Dr. Jinsheng J. S. Xiao Profile

Dr. Jinsheng J. S. Xiao

at Wuhan Univ

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Proceedings Article | 1 November 2007 Paper

FBG based intelligent sensors and structure for electrical power system

Yuan Yao, Benshun Yi, Jinsheng Xiao, Zhaohui Li

Proceedings Volume 6423, 64233Y (2007) https://doi.org/10.1117/12.779626

KEYWORDS: Fiber Bragg gratings, Sensors, Magnetism, Temperature metrology, Nickel, Magnetic sensors, Ferroelectric materials, Intelligent sensors, Magnetostrictive materials, Piezoelectric effects

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Fiber Bragg grating (FBG) sensors are of particular interest for applications in the high voltage environments of electric power industry. The study on the parameter examination and health monitor of the electric power apparatus has great social significance and economic benefits. In this paper, the electric field or voltage sensor is constructed by using the electrostriction material PZT combined with the FBG, while the magnetic field or current sensor is based on the giant magnetostriction material (GMM). The characteristics of FBG strain, the relationship between the electrostriction displacement of piezoelectric ceramic (PZT) material and the excitation voltage, relationship of the magnetostriction displacement with excitation current, are analyzed respectively. The designed intelligent electrostrictive and magnetostrictive sensors are both with temperature compensation. In each sensor, two FBG's are bonded in perpendicular to each other that the electrostictive or magnetostrictive effects on the two gratings are added together, while the temperature effects are cancelled out. These electrical parameter sensors can be widely used for fault diagnosis in electrical substation. The development trend and applications of FBG sensors for power system are discussed.

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