铁路附近输电塔振动分析与在线监测技术研究

IF 1.6 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Instrumentation & Measurement Magazine Pub Date : 2023-11-01 DOI:10.1109/mim.2023.10292619

Xinbo Huang, Zhicheng Liu, Long Zhao, Peng Yuan, Ye Zhang

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引用次数: 0

摘要

输电线路是世界各国电网系统的关键设施。输电塔是输电线路的重要组成部分。振动响应分析可以应用于结构健康监测，因为环境因素和外界激励都会对模态的准确性产生一定的影响。新疆广芳线126塔靠近列车轨道，列车通过时将产生外部激励，因此研究列车对塔的影响具有重要意义。本研究对输电塔进行了动力响应试验。为了识别塔架在不同状态下的模态参数，采用塔架模态自动识别方法对振动加速度信号进行处理。发现列车激励会激发出高阶模态。随着列车的通过，塔模会逐渐减小，第三和第八固有频率变化明显。列车激励对输电塔运行模式的影响导致监测装置对输电塔结构健康状况的误判。列车通过输电塔后，如果输电塔未因列车励磁而永久性损坏，在一定时间后结构仍可恢复到原来的状态。为此，设计并优化了广芳线塔振动监测装置，以避免电力安全事故的发生。

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Research on Vibration Analysis and Online Monitoring Technology of Transmission Tower Near Railway

The transmission line is the key facility of power grid systems all over the world. The transmission tower is an important part of the transmission line. Vibration response analysis can be applied to structural health monitoring, since environmental factors and external excitation will have a certain impact on the accuracy of mode. Tower 126 of the Xinjiang Guangfang line is close to the train track, and external excitation will be generated when the train passes, so it is important to study the influence of the train on the tower. This study conducts dynamic response experiments on the transmission tower. To identify the modal parameters of the tower under different states, an automatic modal identification method of the tower is used to process the vibration acceleration signal. It is found that train excitation will stimulate high order modes. The tower mode will decrease as the train passes, and the third and eighth natural frequencies change obviously. The influence of train excitation on the mode of transmission tower leads to the misjudgment of the structural health of the transmission tower by the monitoring device. After the train passes through the transmission tower, if the tower is not permanently damaged due to train excitation, the structure can still be restored to its original state after a certain time. Therefore, the authors design and optimize the vibration monitoring device of the Guangfang line tower to avoid power safety accidents.

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来源期刊

IEEE Instrumentation & Measurement Magazine 工程技术-工程：电子与电气

CiteScore

4.20

自引率

4.80%

发文量

147

审稿时长

>12 weeks

期刊介绍： IEEE Instrumentation & Measurement Magazine is a bimonthly publication. It publishes in February, April, June, August, October, and December of each year. The magazine covers a wide variety of topics in instrumentation, measurement, and systems that measure or instrument equipment or other systems. The magazine has the goal of providing readable introductions and overviews of technology in instrumentation and measurement to a wide engineering audience. It does this through articles, tutorials, columns, and departments. Its goal is to cross disciplines to encourage further research and development in instrumentation and measurement.