中国电力 ›› 2015, Vol. 48 ›› Issue (3): 27-31.DOI: 10.11930.2015.3.27

• 电网 • 上一篇    下一篇

基于FBG的输电线路微风振动在线监测方法

赵隆12,黄新波1,朱永灿3   

  1. 1. 西安工程大学 电子信息学院,陕西 西安 710048;
    2. 西安电子科技大学 机电工程学院,陕西 西安 710071;
    3. 陕西省输变电设备状态监测工程技术研究中心,陕西 西安 700048
  • 收稿日期:2014-12-23 出版日期:2015-03-25 发布日期:2015-11-27
  • 作者简介:赵隆(1987—),男,新疆石河子人,博士研究生,从事智能电网在线监测理论与关键技术的研究。E-mail: zhaolong36@126.com
  • 基金资助:
    国家自然科学基金资助项目(51177115);陕西省重点科技创新团队计划资助项目(2014KCT-16)

Research on Online Monitoring Method of Aeolian Vibration on Transmission Lines Based on FBG

ZHAO Long1,2, HUANG Xinbo1, ZHU Yongcan3   

  1. 1. School of Electronics and Information, Xi’an Polytechnic University, Xi’an 710048, China;
    2. School of Mechano-electronic Engineering, Xidian University, Xi’an 710071, China;
    3. Shaanxi Engineering Research Center of Condition Monitoring for Power Transmission and Transformation Equipment, Xi’an 710048, China
  • Received:2014-12-23 Online:2015-03-25 Published:2015-11-27
  • Supported by:
    This work was supported by National Natural Science Foundation of China(51177115), and by Key technology Innovation Team Project of Shaanxi Province (2014KCT-16).

摘要: 输电线路导线和地线振动往往造成线路断股断线、金具脱离等危害,现有的导线微风振动监测装置采用互感取电方式供电,而地线监测装置采用电池供电,使用寿命较短,且易受电磁干扰、雷击电流的影响。针对这些问题,开发了基于光纤光栅(fiber Bragg grating,FBG)传感器的输电线路微风振动在线监测系统,系统采用悬臂梁结构的光纤光栅传感器测量地线振动时反射光的波长变化,并通过OPGW/OPPC将光信号发送至变电站的光纤光栅解调仪,再通过安装在变电站的状态监测装置计算出导地线的动弯应变、振动幅值以及振动频率。系统可以实现地线微风振动的无源测量,不再存在电源供电的问题。此外,结合光纤光栅传感器抗电磁干扰、精度高的特点,提高了系统的稳定性和可靠性。

关键词: 输电线路, 微风振动, 在线监测, 光纤光栅, 传感器, 测量

Abstract: The conductor and fittings could be damaged because of aeolian vibration of overhead transmission lines. The existing aeolian vibration monitoring devices use mutual inductor and lithium battery as power source, which has short lifespan and also are susceptible to electromagnetic interference and lightning surge current. An aeolian vibration monitoring system based on fiber bragg grating(FBG) is presented. FBG interrogator is used as sensor to detect reflected light wavelength variation during grounding wire vibration. The optical signal is sent through OPGW/OPPC to FBG demodulator inside substation to calculate grounding wires parameters including strain, vibration amplitude and frequency. The proposed online monitoring system does not require onsite power supply, has high resistance to electromagnetic interference and high measurement accuracy, which in turn improves system stability and reliability.

Key words: transmission lines, aeolian vibration, on-line monitoring, FBG, finite element

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