Abstract:

On the basis of AC and DC power distribution network,this paper proposed the different AC-DC interface ways,and then for Zhangbei AC-DC power distribution network and the flexible substation demonstration project first phase and the final phase,under the different operation modes,put forward different switching principle and the corresponding transformation method.The results show that the seamless switching of the flexible DC transformer substation equipment control model of different system operation mode,can improve the reliability of the whole system.

Key words: AC distribution network, DC distribution network, connection mode, interface way, seamless switching