基于偏振调制型全光纤电流互感器的研究  

Study of all-fiber current transformer based on polarization modulation

作　　者：方浚丞[1] 陆安山[1] 

机构地区：[1]钦州学院物理与电子工程学院,广西钦州535000

出　　处：《激光与红外》2015年第5期532-537,共6页Laser & Infrared

摘　　要：随着电力系统输电电压等级和传输容量的不断提高,传统的电磁式电流互感器暴露出诸多问题已难以满足当今社会的需要。本系统通过对光纤电流互感器的理论基础进行了深入的研究,并在此基础上建立了光纤电流互感器数学模型;根据模型设计了光纤电流互感器光路系统,并根据光路特点选择了相关器件;根据光路系统输出信号的特点,设计了激光器驱动电路和光纤电流互感器信号检测电路,对检测电路的性能进行了单独测试;最后,设计了光纤电流互感器准确度测试系统,并对所设计的光纤电流互感器系统进行了整体测试。测试结果表明,在相同的测试环境下,该光纤电流互感器的输出具有极好的线性,测试结果符合IEC0.2S级。With continuous improvement of transmission voltage classes of the electrical power system and the trans- mission capacity, the traditional electromagnetic current transformer has exposed many problems and has been difficult to meet the needs of current society. The basic theory of optical fiber current transformer was studied, and the mathe- matical model of the optical fiber current transformer was established on this basis. According to the model, the optical fiber current transformer system was designed, and the related devices were chosen based on the optical path. And ac- cording to the characteristics of the output signal light path system, driver circuit of the laser and signal detection cir- cuit of optical fiber current transformer were designed to test the performance of the detection circuit separately. Finally, accuracy testing system of the optical fiber current transformer was designed, and the optical fiber current transformer system was tested. Test results show that under the same test environment, the output of the optical fiber current transformer has a very good linear property, and the test results agree with IEC 0. 2S-class.

关 键 词：光纤电流互感器 激光驱动电路 信号检测电路 IEC 0.2S 

分 类 号：TN249[电子电信—物理电子学]