基于光纤光栅的电压传感器的设计.doc

基于光纤光栅的电压传感器的设计 燕山大学本科生毕业设计（论文） Abstract In recently, with the rapid development of economy of various countries, the demand for power of electric is rising sharply, and the requests of voltage grades are also more and more higher. Optics voltage sensor has many advantages, such as small size, broad band, light weight, a big dynamic range, capacity does not receive limits, and easy to connect with the computer. It accords with the development of automation and digitization of electric power system measurement equipment, thus has the extremely wide application prospect. Based with the conclusion of the present Optical Voltage Transformer, the paper supply a measure which use Fiber Bragg grating sensors to realize voltage real-time detection. The main contents of the paper are made up by three modules and the detail as follows: The first part of the paper take a brief introduction about the background of this study and the present state of the research of Optical Voltage Transformer in domestic and overseas, and make an analysis about its problem which is exposed. In the second place, the paper recommend the structure and the important parameter about the fiber that is the transmission channels of light and the sensor probe (Fiber Bragg Grating) which is related in the task, and emphases discuss the sensing properties and principle of the sensor based on FBG ,then retrospect FBG sensor that used in various field. The last part analyses the function and principle of all components of system, and completely design the Voltage Sensor which based on FBG. Using PCI-7484 multi-functions data collection cards collected data is the new creation of this paper. Finally using Least square method dispose experimental data in MATLAB environment, and getting the right conclusion to show that there is a linear relationship between the measured voltage and the Bragg Wavelength. II 燕山大学本科生毕业设计（论文） Keywords Optical Voltage Transformer; Fib