(1.Equipment Department,People’s Hospital of Liaoning Province,Shenyang 110015,China;2.School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China) 在知网中查找 在百度中查找 在本站中查找
The degradation of transformer oil in power transformer using fiber Bragg grating sensor was discussed. The survey results showed that aging transformer oil had a higher refractive index compared to fresh transformer oil. This could be detected by the wavelength shift of the spectral response of fiber Bragg grating sensors. The results complied with the breakdown voltage test which was the standard test of transformer oil aging detection. The sensor was independent with temperature in the mean time.