Optical frequency-domain reflectometer-based experimental study on lightning strike temperature variation of overhead ground wire

Xin Peng; Zhehao Yan; Jiaqi WangHaomao WangZhiguo ZhangYe YanJiyong HouXuebin Feng

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Optical frequency-domain reflectometer-based experimental study on lightning strike temperature variation of overhead ground wire

机译：Optical frequency-domain reflectometer-based experimental study on lightning strike temperature variation of overhead ground wire

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摘要

An overhead ground wire is used for both communication and power transmission and is crucial for the long-term operation of power grids. The temperature variations in overhead ground wires under a lightning strike were analyzed using an optical frequency-domain reflectometer. During lightning, the relationship between the peak temperature and the time can be considered a double-exponential distribution. The temperature distribution over time for the overhead ground wire was considered a Gaussian distribution, where the R-squared coefficient was ～0.95. Moreover, we used the -3 dB bandwidth of the temperature curveat each moment as the lightning temperature influence range for the overhead ground wire. The temperature influence was considered a quadratic function distribution, where the R-squared coefficient was ～0.98. The characterization of the temperature variation of the lightning struck-overhead ground wire can provide a basis for distributed optical fiber measurement systems to accurately monitor the location and intensity of lightning strikes and can be potentially used to ensure the safety of transmission lines.

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来源
《Optical Engineering》 |2021年第7期|077104-1-077104-8|共8页
作者
Xin Peng; Zhehao Yan; Jiaqi WangHaomao WangZhiguo ZhangYe YanJiyong HouXuebin Feng;
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作者单位

National University of Defense Technology, Advanced Interdisciplinary Studies College, Beijing, China;

Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing, China;

Chinese Academy of Military Science, National Innovation Institute of Defense Technology, Beijing, ChinaChina Electric Power Research Institute, Beijing, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
关键词
temperature variation; lightning strike; overhead ground wire; optical frequency-domain reflectometer;

Optical frequency-domain reflectometer-based experimental study on lightning strike temperature variation of overhead ground wire

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