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The working principle and sensing process of distributed opt

The distributed optical fiber temperature measuring system can be divided into three types according to the principle of backscattering: Rayleigh scattering, Raman scattering and Brillouin scattering. The distributed optical fiber temperature measurement system based on Raman scattering is applied in engineering. Its sensing principle is mainly based on the optical time domain reflectometry (OTDR) principle and the Raman scattering temperature effect of optical fiber.

With the development of China's economy, the power system is developing towards the direction of ultra high pressure, large power grid, large capacity and automation. Once the accident happens, it will cause great loss to the national economy. How to monitor the running power equipment online and carry out safety prediction and temperature change trend analysis? How to analyze the equipment quality, operating environment, operation mode, equipment aging, load imbalance and so on through real-time data? These are the urgent problems that need to be solved in the power system. The traditional infrared thermometer, infrared imager, temperature sensing cable and thermoelectric resistance measurement system can only measure the local position of the power system, and can not provide a scientific basis for safety, economic operation and efficient maintenance. The distributed optical fiber temperature measurement system can realize distributed measurement of multi point and online. It realizes real-time on-line monitoring of operating equipment. It effectively solves the problems of emergency accidents such as high temperature, combustion, explosion, fire and so on for a long time. In the power system, the optical fiber temperature measurement technology has a wide application prospect in the temperature fixed-point sensing situation of high voltage power cable and electrical equipment due to the heating part, cable interlayer, cable channel, large generator stator, large transformer, boiler and so on.


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Tianjin Hui Gan Optoelectronic Technology Co., Ltd.

Tel:022-58601968

Phone:15620601598

Email:15620601598@163.com

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