冗余以太网在东深供水改造工程中的应用

通过对双星型和双环网络结构进行比较分析，双星网络结构适合于控制中心集中、网络结构要求扩展性高的系统，双环网络结构适用于系统安全稳定性高，控制中心可分散，扩展要求低的系统，基于以上分析，采用了双星型网络结构，该网络结构具有高可靠性、多层网络冗余、先进的容错技术、高度的网络内部安全性等特点。

Application of Redundant Ethernet of Dongshen Water Supply Improvement Project

By the analysis of the double-star shaped network configuration and the double-ring shaped network configuration, the former adapts to the system whose control center is concentrated, and whose network structure requires higher expansibility; but the double-ring shaped network configuration adapts to the system that is higher security and higher stability, whose control center may decentralized, and whose network configuration requires lower expansibility. Based on the analysis of the two network configurations, the author adopts the former for that has many properties, for example, higher reliability, multiplayer network redundance, advanced intervein technique, and higher network interior security.