Method and device for simulation of information physical system

Abstract

The invention provides a method and a device for simulation of an information physical system. The method is characterized by obtaining a plurality of dynamic subareas through dividing, then performing synchronization and interaction between an electrical physical system and an information communication system in the each dynamic subarea, and finally performing united simulation of the electricalphysical system and the information communication system in each calculation subtask. The method of the invention has the beneficial effects that: the electrical physical system is triggered accordingto timing sequence states and events of the information physical system, an interpolation operation is performed on the electrical physical system, then solving is performed on a simulation equationof the electrical physical system after the interpolation operation, so as to obtain final electrical data, and the final electrical data is transmitted back to the information communication system, so as to achieve integrated simulation of the information physical system, thereby reducing simulation complexity; in addition, the information physical system is divided into three dynamic areas, i.e., a high-speed dynamic area, a medium-speed dynamic area and a low-speed dynamic area, and synchronization and interaction of data in the multiple calculation subtasks are achieved, thereby effectively improving a simulation calculation efficiency, and providing basis for safe, reliable and economic operation of a power grid.

Description

technical field [0001] The invention relates to the field of power system simulation, in particular to a simulation method and device for a cyber-physical system. Background technique [0002] A cyber physical system (Cyber ​​Physical System, CPS) includes an electrical physical system and an information communication system. The electrical physical system simulation and the information communication system simulation in the prior art are basically separated in terms of theory and method. The electrical physical system is a time-varying system, and its electrical quantities flow through power nodes and branches in the form of voltage, current, power, etc. The electrical physical system simulation in the prior art uses a set of differential algebraic equations to describe the continuous time response of the electrical physical system grid The process is solved by numerical integration algorithms such as explicit integration or implicit integration, and the current state of th...

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Problems solved by technology

[0004] In order to overcome the shortcomings of the complex simulation process and slow simulation speed in the above-mentioned prior art, the present invention provides a simulation method and device for a cyber-physical system, which first decomposes the dynamic region of the cyber-physical system into multiple dynamic sub-regions based on the time scale, Then, according to the data interface specification, the state data synchronization and interaction between the electrical physical system and the information communication system are carried out in each dynamic sub-area; finally, based on the synchronization and interaction of the state data between the electrical physical system and the information communication system, in each dynamic sub-area The co-simulation of the electrical physical system and the information communication system is carried out in a calculation subtask, and the simulation of the electrical physical system and the information communication system in the information physical system is realized. The simulation process is simple and the simulation speed is fast.

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