电流互感器的设计选择

Design Selection of Current Transformer

针对国家城农网的改造,系统短路容量急剧增加、新型保护装置大量采用的状况,分析在设计中选择电流互感器额定一次电流、额定二次电流和准确级原则,论证S级电流互感器的应用条件、选择原则以及多次级电流互感器合理性和电流互感器二次参数的定量选择计算。

In allusion to capacity increase, structure change of the power system, and adoption of different type current relays, this paper analyes factors relating to selection of rated primary current and accuracy class of current transformer, discusses its application conditions and selection criteria for class current transformer as well as the rationality of multi-stage current transformer, discusses quantitative selection and calculation of the current transformer parameters.