Power transmission line modeling method used for net distance measurement and distance measurement device thereof

Abstract

The invention discloses a power transmission line modeling method used for net distance measurement and a distance measurement device thereof. The modeling method comprises the following steps that 1) the distance measurement device is installed below a suspension string, an endpoint O is determined, an auxiliary distance measurement device is installed on a lead to be measured, two endpoints A and B are determined through movement of the auxiliary distance measurement device, and length L1 of a line segment OA, length L2 of a line segment OB, an inclined angle theta1 between the line segment OA and the horizontal plane and an inclined angle theta2 of the line segment OB and the horizontal plane are respectively measured; 2) a rectangular plane coordinate system with the point O acting as the origin of coordinates is established, and the coordinates of point A and the coordinates of point B are substituted into a parabolic model formula y=x2+mx+n of the lead to be measured so that parameters m and n are obtained; and 3) the auxiliary distance measurement device acquires position information of the lead to be measured and forms the position information and the parameters m and n of the parabolic model into a data frame to be wirelessly transmitted to a remote server. According to the method, the modeling process is simplified, the working efficiency is high and the operating risk is low.

Description

technical field [0001] The invention relates to a modeling method for an overhead transmission line, in particular to a method for simulating the sag distribution of the transmission line curve and measuring the clearance distance of crossing objects under the line. Background technique [0002] The transmission line has strict data requirements for the clearance distance of the crossing objects below. The sag of different points on the line is different, and the clearance distance of the crossing objects below is also different. Existing measuring method is to measure distance with total station, calculate after angle measurement or use volume, 100-meter rope, heavy hammer to measure for high-altitude workers. Using a total station measurement, the measurement accuracy of the clearance distance depends on the measurement accuracy of the horizontal distance from the setting point to the crossing point, but it is difficult to accurately locate the crossing point; the measurem...

AI Technical Summary

Problems solved by technology

Using a total station measurement, the measurement accuracy of the clearance distance depends on the measurement accuracy of the horizontal distance from the setting point to the crossing point, but it is difficult to accurately locate the crossing point; the measurement of high-altitude personnel has high operational risks and is affected by weather conditions

The existing wireless measurement method for the clearance distance of transmission lines needs to establish the catenary model equation of the transmission line. The algorithm of this method is complex, and it is only used as a theoretical model. This modeling method is rarely used in practical applications, and its practicability is not strong.

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