500 kV变电站站用交流电源系统原屏改造

The Reconstruction of the Station AC Power Supply System for 500 kV Substation

介绍500 kV东坡变电站站用交流电源系统改造前后的变化,阐述其改造原则如开关选型、负荷分类配置、二次回路改造、保护配合及选择性实现等,对改造实施过程各停电阶段关键风险点进行分析,并总结验收过程注意事项。

This paper Introduces the difference after the reconstruction of the station AC power supply system for 500 kV Dongpo substation.Expound the reconstruction principles including breaker selection,load classification,secondary circuit transformation and protection coordination etc.Analyze the key risk points at the each power off stage in reconstruction.Summarize the matters needing attention in test and acceptance.