This method can detect not only faults in primary substation, but also fault area in radial line between the primary substation and the secondary one (or switching station).
Because of adopting electronics transformers and intelligence switches in digital substation, it is necessary to study a new method of voltage switching.
数字化变电站由于采用了电子互感器和智能开关，因此有必要研究新的电压切换方式。
3
It follows the operation pattern of substation system automatically and executes corresponding auto-switching scheme to ensure power supply continuous and reliable.