一种高压电子式互感器腔体内温度测量方法

Scheme of measuring temperature of high voltage electronic potential transformer vessel

针对高压电子式电流和电压互感器腔体内温度测量困难的问题,设计了一种F-P温度传感器及解调方案。采用铜管和端面镀膜的光纤制作F-P传感器,白光光源经过腔长受温度调制的F-P传感器选频后,用平面光栅和线阵CCD实现光波波长的解调。对F-P传感器的结构以及解调系统的光路行了设计分析,并进行了实验验证。系统结构简单,精度和可靠性高,可以很好地满足高压电子式互感器输出信号温度补偿的需要。

In order to conquer the difficulty of measuring temperature of high voltage electronic current and potential transformer vessel, F-P temperature sensor and demodulating scheme is designed. The F-P sensor is composed with a copper tube and endplate fiber. After frequency selecting when white light walks through the F-P sensor which cavity modulated by temperature, wavelength demodulating is realized with a plane grating and CCD. It designs and analysis F-P sensor＇s structure and wave light path demodulating system. And an experiment was taken to validate it. The system has advantage of simple structure, high precision and reliability, which can satisfy the demanding for temperature compensating of high voltage electronic transformer output signal.