A REACTIVE POWER SENSOR BASED ON FIBER BRAGG GRATING AND A PIEZOELECTRIC TRANSDUCER

摘要

This article develops an optical fiber sensor using a fiber Bragg grating (FBG) and a piezo-electrical transducer (PZT) to measure reactive power. By mounting an FBG on a PZT bar, a dynamic strain simulator was constructed. The equivalent voltage produced by reactive power applied to the PZT was converted to the dynamic variation of the FBG Bragg wavelength. The reactive power was attained by measuring the changing value of the wavelength. Thus, the sensor can be used to measure reactive power without the use of a traditional power meter.