| 变压器油中多组分故障气体的光纤检测 |
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| 引用本文： | 戚克军,张志鹏,李少慧,吴健春. 变压器油中多组分故障气体的光纤检测[J]. 华中科技大学学报(自然科学版), 1996, 0(10) |
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| 作者姓名： | 戚克军 张志鹏 李少慧 吴健春 |
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| 作者单位： | 电力工程系 |
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| 摘 要： | 阐述了变压器油中故障气体光纤检测的意义，分析了气体浓度二次和三次谐波检测与调制点的关系；提出了方波调制ＬＤ的非机械斩波时分－差分检测方法；讨论分析了多组分气体的检测方法及其适用条件
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| 关 键 词： | 变压器油；光纤传感器；谐波检测；方波调制；时分－差分检测；多组分气体检测 |
A Fiber Optic Sensing System for Gas Monitoring in Transformer Oil due of Fault |
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| Qi Kejun Dept. of Electrical Eng.,HUST,Wuhan ,China. Zhang Zhipeng Li Shaohui Wu Jianchun. A Fiber Optic Sensing System for Gas Monitoring in Transformer Oil due of Fault[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1996, 0(10) |
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| Authors: | Qi Kejun Dept. of Electrical Eng. HUST Wuhan China. Zhang Zhipeng Li Shaohui Wu Jianchun |
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| Affiliation: | Qi Kejun Dept. of Electrical Eng.,HUST,Wuhan 430074,China. Zhang Zhipeng Li Shaohui Wu Jianchun |
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| Abstract: | The harmonic detection of gas absorption with sine bias modulation is discussed. If the bias level is on the peak of the gas absorption line, the third harmonic does not change with the shift of the center wave length of the light source, and if the bias lvevel is on one side of the absorption line, the second harmonic is the best one that can be detected. A TDM DAT detecting method with square wave bias modulation is presented as another possible method of detecting the gas in very small quantities. Based on the discussion on harmonic and TDM DAT detection, several configurations and equations as well as the conditions for application to the detection of the case where there exist multiple gases are given. |
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| Keywords: | transformer oil fiber optic sensor harmonic detection square wave bias modulation TDM DAT detection of gas with multiple constituents |
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