500kV变电站主变差动保护用TPY级电流互感器参数优化

Optimization of Current Transformer TPY Winding for Main Transformer Differential Protection in 500 kV Substation

500 kV主变压器差动保护各侧宜配置TPY级电流互感器,因TPY级绕组体积较大,对部分外形较小的220 kV GIS安装空间不足,通过对TPY绕组参数优化,缩小TPY级绕组的体积,节省工程投资,并且可以满足外形较小的GIS安装空间。

500 kV main transformer differential protection should be configured TPY-class current transformer windings on each side of transformer.Due to large volume of TPY winding,some smaller 220 kV GIS products don＇t have enough space to install the TPY winding.This paper explained the optimization of TPY parameter,reduced the volume of TPY winding volume,saving the project investment,and have enough installation space to meet the smaller GIS shape.