[1]皮昊书,韦盈释,陈金锋,等.基于光纤传感技术的电缆接头局部放电监测[J].深圳大学学报理工版,2020,37(1):57-62.[doi:10.3724/SP.J.1249.2020.01057]
 PI Haoshu,WEI Yingshi,CHEN Jinfeng,et al.Partial discharge monitoring of cable joint based on fiber sensing technology[J].Journal of Shenzhen University Science and Engineering,2020,37(1):57-62.[doi:10.3724/SP.J.1249.2020.01057]
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基于光纤传感技术的电缆接头局部放电监测()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第37卷
期数:
2020年第1期
页码:
57-62
栏目:
光电工程
出版日期:
2020-01-08

文章信息/Info

Title:
Partial discharge monitoring of cable joint based on fiber sensing technology
文章编号:
202001009
作者:
皮昊书韦盈释陈金锋陈子涵吴中马楠
深圳供电局有限公司福田供电局,广东深圳 518031
Author(s):
PI Haoshu WEI Yingshi CHEN Jinfeng CHEN Zihan WU Zhong and MA Nan
Futian Power Supply Bureau, Shenzhen Power Supply Bureau Co. Ltd., Shenzhen 518031, Guangdong Province, P.R.China
关键词:
光纤传感相敏光时域反射仪弱光纤光栅干涉信号电缆接头局部放电
Keywords:
fiber optics sensors phase-sensitive optical time-domain reflectometry (φ-OTDR) weak fiber Bragg grating interference signal cable joint partial discharge
分类号:
TP211.6;TP23
DOI:
10.3724/SP.J.1249.2020.01057
文献标志码:
A
摘要:
通过对电缆中间接头局部放电现象的监测可以及时判断其中间接头的绝缘状况,并及早发现绝缘缺陷,降低配电网电缆故障率.提出一种基于相敏光时域反射仪(phase-sensitive optical time-domain reflectometry, φ-OTDR)的分布式光纤传感系统,以相邻弱光栅间的光纤作为传感单元,通过检测相邻弱光纤光栅的干涉信号,可以得到电缆中间接头局部放电声波振动信号的频率、相位和位置等相关信息,从而判断局部放电的强弱及放电位置.实验模拟电缆中间接头局部放电情形,搭建电缆接头局部放电光纤监测系统.在10 kV电压等级下进行实时监测实验,成功检测出局部放电产生的声波信号,其频谱主要分布于9~15 kHz.将传感光纤与电缆复合,或沿电缆铺设,能够做到实时的分布式在线监测.
Abstract:
Monitoring the partial discharge of the intermediate joint of cable can help to judge the insulation condition in time and find latent defects in cable joints as early as possible, so as to reduce occurrence of insulation fault. In this paper, we propose a distributed acoustic sensing (DAS) system based on the enhanced phase-sensitive optical time-domain reflectometry (φ-OTDR) technology. By detecting and analyzing the interference signals between the two adjacent weak fiber Bragg gratings (FBGs) in optical array which is paved along with cable, we can obtain the frequencies, phases, and positions of acoustic signals generated by partial discharge of the cable joint, and then determine the strength and location of partial discharge. In our experiment, by simulating partial discharge of cable intermediate connector in laboratory environment at the voltage of 10 kV, the fiber optic monitoring system is set up,and the acoustic signal by partial discharge is successfully detected. Experimental results show that the proposed DAS system can accurately distinguish weak signal with different frequency and have better frequency response from 9 kHz to 15 kHz. The DAS system can achieve the real-time distributed on-line monitoring of partial discharge by the combination of sensing fiber and cable.

参考文献/References:

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备注/Memo

备注/Memo:
Received:2019-06-05;Accepted:2019-09-25
Foundation:Science and Technology Project of China Southern Power Grid Co.Ltd.(SZKJXM20170324)
Corresponding author:Engineer CHEN Jinfeng. E-mail: cjfwy163@163.com
Citation:PI Haoshu, WEI Yingshi, CHEN Jinfeng, et al.Partial discharge monitoring of cable joint based on fiber sensing technology[J]. Journal of Shenzhen University Science and Engineering, 2020, 37(1): 57-62.(in Chinese)
基金项目:中国南方电网有限责任公司科技研究资助项目(SZKJXM20170324)
作者简介:皮昊书(1985—),深圳供电局有限公司福田供电局工程师.研究方向:电气工程及其自动化.E-mail:phs0810@163.com
引文:皮昊书,韦盈释,陈金锋,等.基于光纤传感技术的电缆接头局部放电监测[J]. 深圳大学学报理工版,2020,37(1):57-62.
更新日期/Last Update: 2020-01-30