变电站二次回路设计中的电流互感器应用

摘要

依据积累的工程经验，对电流互感器（TA）在变电站二次回路中的应用设计，进行了分析与介绍。在叙述 TA 工作原理、二次参数的选择、TA 饱和特征、TA 接入继保装置极性的基础上，提出了在设计工程中需要注意的若干问题。%According to the accumulated engineering experience,the application technology of the current transformer (TA)in substation secondary design is analyzed and introduced.On the base of describing the principle of TA,the choice of the secondary parameters,TA saturation characteristic,the polarity when TA accessed relay protection device,and puts forward some problems needing attention in the design of engineer-ing.