配电网信息物理故障的耦合度计算方法

配电网信息物理系统(CPSDN)中信息系统和物理系统深度耦合,使得信息和物理故障可以相互耦合对配电网的运行造成影响.文中提出一种配电网信息物理故障的耦合度计算方法,从故障危害的角度评估信息与物理系统间的耦合程度.首先,在分析信息物理协同攻击(CCPA)对CPSDN影响的基础上,综合考虑攻击造成的故障危害及节点的防护水平...

Calculation Method for Coupling Degree of Cyber-Physical Fault in Distribution Networks

Since the cyber system and the physical system in the cyber-physical system for distribution network (CPSDN) are deeply coupled, the cyber and physical failure can couple with each other to affect the operation of the distribution network. This paper proposes a coupling degree calculation method, which evaluates the coupling degree between the cyber and physical system from the perspective of fault hazard. Firstly, based on analyzing the impact of coordinated cyber-physical attack (CCPA) on CPSDN, considering the fault hazard caused by attacks and the protection level of nodes, a probabilistic expression of faults is given. Then, the correlation degree of node failures between heterogeneous systems is calculated through the coupling degree between nodes (CDBN), and the coupling degree between node and system (CDBNS) and coupling degree between systems (CDBS) are calculated based on CDBN. Finally, a distribution network with three feeders is used as an example to verify the rationality and effectiveness of the proposed method.