A Fiber-Optic Sensor for Acoustic Emission Detection in a High Voltage Cable System

被引：58

作者：

Zhang, Tongzhi ^{[1
]}

Pang, Fufei ^{[1
]}

Liu, Huanhuan ^{[1
]}

Cheng, Jiajing ^{[1
]}

Lv, Longbao ^{[1
]}

Zhang, Xiaobei ^{[1
]}

Chen, Na ^{[1
]}

Wang, Tingyun ^{[1
]}

机构：

[1] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Networks, 149 Yanchang Rd, Shanghai 200072, Peoples R China

来源：

SENSORS | 2016年 / 16卷 / 12期

关键词：

fiber-optic sensors; interferometry; acoustic emission; partial discharge; GIS; PARTIAL DISCHARGE DETECTION; SAGNAC INTERFEROMETER; INSULATION; DIAGNOSTICS;

D O I：

10.3390/s16122026

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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.

引用

页数：11

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