基于MIMU的输电线路振动分析

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (11) : 230-236.

论文

基于MIMU的输电线路振动分析

杨金显，杨闯1，李双磊2，蒋志涛1，王鹏飞1

作者信息 +

Vibration analysis of transmission lines based on MIMU

YANG Jinxian1 , YANG Chuang1 , LI Shuanglei2 , JIANG Zhitao1 , WANG Pengfei1

Author information +

文章历史 +

摘要

为了对输电线路振动进行有效阻尼控制，提出了一种惯性测量参数的时间序列分段模式的输电线路振动分析方法。首先设计一种MIMU测量节点，采用一定长度的弹性杆进行信号物理放大和防磁干扰，并对采集的输电线路振动信息进行AR-Kalman滤波处理；然后把处理过的数据分为不同数据段，静止时数据作为基准段，把后采集的数据段与基准段进行变异分析，计算变异度，预测输电线路振动幅度；对相邻两段数据进行相似度量，计算相似度，预测输电线路振动频率，分析振动趋势；最后设计了振动台、转台和输电线路模拟实验，采集不同振动幅度及频率的MIMU信号，通过幅度、频率及趋势的综合分析，获取本地区输电线路振动特性，实验结果表明，处理数据结果能够反映输电线路振动变化规律，说明输电线路振动分析方法是有效的，可为输电线路的振动阻尼控制器设计提供参数。

Abstract

In order to effectively reduce and control vibration of transmission lines, a transmission line vibration analysis method was proposed with a time series piecewise model based on parameters’ inertial measurement. Firstly, a MIMU (micro inertial measurement unit) measurement node was designed with the MIMU fixed on a certain length elastic rod fastened on a transmission line for amplifying the MIMU signal physically and decreasing magnetic interference, and the collected MIMU signals were processed with the AR-Kalman filtering algorithm. Then the processed MIMU data were divided into different data segments with the static MIMU data as the benchmark segment. The transmission line vibration amplitudes were predicted by analyzing the variability between the subsequent segments and the benchmark one, and its vibration frequency was predicted by calculating the similarity of the adjacent two segments. At last, a rotating table test, a shaking-table one and a transmission line simulation one were designed to acquire MIMU signals with different amplitudes and frequencies, and gain the vibration characteristics of the local area’s transmission lines through the comprehensive analysis of amplitudes, frequencies and trends. The test results showed that the proposed analysis method is effective, and it can provide parameters for the design of transmission lines’ vibration damping controllers.

导出引用

杨金显,杨闯1，李双磊2，蒋志涛1，王鹏飞1. 基于MIMU的输电线路振动分析[J]. 振动与冲击, 2018, 37(11): 230-236

YANG Jinxian1,YANG Chuang1,LI Shuanglei2,JIANG Zhitao1,WANG Pengfei1. Vibration analysis of transmission lines based on MIMU[J]. Journal of Vibration and Shock, 2018, 37(11): 230-236

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