PTN在电力通信网中的组网策略研究

随着智能电网业务的不断开展，电力通信网的业务形式由传统的语音模拟业务向分组等数据业务不断演进，而传统的刚性传送网MSTP无法提供数据分组业务端到端动态调度的功能。基于MPLS—TP的PTN分组交换网技术融合了传统SDH／MSTP的安全性与IP网络高带宽的双重优势，文章介绍了MSTP和PTN双平面组网方式，该组网方式可以进一步提高IV级通信网的安全可靠性，有效缓解MSTP网络的带宽紧张，并逐渐将分组业务割接到PTN网络。最后给出了位于电力lV级通信网的城域传送网的组网方式及建设策略。

Research on PTN Networking Strategy in Electric Power Communication Network

With the continuous development of smart grid services, the services of electric power communication network form are evolving from traditional voice analog service to packet data services, traditional rigid transmission network MSTP cannot provide the data packet traffic end-to-end dynamic scheduling function. Firstly, this paper introduces the packet transport network （PTN） with the dual advantages of the traditional SDH/MSTP security and IP network based on high bandwidth. Then a MSTP and PTN dual plane network mode is proposed, which can further improve the safety and reliability of level-IV communication network and effectively alleviate the MSTP network bandwidth tension, thus the packet data service could be taken over by PTN gradually. Finally, the networking mode and construction strategy of level-IV electric power communication network are presented.