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| 基于BOTDR的雨天输电线缆温度变化研究 |
| Study on temperature change of transmission cable in the rainy days based on BOTDR |
| 投稿时间：2015-12-08 |
| DOI：10.3969/j.issn.1005-5630.2016.05.008 |
| 中文关键词: 温度 光纤复合架空地线 布里渊频移 在线监测 |
| 英文关键词:temperature optical fiber composite overhead ground wire Brillouin frequency shift online monitoring |
| 基金项目: |
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| 摘要点击次数: 2570 |
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| 中文摘要: |
| 为保证输电线路的安全运行，对高压输电线路的实时运行温度进行了研究。采用光纤复合架空地线作为传感器和通信通道，并利用布里渊光时域反射技术对输电线路在下雨过程中的温度进行实时监控。根据实际测实的数据发现在雨后温度回升的过程中，留在线缆上的雨水因重力作用而向中间汇集，使得杆塔的温度回升速度高于中间，输电线缆杆塔处的温度会高于两个杆塔中间线路的温度，因而出现温差。 |
| 英文摘要: |
| In order to ensure the safe operation of transmission lines,this paper studied the real-time operating temperature of high voltage transmission lines.By using optical fiber composite overhead ground wires as the sensors and communication channels,the research monitored the real-time temperature of the transmission lines exposed to the rain,utilizing the Brillouin optical time domain reflectometry technique.According to the data found in the test,when the temperature rises after the rain,the rain water left on the cable flows to the middle due to the gravity,which makes the speed of temperature of the tower rises quicker than that in the middle.Thus,the temperature of the transmission towers at the two ends is higher than the cable in between,which brings about the difference in temperature. |
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