Quasi-Distributed Vibration Sensing System for Transformers Using a Phase-Sensitive OFDR
Quasi-Distributed Vibration Sensing System for Transformers Using a Phase-Sensitive OFDR
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DOI：
10.1109/tie.2021.3139188
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发表时间：
2022-10-01
影响因子：
7.7
通讯作者：
Yan, Chao
中科院分区：
文献类型：
--
作者：
Qin, Wei-Qi;Ma, Guo-Ming;Yan, Chao
提出了一种基于相敏光频域反射计的准分布式振动传感系统，用于电力变压器油箱的振动监测。与传统加速度计相比，该系统具有较高的抗电磁干扰能力。本文介绍了定位和振动传感的原理。然后，详细说明了系统布局和振动信号解调过程。然后，对系统的振动传感性能进行了实验标定。最后，在实验室环境和现场进行了振动监测试验，验证了系统的振动检测能力。该系统可用于测量油箱振动的时域、频域和空间分布，可用于电力变压器机械状态的在线监测。
A quasi-distributed vibration sensing system based on a phase-sensitive optical frequency-domain reflectometer is proposed for monitoring the vibration of power transformer oil tanks. Compared with traditional accelerometers, the proposed system has high electromagnetic interference immunity. In this article, the principles of localization and vibration sensing are introduced. Then, the system layout and the vibration signal demodulation process are explained in detail. Next, the vibration sensing performance of the system is calibrated experimentally. Finally, vibration monitoring tests are carried out in a laboratory environment and on-site to verify the vibration detection capability of the system. The proposed system can be used to measure the time domain, frequency domain, and spatial distribution of oil tank vibration, which can be used for the online monitoring of the mechanical state of power transformers.