Based on it the paper proposes a hierarchical network communication model, by which DMS, EMS, MIS can access WAN through the routers to realize the information sharing.

• 由于通信子站一般设在变电站，而且与通信子站所连接的配网设备的路径最短，因此实施配网通信所需要的投资最少，数据传输的可靠性最高。