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| Fluorescence Fiber Temperature Monitoring System Reserach Used for Above 500kV Ultra High Voltage Level Oil-immersed Transformers |
| Wang Chen1, Lian Zilong1, Cheng Lin2, Deng Jian’gang2, Lu Yuncai3 |
1. Beijing Oriental Rayzer Technolongy Ltd, Beijing 100085;
2. State Grid Electric Power Research Institute, Wuhan NARI Limited Liability Company, Wuhan 430000;
3. State Grid Jiangsu Electric Power & Research Instiute, Nanjing 210024; |
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Abstract Internal winding temperature real-time monitoring is an important part of guarantee reliable operation in ultra high voltage level oil-immersed transformers, the existing way to measure internal winding temperature through calculation and winding temperature calculation model. The impact of transformers internal hot-spot temperature is not only the coil temperature fever caused by heat transfer to other position changes but also the magnetic flux close to the transformer coil. Through the model calculated the temperature distribution inside the transformer have big error. This paper discusses based on the fluorescent light attenuation and temperature, find a fluorescence optical fiber temperature sensing technology, provide fluorescent sensor material properties and package structure, Verify the temperature measurement precision of the sensor and the safety and reliability of the used materials. The temperature monitoring system has been successfully applied above 500kV ultra high voltage level oil-immersed transformers, realize the ultrahigh pressure oil-immersed transformer winding temperature on-line monitoring.
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Published: 28 June 2017
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2017, Vol. 18 
