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

A distance measuring device and transmission line technology, which is applied to simulate the sag distribution of transmission line curves, and is used to measure the clearance distance of crossing objects under the line. problems, to achieve the effect of good engineering practical value, high work efficiency and low operation risk

Active Publication Date: 2016-09-21
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +2
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  • Abstract
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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.

Method used

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

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Embodiment Construction

[0021] like figure 1 As shown, the wires to be measured are connected between two adjacent tower poles. The distance measuring device is installed at the wire suspension at the lower end of the suspension string. The point of the distance measuring device is the determined end point O. On the wire, move from the starting position to a point different from the starting position, and determine the end point A and the end point B respectively.

[0022] like figure 2 As shown in the figure, a transmission line modeling auxiliary distance measuring device for clear distance measurement includes a housing, a fixed module moving on the wire to be tested and a control module located inside the housing, the fixed module and the housing are fixedly installed, and the control module It includes a microcontroller, an inclination sensor, a power supply module, a GPRS wireless communication module, a GPS module and a power supply module. The microcontroller is connected to the inclination...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/02
CPCG01B21/02
Inventor 刘志强张福友张益李小英亓超
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER
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