CAJ | 학술논문

全温条件下（-40~60℃）测量精度误差较大是影响光纤电流互感器实用化进程的主要原因之一。传感光纤的维尔德常数随光纤内光波平均波长变化，导致系统输出变比漂移，从而降低系统的测量精度。理论分析了光谱平均波长与系统输出变比之间的关系，并通过实验验证了关系式的准确性。分别对光纤电流互感器光路各组成器件对通过光平均波长的影响进行了分析，实验测量了变温条件下平均波长变化的趋势以及程度。提出了起偏器与延迟光纤在变温条件下对平均波长影响的自补偿方案，有效的减小了传感光纤中平均波长的漂移程度。保证光纤电流互感器在变温条件下到达0.2 s级精度要求。同时为适应更高测量精度应用场合提供了参考。
전온조건하（-40~60℃）측량정도오차교대시영향광섬전류호감기실용화진정적주요원인지일。전감광섬적유이덕상수수광섬내광파평균파장변화，도치계통수출변비표이，종이강저계통적측량정도。이론분석료광보평균파장여계통수출변비지간적관계，병통과실험험증료관계식적준학성。분별대광섬전류호감기광로각조성기건대통과광평균파장적영향진행료분석，실험측량료변온조건하평균파장변화적추세이급정도。제출료기편기여연지광섬재변온조건하대평균파장영향적자보상방안，유효적감소료전감광섬중평균파장적표이정도。보증광섬전류호감기재변온조건하도체0.2 s급정도요구。동시위괄응경고측량정도응용장합제공료삼고。
Substandard ratio error under full temperature (- 40- 60℃) is one of the factors that restrains the practical application of domestic All Fiber Optical Current Transformer ( FOCT ) . The Verdet constant of the sensing fiber changes with the fluctuation of mean wavelength when the light goes through. Then the output ratio is influenced which decreases the accuracy of the system. The relation between the fluctuation of mean wavelength and system ratio error was analyzed thoroughly and validated experimentally. Also, influence on the mean wavelength caused by the entire optical components was theoretically analyzed, and the degree of influence and the variation trend were experimentally measured. A method was put forward to make the polarizer and the fiber delay line have a temperature self-compensation on the variation of mean wavelength, and thus the change of mean wavelength was reduced. While the 0.2 s class accuracy requirement is guaranteed, the impact can be lowered as much as possible .