Analysis of Wind-Induced Vibrations on HVTL Conductors Using Wireless Sensors.
Analysis of Wind-Induced Vibrations on HVTL Conductors Using Wireless Sensors.
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DOI：
10.3390/s22218165
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发表时间：
2022-10-25
期刊：
影响因子：
--
通讯作者：
Diana G
中科院分区：
文献类型：
--
作者：
Zanelli F;Mauri M;Castelli-Dezza F;Tarsitano D;Manenti A;Diana G
在能源加速向可再生能源转型的世界，高压输电线路是电力输送的战略基础设施。作为细长的低阻尼结构，高压输电导线会受到风致振动的影响，这种振动可能会导致导线和其他部件出现严重的疲劳问题。振动监测可能是评估线路安全水平和执行基于状态的维护活动的关键活动。这项工作提出了一种基于对物理现象和智能技术设备的知识的创新方法。设计了一种基于MEMS加速度计和能量采集技术的无线监测系统，用于现场测量fymax参数，该参数是一个疲劳指标，可用于识别不同的风致现象和评估导线的应变水平。在加拿大的一条输电线路上进行了现场测试，以检查系统的效率和收集重要数据。发现了涡旋脱落引起的振动，最大值为fymax=50m/S，没有观察到亚跨振荡和舞动。结果表明，该方法可以检测到不同的风致疲劳现象，并为开发合适的计算导线剩余疲劳寿命的软件铺平了道路。
In a world accelerating the energy transition towards renewable sources, high voltage transmission lines represent strategic infrastructure for power delivery. Being slender and low-damped structures, HVTL conductors are affected by wind-induced vibrations that can lead to severe fatigue issues in conductors and other components. Vibration monitoring could represent a key activity to assess the safety level of the line and perform condition-based maintenance activities. This work proposes an innovative approach based on the knowledge of the physical phenomena and smart technological devices. A wireless monitoring system based on MEMS accelerometers and energy harvesting techniques has been designed to measure the fymax parameter in the field, which represents a fatigue indicator useful to identify the different wind-induced phenomena and assess the conductors’ strain level. A field test on a Canadian transmission line was used in the check of the efficiency of the system and collection of significant data. Vibrations due to vortex shedding were identified with a maximum value of fymax = 50 m/s, while subspan oscillation and galloping were not observed. We show the novel method can detect the different wind-induced phenomena and pave the way to the development of suitable software able to compute a conductor’s residual fatigue life.
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DOI：
10.1016/j.jweia.2021.104878
发表时间：
2022-01-01
影响因子：
4.8
作者：
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影响因子：
4.4
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影响因子：
4.4
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