光纤光栅大电流传感研究

利用电磁力的原理,提出了一种测量高压大电流的方法,将高压大电流母线缠绕成单匝或双匝螺线管,产生吸引力,使光纤光栅产生应变以此来测量大电流.通过实验使用多匝螺线管和小电流进行了模拟大电流测量.模拟实验结果表明,光纤光栅波长对电流大小的灵敏性逐步增强,特别适合于大电流的测量.

Fiber Bragg Grating Large Current Sensing

A high-handed large current measurement method according to electromagnetism force principle is presented in which the bus bar is twined into single circle or one pair of solenoids to creat attraction with high-handed heavy current, and the high-handed heavy current is measured by optic fiber grating produced strain. Simulation experiments are done by using many circles of solenoid and small current. The results indicate that the sensitivity of the fiber-potical grating wavelength increases as the current increases, and the method is particularly fit to huge current measurement.