On Line Monitoring of Substation Equipment Temperature Based on Fiber Bragg Grating

It is introduced that the basic structure, mathematical model and the principle of temperature measurement of fiber Bragg grating. According to the operation characteristics of substation equipment, the packaging technology and installation method of Bragg grating sensor are studied, a fiber grating temperature demodulation system using time division multiplexing and wavelength division multiplexing is designed, and the temperature sensor property is tested, comparison and analysis of 3 experimental data fitting peak searching algorithm influence on measurement accuracy is given, fitting peak search algorithm that is suitable for engineering is presented.