电力系统保护与控制2011，Vol.39Issue(1)：62-66,5.
光纤电流互感器噪声特征及建模方法研究
Research on character and modeling method of noise in fiber optic current transducer (FOCT)
摘要
Abstract
Focusing on the problem of random noise in fiber optic current transducer (FOCT) , this paper discusses systematically the noise category, influencing factors on noise, and methods of restricting noise based on the structure and principle of FOCT by reference of fiber optic gyroscope(FOG).Noise in FOCT shows different time domain coherence and various frequency domain features.According to the character, different types of noise are identified and quantified by introducing Allan variance and modeling theory to FOCT noise analyzing system, and FOCT performance is evaluated comprehensively.Results of Allan variance and modeling theory used in FOCT data processing show that FOCT output data display different random noises such as angle random walk, bias instability, etc.At the same time, the feasibility of Allan variance theory used in analyzing and modeling FOCT noise is proved.关键词
光纤电流互感器/随机噪声/功率谱密度/建模Key words
fiber optic current transducer(FOCT)/ random noise/ power spectrum density/ modeling分类
信息技术与安全科学引用本文复制引用
王立辉,伍雪峰,孙健,陆于平..光纤电流互感器噪声特征及建模方法研究[J].电力系统保护与控制,2011,39(1):62-66,5.基金项目
中国博士后科学基金资助项目(20100471357) （20100471357）
国家自然科学基金项目(51007007) （51007007）
江苏省电力公司2010年科技项目 （）
