A method for measuring network channel delay for virtual power plant aggregation control

Virtual power plants aggregate different distributed energy sources, combine them into a whole, participate in the operation of the electricity market, and become the development direction of the future power grid. This article proposes a critical node protection strategy for virtual power plant CPS networks under three architectures: decentralized architecture, centralized architecture, and fully decentralized architecture, which cannot effectively resist intentional attacks. Firstly, introduce the construction and feature analysis of the virtual power plant's cyber physical network topology, as well as their coupling relationships; Then, the cascading failure process was explained in detail, and the cascading failure processes of the three architectures were shown separately with pictures; Secondly, the reliability analysis of the virtual power plant information physical system is introduced, including the reliability evaluation model, key node protection strategy, and two reliability indicators; Finally, the reliability indicators of the three architecture networks under critical node protection were tested separately, verifying that the critical node protection strategy can effectively resist intentional attacks and improve the reliability of the network.