A New Structure Design Of Equipment Management System In Smart Grid

Energy Internet is the integration of power network,transportation network,natural gas network and information network.In the concept of energy Internet,the smart grid needs to meet some new requirements,including a more extensive connectivity,a more interactive user experience,a more secure information architecture and so on.Meanwhile,user-side power demand response presents some challenges to the communication architecture of the smart grid,including the support for the large-scale two-way communication used for user interaction,the seamless plug-and-play access for non-smart electric meter equipment,etc.In this paper,a new management architecture for the smart grid equipment is designed and implemented,which can support the large-scale two-way communication and flexible authentication mechanism.It meets the requirements proposed by user-side power demand response.The proposed new architecture adopts the 6LowPAN technology and the RF Mesh technology to construct the communication link.Furthermore,a new authentication model is designed,which is the extension of IEEE 802.1x protocol based on the SCEP protocol.In addition,in order to improve the security of data transmission,a two-level FSVM-MLR intrusion detection model is proposed,which is more suitable for the large-scale smart grid with few training samples in multi-class classification,and non-uniform distribution of multi-class samples.The first FSVM level detection model classifies the network data packets into normal data or attack data.Then the second MLR level detection model identifies the specific categories of attack data.By the experimental verification of Tools CPN,the new architecture proposed in this paper is feasible and safe.In this paper,the detection accuracy of the proposed two level FSVM-MLR intrusion detection model can reach 95%,which is improved by 10% compared with the first level MLR model.Finally,this paper implements the management system based on the new equipment management architecture,and gives the analysis of the system functions.