基于光纤光栅传感器的变压器储油柜油位计研究  

Research on Oil Level Gauge of Transformer Oil Conservator Based on Fiber Bragg Grating Sensor

作　　者：周莹梦 张晓丽[1] 连帅彬[1] 江莺[2] ZHOU Yingmeng;ZHANG Xiaoli;LIAN Shuaibin;JIANG Ying(College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China;College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210016, China)

机构地区：[1]信阳师范学院物理电子工程学院,河南信阳464000 [2]南京林业大学机械电子工程学院,江苏南京210016

出　　处：《信阳师范学院学报（自然科学版）》2019年第2期307-311,共5页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(61603324;61501392;51505231);河南省科技攻关计划项目(142102210482);河南省教育厅科学技术研究重点项目(13A510770);信阳师范学院"南湖学者奖励计划"青年项目

摘　　要：常规电力变压器储油柜油位采用电信号传感器进行监测,传感器信号易受变压器高电压、大电流等复杂电磁环境的干扰,针对上述不足,研究了一种基于光纤光栅传感器的变压器储油柜油位计,即光纤光栅油位计.该光纤光栅油位计主要由光纤光栅传感器和C型弹簧管组成,利用光纤光栅对应变的传感特性、液体压强与液位高度的关系实现储油柜油位的监测,是一种能有效提高变压器稳定运行的非电量监测方法.结果表明:光纤光栅油位计中心波长偏移量与储油柜油位变化呈良好的线性关系,线性拟合度均值为0.9996,灵敏度均值为4.7472 pm/dm,能够满足变压器储油柜油位的监测要求.Conventional transformer oil level is monitored by electric signal sensor, and the sensor signals are susceptible to interference from transformer high voltage, high current and other complex electromagnetic environment. For the above shortcomings, a transformer oil level gauge based on fiber Bragg grating sensors was proposed. That was fiber bragg grating oil level gauge, which was mainly composed of a fiber bragg grating sensor and a C-type spring tube. And the oil level for transformer conservators was monitored by the strain characteristic of the fiber bragg grating and the relationship between the liquid pressure and the height of the liquid level. It was a non-electricity monitoring method to improve the stable operation of transformers. The experimental results showed that the center wavelength deviation of the fiber bragg grating oil level gauge was linear with the change of the oil level for the conservator, the average linearity fitting was 0.9996 and the average sensitivity was 4.7472 pm/dm, which was filled the monitoring requirements of the oil level in conservator.

关 键 词：光纤光栅传感器 C型弹簧管 变压器 油位监测 

分 类 号：TH741[机械工程—光学工程]