Automatic sag detection and tension stringing system for overhead transmission line

Abstract

The invention discloses an automatic sag detection and tension stringing system for an overhead transmission line. The automatic sag detection and tension stringing system comprises: a wireless remotecontrol trolley that is arranged on a conductor to be tested, wherein the wireless remote control trolley is provided with a satellite receiving device used for receiving position information sent bya satellite positioning system, and the wireless remote control trolley is provided with a wireless communication system; a tension stringing actuator for taking up and paying off the conductor; a control station located on the ground, wherein the control station emits a movement instruction and transmits the movement instruction to the wireless remote control trolley through the wireless communication system to control the wireless remote control trolley to move to a test position, the wireless remote control trolley obtains the position information and transmits the position information tothe control station, the control station processes the position information at the position to be tested to calculate the sag value, compares the calculated sag value with a target sag in the controlstation and sends a tension stringing command to control the tension stringing actuator for taking up and paying off the conductor. The automatic sag detection and tension stringing system achieve thereal-time automatic online detection and automatic tension stringing of the conductor sag, and can be used for more refined re-detection of the conductor which is subjected to tension stringing at aconstruction site.

Description

technical field [0001] The invention relates to an automatic sag detection and line tightening system for overhead transmission lines, belonging to the technical field of electric power construction engineering. Background technique [0002] Overhead transmission lines are the main artery of the power industry and an important part of the power system. The transmission line conductor sags between adjacent towers to form an arc curve, and the sag is called sag. The size of the sag is related to the span, height difference, wire length, wire weight, and stress on the wire. Natural factors such as temperature, wind, ice and snow also affect it. It is an important process to ensure the construction quality to accurately observe the sag of the overhead transmission line and guide the line tightening operation until the target sag is achieved. [0003] The basic theory on which the conductor sag calculation of overhead lines is based is very mature. Since the distance between t...

AI Technical Summary

Problems solved by technology

On the one hand, artificial sag observation is easily restricted by terrain, visibility conditions, etc., and the observation results directly depend on human factors such as the observer's experience and knowledge, instrument operation skills, and rigor of the operation process, lacking consistency and authority; On the one hand, the manual tightening operation not only requires multiple personnel, but also consumes physical strength and has certain operational risks, and sometimes requires manual tower climbing operations

The existing sag detection and thread tightening process has high requirements on the detection environment conditions, and in the case of poor visibility, manual observation of sag and thread tightening operations cannot be carried out; manual thread tightening requires more operators and is more difficult. The experience requirements for observers are relatively high, and the requirements for on-site safety management are relatively high; sag observers need to undergo systematic training to master the working methods of manual observation. At present, there is a shortage of experienced sag observers in the industry, and manual The observed sag data lacks objectivity and consistency

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