1 500 MVA大容量变压器在国内500 kV枢纽变电站应用尚属首次。研究变电站容量增大后各级配电装置的变化情况，介绍了高阻抗变压器、大容量220 kV设备和66 kV大容量电容器组等新技术、新设备的应用情况，可供相关技术人员参考。

The first application of 1 500 MVA transformer in 500 kV load-center substation is introduced in this paper. Based on the analysis of the power distribution equipment at all levels with the increasing substation capacity, the application of new technology and new equipments, such as high-impendance transformer，220 kV equipment with large capacity and 66 kV large-capacity capacitor bank etc, are presented, providing references for the related technicians.