摘要
针对现场总线存在成本高、速率低、开放性和兼容性差以及通信协议多样的缺陷问题,说明数字变电站中实时以太网替代现场总线的必要性和优越性。为此,分析和研究了以太网工业协议(Ethernet Industrial Protocol,EtherNet/IP)、ProfiNet、基于以太网的工厂自动化(Ethernet for Plant Automation,EPA)等适用于数字化变电站的典型实时以太网技术的优、缺点,最后指出实时以太网在过程总线通信应用中还存在的一些问题。
Aiming at defects of field bus such as high cost, low efficiency, inferiority in openness, compatibility and variety in communication protocols, the paper expounds necessity and superiority of replacing field bus with real-time Ethernet. Therefore, advantageous and disadvantageous of real-time Ethernet technique based on Ethernet industrial protocol （EtherNet/IP）, ProfiNet and Ethernet for Plant Automation （EPA） acceptable for digital substations are analyzed and researched. Finally, it is pointed out that there are some problems in application of real-time Ethernet in communication of process bus.
出处
《广东电力》
2011年第10期48-52,共5页
Guangdong Electric Power
