates to a method for measuring the spatial distance at a fixed point between phases of conducting wires at a large span. Background technique [0002] In the wind disaster control of transmission lines and transmission line inspection work, it is an important basic work to obtain accurate spatial distance between fixed points between conductors. The traditional method is that the operator erects the total station directly below the vertical line to obtain space. distance. However, when the transmission line crosses special areas such as rivers and valleys, the total station cannot be set up at the fixed point, and it is very difficult to obtain the spatial distance between the fixed points, and the traditional method is no longer applicable. Contents of the invention [0003] In order to solve the above-mentioned problems, the present invention proposes a method for measuring the spatial distance between conductors at a large span a...
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IPC IPC(8): G01C3/22
CPCG01C3/22
Inventor 常增亮麻超
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP