Research on security protection framework of power communication network based on software defined network

Under the background of "carbon peak and carbon neutrality", the scale of the power grid is increasingly expanding, the intelligence level of the power grid is continually improving, and the dependence of the power system on the communication network is increasingly increasing. The existing power communication network has numerous problems, such as network architecture, upper business support, network operation and maintenance management. This paper first introduces the development status and conceptual principles of SDN (Software Defined Network), based on the advantages and disadvantages of SDN architecture, the common attack types and defense methods are introduced. By combining the advantages of SDN architecture and traditional power communication network, a new security defense framework of power communication network is designed. Finally, a new power communication scheme with open, numerical control separation and controller centralized management is constructed, and the new power communication scheme is summarized and prospected.