新型光学电压互感器及其信号处理的原理与算法

介绍了一种新型全电压,单晶体,纵向电光调制的光学电压互感器的内部光学结构,该互感器具有重量轻,抗电磁干扰能力强,安全等优点,通过对光学电压互感器内部原理的分析,利用磷酸二氢钾（KDP）晶体的线性电光效应,提出基于数字信号处理器（DSP）技术的实时信号处理方法,具有实时性强,精度高,数字化程度等特点,经过数字仿真和现场调度,最终应用于实际的光学电压互感器的样机中,达到了预测的性能要求。

A NEW ELECTRO-OPTIC TRANSFORMER AND ITS SIGNAL PROCESSING ALGORITHM AND IMPLEMENTATION

An optical architecture of a new optical electronic voltage transformer is developed ,which is the full voltage, single crystal, longitudinal-mode Pockels-modulator and advanced technology in China. The new voltage transformer is designed for the high voltage measuring system of five hundred thousand voltage of the Three Gorges of the Yangtze River power station. It is one of national Ninth-five projects. It has some advantages, such as light weight, high ability of resisting electromagnetism and safe measurement. Through analyzing the inner principle of the optical voltage transformer and the linear electro-optic effect of KDP, an method of real-time signal process based on the technology of DSP is developed. The method has character of high real-time performance, high accuracy and high digital degree. It is used in the prototype of the optical voltage transformer after simulation and field test. A good performance is obtained. This project is supported by Key Project of the National 9th "5 Years' Plan".