光通信技术2024，Vol.48Issue(6)：68-74,7.DOI:10.13921/j.cnki.issn1002-5561.2024.06.013
面向变压器绕组复合光纤状态监测的BOTDR扫频策略研究
Research on BOTDR scanning strategy for transformer winding composite fiber state monitoring
摘要
Abstract
To improve the accuracy of Brillouin optical time domain reflectometry(BOTDR)in monitoring the state of trans-former winding composite optical fibers,a BOTDR sweep range selection strategy is proposed.This strategy generates Brillouin spectra with different signal-to-noise ratios,sweep frequency ranges,and sweep frequency asymmetry coefficients through simu-lation,and uses the pseudo Voigt model spectral fitting algorithm to calculate the Brillouin frequency shift.Meanwhile,the influ-ence of three factors,namely signal-to-noise ratio,sweep frequency range,and sweep frequency asymmetry coefficient,on the ac-curacy of Brillouin frequency shift extraction is studied.The experimental results show that when the scanning range is symmetri-cal around the Brillouin frequency shift,the error reaches its minimum.In the case of a fixed number of sweep frequency points,as the sweep frequency range increases,the frequency shift error first decreases and then increases.When the sweep frequency range is one linewidth larger than the amplitude of the Brillouin frequency shift change,the error reaches its minimum value.关键词
变压器/光纤/布里渊光时域反射计/温度和应变/扫频范围/布里渊频移Key words
transformer/optical fiber/Brillouin optical time-domain reflectometry/temperature and strain/frequency scanning range/Brillouin frequency shift分类
信息技术与安全科学引用本文复制引用
王勇,马迅,贾旭超,刘凯,陈永辉..面向变压器绕组复合光纤状态监测的BOTDR扫频策略研究[J].光通信技术,2024,48(6):68-74,7.基金项目
河北省自然科学基金项目(批准号:E2020502010)资助 （批准号:E2020502010）
中央高校基本科研业务费项目(批准号:2019MS090)资助. （批准号:2019MS090）
