基于复合干涉原理的局部放电检测光纤传感器  

Optical Fiber Sensor for Partial Discharge Detection Based on Composite Interference Principle

作　　者：郝洋 高妍[1] 张红娟[1] 王鹏飞 王宇 靳宝全 HAO Yang;GAO Yan;ZHANG Hongjuan;WANG Pengfei;WANG Yu;JIN Baoquan(College of Electrical and Power Engineering,Taiyuan University of Technology,Taiyuan Shanxi 030024,China;Key Laboratory of Advanced Transducers and Intelligent Control System,Ministry of Education and Shanxi Province,Taiyuan University of Technology,Taiyuan Shanxi 030024,China)

机构地区：[1]太原理工大学电气与动力工程学院,山西太原030024 [2]太原理工大学新型传感器与智能控制教育部与山西省重点实验室,山西太原030024

出　　处：《传感技术学报》2023年第3期373-379,共7页Chinese Journal of Sensors and Actuators

基　　金：山西省基础研究计划项目(202103021222010,20210302124599)。

摘　　要：针对基于传统干涉结构的局部放电检测光纤传感器存在参考光纤隔音处理难、不利于现场布设等问题,设计了Mach-Zehnder与Sagnac复合干涉结构的光纤传感器。本研究应用延迟光纤与直线型传感光纤结构解决了上述问题,采用3×3耦合器对光信号引入相移以增加系统的动态响应范围,并阐明了传感光纤以及延迟光纤长度对系统传感特性的影响规律。利用局部放电模拟装置进行性能测试的实验证明,所设计的局部放电检测光纤传感器具有良好的响应性能,测得局部放电信号的时域响应峰峰值为2.45 V,频率分布范围为10.62 kHz~57.73 kHz。研究表明该复合干涉结构可有效提升局部放电检测光纤传感器的检测性能,提高现场适应性。The optical fiber sensor for partial discharge detection based on traditional interference structure has some problems,such as difficult processing of sound isolation of reference optical fiber,disadvantage to field layout,etc.An optical fiber sensor with MachZehnder and Sagnac composite interference structure is designed.Delay fiber and linear sensing fiber structure are used to solve the above problems.3×3 coupler is used to increase the dynamic response range of the system.The influence of sensing fiber length and delay fiber length on the sensing performance of the system is clarified.The partial discharge simulation experiments show that the sensor has good response performance,with a peak to peak time-domain response of 2.45 V and a frequency distribution range of 10.62 kHz to 57.73 kHz.The results show that the composite interference structure can effectively improve the detection performance of the system and improve the field adaptability.

关 键 词：光纤传感器 局部放电检测 复合干涉结构 MACH-ZEHNDER SAGNAC 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TP23[自动化与计算机技术—控制科学与工程]