电力信息系统的耦合建模方法

考虑电力网和信息网的耦合,对建立电力信息系统模型具有重要意义。本文以IEEE9节点系统为例,首先分析系统的运行机理,描述信息网和电力网之间的数据闭环流动全过程。然后,利用矩阵描述系统内部数据传输结构,进而建立考虑电力网和信息网耦合关系的电力信息系统模型。最后,通过PowerFactory分析负荷变化时,该模型仍可保持节点电压稳定这一特点,验证了模型的准确性。

Coupling Modeling Method for Power Cyber System

The consideration of the coupling between a power network and a cyber network is of great importance to the establishment of a power cyber system model.In this paper,an IEEE 9-node system is taken as an example.First,the operating mechanism of the power cyber system is analyzed,and the entire process of closed-loop data flow between the cyber network and the power network is described.Second,matrix is used to describe the internal data transmis?sion structure of the power cyber system,and its model that considers the coupling between the power network and the cyber network is built accordingly.Finally,it is found that when using the PowerFactory to analyze the load changes,the proposed model is still capable of maintaining the stability of node voltage,which verifies the accuracy of the novel model.