Abstract With the increase of DC equipments in substation, the battery capacity configuration is becoming larger and larger. In order to reduce the capacity configuration of DC battery and ensure the power supply of important DC loads in the case of all AC power loss, this paper proposes the principle of priority of DC loads in substation. The DC loads of the whole substation are divided into 3 levels, and specific management methods are provided for different levels of loads. The calculation results show that the battery capacity can be reduced after classification.
2021, Vol. 22 
