Virtual power plant (VPP) composed of a large number of distributed energy resources (DERs) has become a regional multienergy aggregation model to realize the large-scale integration of renewable energy generation into the grid. Due to the characteristics of centralized management, the existing energy operation mode is difficult to simply apply to distributed energy resources transactions. The decentralization, transparency, contract execution automation and traceability of blockchain technology provide a new solution to the aggregation of decentralized resources and the opacity of transactions in VPP. In this paper, the existing problems of virtual power plants are analyzed, and the virtual power plant trading model is designed, which realizes the transparent benefit distribution and message transmission of virtual power plants. The virtual power plant blockchain network based on blockchain technology in this model solves the DERs coordination problem in VPP and the security and efficiency problems in information transmission. Combined with the actual situation of virtual power plant, the blockchain network collaboration mechanism (BNCM), which is convenient to reach agreement, is designed. Compared with the traditional practical Byzantine fault tolerance (PBFT) consensus algorithm, this mechanism can make DERs reach a consensus quickly. Finally, simulation experiments on the consensus algorithm show that the algorithm can reduce the collaboration time between DERs under the premise of ensuring the same fault tolerance rate and is more suitable for VPP scenarios with a large number of DERs.

No abstract

With the rapid development of Intelligent and Connected Vehicles technology, all kinds of cybersecurity risks and problems of intelligent connected vehicles are followed. Systematic protection measures of multiple dimensions are proposed for the main security risks in this scenario. Based on intelligent made car multidimensional cybersecurity defense concept, in-depth analysis of intelligent made car networking security threats and risks, to "risk assessment -cybersecurity protection -test evaluation" as the core, to study and put forward a set of "cloud -communication link -car end" technology protection system is an organic whole, and to test the vehicle key elements, guiding the enterprise application.

No abstract

No abstract