从深圳及北京供水工程调度系统工程的设计实践出发 ,简介了当前国内城市调度系统现状 ,分析了调度管理广域网络系统的建模内容 ,论述了网络系统在建模中要解决的几个关键问题 ,论证了广域网络系统建立的可能性和必要性 Based on the design practice of Shenzhen and Beijing water supply engineering dispatch system project, the current status of domestic urban dispatch system is introduced. The modeling content of dispatching and managing WAN system is analyzed. Several key problems to be solved in the modeling of network system are discussed. , Demonstrates the possibility and necessity of establishing a WAN system