On-line monitoring method for monitoring aeolian vibration of power transmission line

A transmission line and vibration monitoring technology, which is applied to measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve problems such as poor reliability, and achieve the effect of improving reliability and high spatial resolution

Active Publication Date: 2016-01-20
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID +1
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Problems solved by technology

[0005] Based on this, it is necessary to provide an online monitoring method for breeze vibration of transmission lines in view of the technical problem of poor reliability of the above-mentioned existing online monitoring method for breeze vibration of transmission lines

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  • On-line monitoring method for monitoring aeolian vibration of power transmission line
  • On-line monitoring method for monitoring aeolian vibration of power transmission line
  • On-line monitoring method for monitoring aeolian vibration of power transmission line

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Embodiment Construction

[0021] In order to further illustrate the technical means adopted by the present invention and the achieved effects, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments.

[0022] Such as figure 1 as shown, figure 1 It is a flowchart of an on-line monitoring method for breeze vibration of a transmission line according to an embodiment of the present invention.

[0023] An on-line monitoring method for breeze vibration of a power transmission line may include the following steps:

[0024] Step S1: Send a first optical signal to a plurality of breeze vibration monitoring devices installed on the power transmission line, and the breeze vibration monitoring device uses a fiber grating to receive the first light signal and reflect the second light signal; wherein, the power transmission A plurality of monitoring objects corresponding to the breeze vibration monitorin...

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Abstract

The invention relates to an on-line monitoring method for monitoring the aeolian vibration of a power transmission line. The method comprises the steps of transmitting first optical signals to multiple aeolian vibration monitoring devices arranged on a power transmission line, wherein the aeolian vibration monitoring devices receive the above first optical signals and reflect second optical signals by means of fiber-bragg gratings; according to the second optical signals and the first optical signals, calculating the amplitudes and the frequencies of monitoring objects so as to further obtain the total evaluation value of each monitoring object through the calculating process and finally obtain parameters on the degree of fatigue induced by the aeolian vibration of the power transmission line; and determining the aeolian vibration state of the power transmission line according to the parameters on the degree of fatigue. Based on the sensing mode of fiber-bragg gratings, the above method is higher in spatial resolution. Meanwhile, based on the comprehensive analysis on the total evaluation values of all monitoring object arranged on the power transmission line, the parameters on the degree of fatigue of the power transmission line can be obtained. According to the parameters on the degree of fatigue, the aeolian vibration state of the power transmission line can be accurately determined. Therefore, the on-line monitoring reliability for the aeolian vibration state of the power transmission line is improved.

Description

technical field [0001] The invention relates to the technical field of safety control of power transmission lines, in particular to an online monitoring method for breeze vibration of power transmission lines. Background technique [0002] On overhead transmission lines, various types of vibrations such as breeze vibration, sub-gap vibration, galloping, ice-off jumping, lateral impact, corona galloping and short-circuit vibration often occur. Among these vibration types, "breeze vibration" The most common and frequent occurrence. Breeze vibration of overhead transmission lines means that when a steady wind speed of about 0.5-10m / s blows laterally to the transmission line, alternating up and down vortices will be generated on the leeward side of the transmission line, causing alternating up and down forces to act on the transmission line. On the line, the vertical vibration of the transmission line is generated. When the frequency of the vortex is consistent with the natura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00
Inventor 张鸣何红太裴冠荣詹清华何通李恒真王成华陈道品屈勇朱文滔刘高张俊刘宝强张虎
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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