CAJ | 학술논문

商用化的全光纤电流互感器(FOCT)的误差一般要求小于0.2%，信号处理方法是决定该类传感器测量准确度的关键因素。论述了全光纤电流互感器的光路结构、工作原理、技术优势和干涉信号特征，提出了一种基于数字开环的全光纤电流互感器检测系统以及实现方案，论述了其工作原理和特点，试验结果表明，该检测方法提高了全光纤电流互感器的性能，使其满足了0.2级测量用电子式电流互感器的准确度要求，对解决全光纤电流互感器的信号处理、测量准确度和测量灵敏度等问题具有较大的参考价值。
상용화적전광섬전류호감기(FOCT)적오차일반요구소우0.2%，신호처리방법시결정해류전감기측량준학도적관건인소。논술료전광섬전류호감기적광로결구、공작원리、기술우세화간섭신호특정，제출료일충기우수자개배적전광섬전류호감기검측계통이급실현방안，논술료기공작원리화특점，시험결과표명，해검측방법제고료전광섬전류호감기적성능，사기만족료0.2급측량용전자식전류호감기적준학도요구，대해결전광섬전류호감기적신호처리、측량준학도화측량령민도등문제구유교대적삼고개치。
The error of commercial fiber optic current transducer (FOCT) must be less than 0.2%, the signal processing is a key factor for high-accuracy current sensing. The topology, operational principle, technical advantage, signal characteristics of fiber optic current transducer was introduced. A new scheme based on digital open-loop detection for the measurement system of the FOCT was presented, the working principles and features of this design were analyzed. The experimental results show that the FOCT’s measurement precision is improved by using the improved measurement system, and the FOCT can satisfy the accuracy requirements of the 0.2 class measuring electronic transducer, meeting the requirements of digital substation, so it is valuable for solving a great deal of problems, such as the signal processing, measurement accuracy, measurement sensitivity, et al.