Overhead transmission line breeze vibration measurement device based on angle method

Abstract

The invention provides an overhead transmission line breeze vibration measurement device based on an angle method. The device comprises a housing and a line clamp which are fixed to a guide line to be detected; a cavity is arranged in the housing and is provided with a control module, a communication module and a power supply module inside, and the communication module and the power supply module are connected to the control module; the line clamp is further provided with a measuring unit spacing from the outlet of the line clamp for xb; the measuring unit comprises a tank fixedly connected to the line clamp, a vibration sensor arranged in the tank, a transmission arm and a rolling wheel; the rolling wheel is rotatably arranged at the lower end of the transmission arm and contacts with the guide line to be measured, the upper end of the transmission arm is connected with a measuring shaft of the vibration sensor in a rigidity manner, and a control calculating module of the vibration sensor is connected to a control module of the housing. The measurement device performs nondestructive measurement and non-contact measurement when the guide line is in the dynamic bending strain, the problem of fatigue is avoided, long-time operating capability is provided, the anti-interference capability is strong, and the measurement is reliable.

Description

technical field [0001] The invention relates to the field of on-line monitoring and state evaluation of overhead transmission lines, in particular to a device for measuring breeze vibration of overhead transmission lines based on an angle method. Background technique [0002] The large span of the line is an important part of the transmission line and plays an important role in the line operation. Various types of conductor vibration can occur on overhead transmission lines. According to the cause of conductor vibration and the form of conductor vibration, the phenomenon of conductor vibration can be divided into the following types: breeze vibration, sub-gap vibration, galloping, deicing jump , lateral impact, corona galloping, short-circuit vibration and turbulent vibration, etc. In the field of overhead transmission lines, the breeze vibration phenomenon occurs most frequently, and the breeze vibration exceeding the allowable amplitude often occurs on the overhead transm...

AI Technical Summary

Problems solved by technology

However, this measurement device has the following defects: it is a destructive measurement, that is, the strain gauge has the problem of fatigue life, and under the action of constant amplitude alternating strain, the strain gauge will be fatigued and damaged when it works continuously, resulting in the failure of the measurement device

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