title: A Fiber-Optic Sensor for Acoustic Emission Detection in a High Voltage Cable System.
abstract: We have proposed and demonstrated a Michelson interferometer-based fiber sensor for detecting acoustic emission generated from the partial discharge (PD) of the accessories of a high-voltage cable system. The developed sensor head is integrated with a compact and relatively high sensitivity cylindrical elastomer. Such a sensor has a broadband frequency response and a relatively high sensitivity in a harsh environment under a high-voltage electric field. The design and fabrication of the sensor head integrated with the cylindrical elastomer is described, and a series of experiments was conducted to evaluate the sensing performance. The experimental results demonstrate that the sensitivity of our developed sensor for acoustic detection of partial discharges is 1.7 rad / ( m ⋅ Pa ) . A high frequency response up to 150 kHz is achieved. Moreover, the relatively high sensitivity for the detection of PD is verified in both the laboratory environment and gas insulated switchgear. The obtained results show the great potential application of a Michelson interferometer-based fiber sensor integrated with a cylindrical elastomer for in-situ monitoring high-voltage cable accessories for safety work.
authors.affiliation: Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, 149 Yanchang Road, Shanghai 200072, China. clove@shu.edu.cn.
authors.forename: Tongzhi
authors.initials: T
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, 149 Yanchang Road, Shanghai 200072, China. ffpang@shu.edu.cn.
authors.forename: Fufei
authors.initials: F
authors.lastname: Pang
authors.affiliation: Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, 149 Yanchang Road, Shanghai 200072, China. hhliu@shu.edu.cn.
authors.forename: Huanhuan
authors.initials: H
authors.lastname: Liu
authors.affiliation: Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, 149 Yanchang Road, Shanghai 200072, China. jiajingcheng@i.shu.edu.cn.
authors.forename: Jiajing
authors.initials: J
authors.lastname: Cheng
authors.affiliation: Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, 149 Yanchang Road, Shanghai 200072, China. lvlongbao@i.shu.edu.cn.
authors.forename: Longbao
authors.initials: L
authors.lastname: Lv
authors.affiliation: Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, 149 Yanchang Road, Shanghai 200072, China. xbzhang@shu.edu.cn.
authors.forename: Xiaobei
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, 149 Yanchang Road, Shanghai 200072, China. na.chen@shu.edu.cn.
authors.forename: Na
authors.initials: N
authors.lastname: Chen
authors.affiliation: Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, 149 Yanchang Road, Shanghai 200072, China. tywang@shu.edu.cn.
authors.forename: Tingyun
authors.initials: T
authors.lastname: Wang
keywords: GIS; acoustic emission; fiber-optic sensors; interferometry; partial discharge