【摘要】 为解决传统电磁式电压互感器在高电压等级设计的技术瓶颈，提出一种基于全光纤技术的电子式电压互感器。对该装置从一次侧和二次侧分别进行结构设计。将一次侧从屏蔽装置、传感模块、保偏光纤3部分进行功能介绍；将二次侧分解为光路系统和电路系统，光路系统由光源、光电探测器、环形器、Y波导调制器和保偏耦合器组成，电路系统由光电探测器、模/数转换器、数字信号处理器、可编程门阵列、数/模转换器、驱动电路组成，并分别给出原理结构图。对软件系统采用代码编写器平台编辑，从干涉光检测、模/数转换、数字信号处理、输出二次电压值、数/模转换、调制器驱动、干涉光转换等方面对电路系统给出软件流程图。通过与传统220 kV电磁式电压互感器进行误差比对试验和测量重复性试验，证明该互感器性能可靠。更多还原

【Abstract】 In order to solve the technical bottleneck of traditional electromagnetic voltage transformer in high voltage level design,an electronic voltage transformer based on all fiber technology was proposed.The structure of the device was designed from the primary side and the secondary side respectively.The functions of the primary side were introduced from three parts:shielding device,sensing module and polarization-maintaining fiber.The secondary side was decomposed into the optical circuit system and the circuit system.The optical circuit system consists of light source,photodetector,toroidal device,Y waveguide modulator and polarisation-preserving coupler.The circuit system consists of photodetector,A/D converter,digital signal processor(DSP),field programmable gate array(FPGA),D/A converter and driving circuit.The principle structure diagram was given respectively.The software system was edited by code compiler platform,and the software flow chart of the circuit system was given from the aspects of interference optical detection,A/D conversion,digital signal processing,output secondary voltage value,D/A conversion,modulator drive,interference optical conversion and so on.Through the error comparison test and measurement repeatability test with the traditional 220 kV electromagnetic voltage transformer,the performance of the transformer is proved to be reliable.更多还原