Power information physical system modeling method based on alternating current power flow model

Abstract

The invention relates to a power information physical system modeling method based on an alternating current power flow model, which is characterized by comprising the steps of power network modeling,information network modeling and power network and information network interaction process, takes power flow characteristics of a power network and monitoring and control functions of an informationnetwork into consideration, and realizes modeling of a power information physical system. Compared with a modeling method based on a complex network theory, the method provided by the invention can reflect dynamic characteristics of the power grid, and the optimal economic dispatching algorithm adopted by the information network not only meets the supply and demand balance of the power system, butalso considers the economic operation of the system. The influence of various parameter changes of the power information physical system on the system can be quantitatively reflected, and the methodcan be widely applied to the fields of safety analysis, cascading failure propagation process, vulnerability evaluation and the like of the power information physical system. The method has the advantages of scientificity, reasonability, high applicability, good effect and the like.

Description

technical field [0001] The invention belongs to the field of electric power information physical system security, and relates to an electric power information physical system modeling method based on an AC power flow model. Background technique [0002] Under the background of the development of smart grid, the modern power system is evolving into a power cyber-physical system. The interaction between the power grid and the information network is becoming more and more complex. Come on for a double challenge. Therefore, the establishment of the power cyber-physical system model is of great significance to the analysis of the security problems of the power cyber-physical system. The power cyber-physical system is mainly composed of a power network and an information network. The power network includes generators, transformers, loads, transmission lines and circuit breakers to complete the production, transmission and distribution of electric energy; the information network i...

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Problems solved by technology

[0003] (1) The power cyber-physical system model based on complex network theory only takes into account the static characteristics of the power cyber-physical system, ignoring its dynamic characteristics;

[0004] (2) Although the power cyber-physical model established based on the DC power flow model has the advantages of simple calculation and fast speed, it deviates greatly from the characteristics of the actual power network;

[0005] (3) The control algorithm adopted by the existing power cyber-physical system model information network only considers the control of the power supply and demand balance of the power grid, and does not involve the economic operation of the power grid

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