电子式互感器在智能变电站中的应用分析

Electronic Transformer Application Analysis in Smart Substation

结合电子式互感器的特点,分析智能变电站应用时的电子式互感器原理选择,电子式互感器和合并单元的布置原则及电子式互感器对继电保护的影响,并提出ECT小电流或数字饱和时的保护装置对策。

Combined with the characteristics of the electronic transformer,this paper analyzes the principle selection of the electronic transformer,the arrangement principles of elec-tronic transformer and merging unit,analyzes the influence of electronic transformer in relay protection,and proposes the protection device countermeasures when ECT was in small current or digital saturated state.