On-line monitoring system of fatigue damage to electric transmission line conductor by breeze vibration

Abstract

The invention discloses an on-line monitoring system of fatigue damage to an electric transmission line conductor by breeze vibration. The on-line monitoring system comprises a conductor vibration line monitoring device and a meteorological environment observation station, wherein the conductor vibration line monitoring device and the meteorological environment observation station are connected with the line, data collected by the conductor vibration line monitoring device and meteorological environment data monitored by the meteorological environment observation station in real time are sent to a site line monitoring communication base station through a wireless sensor network, subjected to digital processing by the site line monitoring communication base station and transmitted to a database server of a local monitoring center through a data remote transmission system, and after a data processing and analyzing system of the database server of the monitoring center analyzes on-line monitoring information, on-line data are provided for clients through the on-line monitoring information of the Internet. The system tests parameters such as environment temperatures, wind velocities and dynamic deflection strain on the breeze vibration condition of conductors and ground wires, so that the requirements of safe operation of the line can be met, and the system can guide the anti-vibration design, the breeze vibration real-time monitoring and condition-based maintenance of the transmission line.

Description

technical field [0001] The invention belongs to the field of electric power transmission lines, and in particular relates to an online monitoring system for fatigue damage of power transmission lines caused by breeze vibration. Background technique [0002] With the rapid development of modern technology and the accumulation of practical experience in power construction, people have learned that various types of conductor vibration can occur on transmission lines. According to the causes of conductor vibration and the form of conductor vibration, conductor vibration phenomena can be divided into There are several types: breeze vibration, sub-gap vibration, galloping, off-ice jumping, lateral impact, corona galloping, short-circuit vibration and turbulent vibration, etc. Among them, the breeze vibration of the transmission line occurs most frequently, which often leads to fatigue and broken strands of the conductor. Therefore, people pay special attention to the research on ...

AI Technical Summary

Problems solved by technology

Since accidents such as fatigue and broken strands of ground wires caused by breeze vibrations are a cumulative effect, and it is difficult to observe with the naked eye during wind vibrations, it is difficult to effectively prevent line faults caused by breeze vibrations through traditional manual regular line inspections.

[0008] Due to the battery power supply of the vibration measuring instrument during the regular inspection, the on-site measurement time is limited, continuous measurement for a long time cannot be achieved, and the measurement results lack real-time performance. There are certain limitations in understanding the vibration level and analyzing and diagnosing the cause of broken strands.

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