新型光纤电压互感器信号检测系统的设计  

Design of Signal Detection System for Optic Fiber Voltage Transducer

作　　者：郭璇[1] 毕卫红[1] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《仪表技术与传感器》2008年第9期78-80,共3页Instrument Technique and Sensor

摘　　要：设计了一种新型的基于椭圆芯保偏光纤模间干涉原理的光纤电压互感器,利用椭圆芯保偏光纤LP01模和LP11偶模间的干涉和石英晶体的逆压电效应来实现被测电压的测量。在阐明互感器工作原理的基础上重点研究了新型电压互感器的信号检测方法,设计了基于主动零差相位跟踪原理的传感器信号检测系统,进行了详细的理论分析,建立了系统的数学模型并利用MATLAB仿真,研究了系统稳定的建立过程,给出了系统的稳态响应和暂态响应的仿真结果。最后通过实验验证了信号检测系统具有良好的实时性和稳定性,证明该方法可以很好地应用于新型光纤电压互感器中。A novel optic fiber voltage transducer based on modular interference theory in elliptical-core polarization maintenance fiber （E-core PMF） was designed. The converse piezoelectric effect and interference between-mode and even-mode were used to measure the high-voltage. This paper introduced the principle of the transducer, and focused on research of the signal de tecting method of the novel voltage transducer. A signal detecting system based on active homodyne phase tracking theory was designed. It deduced mathematical model of the detecting system and simulated establishing process of the stability with MATLAB after detailed theory analysis. And simulation results of the system＇ s steady response and temporary response were given. The experiment indicates that the signal detecting system has ideal response time and stability, and it can work well in the novel optic fiber voltage transducer.

关 键 词：光纤电压互感器 模间干涉 逆压电效应 相位跟踪 正交控制 

分 类 号：TM930.12.4-6[电气工程—电力电子与电力传动]