分布式光纤在110kV导体-地面电线冰排放过程中感知温度升高的温度
Yanpeng Hao1, Zijian Wu1, Lei Huang1
1School of Electric Power, South China University of Technology, Guangzhou 510640, China.
Micromachines
|January 28, 2026
概括
本研究介绍了一种使用Brillouin光学时域反射计 (BOTDR) 来检测输电线路上的冰流放电的分布式光纤传感方法. 该系统监测光纤复合物空接地线 (OPGW) 由于放电事件引起的温度变化.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
背景情况:
- 在空中输电线路上发生的冰流导致跳动放电和线路.
- 目前,缺乏有效的监测方法来监测冰倾倒排放.
- 这种差距需要先进的传感技术来确保电力线的完整性.
研究的目的:
- 提出和验证一种分布式光纤传感方法,用于检测冰放电.
- 为了调查Brillouin频率转移 (BFS) 特性,以应对放电事件.
- 在各种结冰条件下确定BFS变化和排放参数之间的关系.
主要方法:
- 使用了Brillouin光学时域反射计 (BOTDR) 与光纤复合物上空接地线 (OPGW).
- 在受控的结冰条件下进行模拟的冰流放电试验.
- 分析了局部温度升高及其对OPGW纤维BFS的影响.
主要成果:
- 脱冰排放会在OPGW纤维中产生局部温度升高 (20-40厘米的轴向延伸,持续2-4秒).
- 最大BFS增量 (ΔvTm) 受到结冰条件的显著影响,随着冰积累的增加而减少.
- 最佳检测需要具有空间分辨率<0.1m和时间采样率≥5Hz的BOTDR.
结论:
- 使用BOTDR的分布式光纤传感可用于检测110kV导体-地面电线上的冰放电.
- 该研究提供了实验证据,支持使用OPGW实时监控排放事件.
- 结果提供了对放电机制的见解,并支持开发可靠的电力线路监控系统.
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