A Multiplexing Optical Partial Discharge Sensing System for Power Transformer Using a Single Photodetector
A Multiplexing Optical Partial Discharge Sensing System for Power Transformer Using a Single Photodetector
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DOI：
10.1109/tpwrd.2021.3053138
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发表时间：
2021-01
影响因子：
4.4
通讯作者：
Hong-yang Zhou;Guo-ming Ma;W. Qin;Meng Zhang;Qiang Zhang;Zhong-Qin Lin;Jun Jiang
中科院分区：
文献类型：
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作者：
Hong-yang Zhou;Guo-ming Ma;W. Qin;Meng Zhang;Qiang Zhang;Zhong-Qin Lin;Jun Jiang
基于单个光电探测器的光学超声传感器多路复用用于局部放电（PD）检测是一项具有挑战性的任务。提出了一种基于扫频干涉的多路复用光学超声传感系统。光学超声波传感器多路复用使用不同的载波频率来实现，所述载波频率取决于感测光纤和参考光纤之间的长度差。多点光纤超声传感只需一个光电探测器。实验结果表明，该方法可以同时检测局部放电缺陷模型产生的超声信号。然后，基于超声信号在多路复用传感器处的到达时间来精确地定位PD缺陷。
Optical ultrasonic sensor multiplexing for partial discharge (PD) detection based on a single photodetector is a challenging task. In this paper, we propose a novel multiplexed optical ultrasonic sensing system based on swept frequency interferometry. Optical ultrasonic sensor multiplexing is achieved using different carrier frequencies that depend on the length differences between the sensing fibers and the reference fiber. Only one photodetector is required for multiple-point optical fiber ultrasonic sensing. The experimental results indicate that the ultrasonic signals generated by a partial discharge defect model can be simultaneously detected. Then, the PD defect was accurately localized based on the arrival times of an ultrasonic signal at the multiplexed sensors.