Research On High Reliable Centralized Control Architecture And Evolution Technology Of Power Communication Backbone Network

In the development trend of China's power grid enterprises with the goal of building a world-class energy Internet,technologies such as cloud computing and mobile intelligence have brought about new business development opportunities based on massive data,and also challenged the capacity of the power communication network.As the core link of the electric power communication network,the traditional distributed control mode of the electric power communication backbone network,with the continuous expansion of the network scale,the structure becomes increasingly complex and it is difficult to guarantee the reliability and flexibility of operation and maintenance management and control.Based on the analysis of the above problems,this article combines the research status of the State Grid Technology Project in which the research group is involved in the highly reliable centralized control architecture of Software Defined Networking(SDN),and applies SDN technology to the power communication backbone network architecture design.The backbone network is evolving to a highly reliable centralized control architecture with network-wide information awareness and unified collaborative control capabilities,enabling new business expansion and support,and further promoting intelligent development of the power grid.First of all,based on the structural characteristics and business needs analysis of the power communication backbone network,the necessity of improving centralized control for the traditional distributed management and control method is proposed.Study the principles and key technologies of SDN and analyze their application advantages in backbone networks based on their characteristics.Secondly.according to the special application scenarios of the power communication backbone network,analyze the multi-layer reliability optimization requirements and methods of the SDN architecture,and combine the key SDN technologies to design a SDN centralized control architecture for the backbone network.Based on the specificity of the backbone network data plane,research routing technologies Realize its reliability optimization.Utilizing SDN's ability to obtain the topological information of the entire network,a multi-factor risk factor for data plane nodes and links was synthesized by a non-linear regression method to design a reliable routing algorithm based on path risk scores.and its effectiveness was verified by simulation.Then,the evolution of control architecture of power communication backbone network is studied.By combining the performance evaluation system of the backbone network based on the fuzzy analytic hierarchy process and the analysis of the main business requirements to build an evaluation model of the operation and maintenance management and control structure,the relative comprehensive importance of the backbone network business is obtained.The evolution direction is determined according to the relatively high demand for high reliability of relatively important services.Based on this,a smooth evolution scheme from traditional distributed control to centralized control is designed.Finally,combined with the requirements of the State Grid Headquarters technology project and the implementation schedule,the power grid test simulation and centralized control field test scheme and process were designed.The above research content is verified to provide forward-looking guidance for the actual deployment planning of the centralized control architecture in the power communication backbone network.