【摘要】 利用Faraday磁光效应通过偏振调制进行电流测量的光学电流互感器(OCT)是电力互感器的发展方向,以往研制的OCT测量输出多局限于被测量的幅值,不包含相位信息,不能完整地反映被测量。根据IEC60044-8"ElectronicCurrentTransformer"的要求,设计了OCT的模拟输出,重点研究了被测电流频率与输出信号相位的关系,实验结果表明设计的模拟输出可以满足0.2级准确度的要求。更多还原

【Abstract】 The kind of optical current transformer(OCT) using Faraday magnetooptical effect by means of polarization modulating is development direction of current transformer. Its output used before is mostly limited in the amplitude value of current, however the phase information is not contained, so the primary current can’t be completely described. According to the requirement of IEC 60044-8"Electronic Current Transformer", the analogue voltage output of OCT is designed, and the relationship between the current frequency and output signal phase have been emphatically studied. It has been proven by the experiment result that the analogue voltage output of designed OCT can achieve 0.2 accuracy class.更多还原