Research On Key Technology Of Information Security Protection In Active Distribution Network

In recent years,the development of smart grid and energy Internet has entered a new phase.From the aspects of energy type,load diversity,network size,demonstration effect and application effect,the active distribution network is an important support for smart grid,the importance of its information data become more obvious.Active distribution network in the realization of the high degree of intelligent integration of "energy flow and information flow",but also have features of the source of different types of complementary,the transmission distribution network,energy storage devices and dynamic access to users.Complex access environments,flexible access methods,volatile distributed energy,and a large number of access terminals make the structure of the active distribution network more complicated than that of the traditional distribution network,and the interaction between the energy flow and the information flow is more frequent,more interdependent.Interaction makes the integration of information network and power network more closely,the security of information network directly affects the security of power network.In view of the above problems,this paper carried out research on the key technologies of information security protection in active distribution network.Firstly,the characteristic model of active distribution network is analyzed,and the model of trusted protection environment of active distribution network is expounded in combination with the existing typical active distribution network security protection mode.Secondly,the embedded trusted distribution terminal is designed according to the application scenario of embedded distribution terminal,and the active distribution network model based on IEC61850 is designed for the interaction of information flow and data analysis at all levels of active distribution network.Thirdly,according to the requirements of complementary coupling and flat management of active distribution network and the supportive role of active distribution network in regional energy Internet,defines a municipal-level regional energy Internet system model based on multi-level energy-information routers and energy-information switches,describes the basic architecture of the system model,the transmission and distribution of energy flow and information flow within the network,and through the security requirements of energy Internet at the municipal level energy Internet security model under complex network environment,based on trusted 2.0 technology to build a trustworthy and in-depth protection system for regional Internet energy security.Finally,based on the advanced nature of trusted 3.0 technology,this paper starting from the energy node,with trusted computing as the basic idea,autonomous controllable as the target and safety immunity as the feature,and the trusted protection scheme is further optimized and adjusted.For the active distribution network construction and its safety protection has certain engineering application and reference value.