Power transmission line sag detection device

Abstract

The invention relates to a sag detection device for a power transmission line. The device comprises a positioning device and a monitoring device. The positioning device is arranged in the middle of apower transmission line at the lowest point of the power transmission line; a control unit, a positioning module, an inclination angle sensor, a distance measuring base station A, a power supply A anda wireless transceiving module are arranged in the positioning device; the positioning module is connected with the control unit; the inclination angle sensor is connected with the control unit; thewireless transceiving module is connected with the control unit; the power supply A provides power for the control unit and the distance measuring base station A. The monitoring device is fixedly installed at the joint of an electric pole and the power transmission line. A control chip, a wireless receiver, a network communication module, a distance measuring base station B and a power supply B are arranged in the monitoring device, the wireless receiver is connected with the control chip, the network communication module is connected with the control chip, the testing base station B is connected with the control chip, and the power supply B provides electric energy for the control chip and the distance measuring base station B. The method has the advantages of being good in detection effect, easy to use and high in accuracy.

Description

technical field [0001] The invention relates to the technical field of power transmission lines, in particular to a transmission line sag detection device. Background technique [0002] Sag is the vertical distance between the lowest point of the conductor and the line between the two suspension points when the conductors on two adjacent base poles are suspended at the same height on a flat ground. Generally, when the power transmission distance is long, due to the weight of the conductor, it will A slight sag is formed to make the wire take the shape of a catenary. The size of the sag is one of the important factors affecting the normal operation of the line. If the sag value is too small, the stress of the tensioned wire will be large. , the wires will be further stretched or even broken, especially in the rainy and snowy weather conditions in the south, the tower is prone to lodging risk, the sag value is too large, and the safety distance between the transmission line an...

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Problems solved by technology

[0002] Sag is the vertical distance between the lowest point of the conductor and the line between the two suspension points when the conductors on two adjacent base poles are suspended at the same height on a flat ground. Generally, when the power transmission distance is long, due to the weight of the conductor, it will A slight sag is formed to make the wire take the shape of a catenary. The size of the sag is one of the important factors affecting the normal operation of the line. If the sag value is too small, the stress of the tensioned wire will be large. , the wires will be further stretched or even broken, especially in the rainy and snowy weather conditions in the south, the tower is prone to lodging risk, the sag value is too large, and the safety distance between the transmission line and the ground is not enough, which affects the crossover. Safe operation, and the wire swing space is large, which will cause discharge between the wires and between the wires relative to the tower; The connecting part of the wire is damaged and broken

[0003] At present, when measuring sag in China, it is usually necessary for the surveyor to use an optical theodolite, and after professional training, he is proficient in the calculation of the sag observation angle, and also needs to be equipped with one person to carry out small-scale auxiliary measurement such as instrument height, and is affected by environmental factors. The result error is large; therefore, it is very necessary to provide a transmission line sag detection device with good detection effect, simple use and high accuracy

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