A Priority Sorting Method for Communication Node Maintenance Considering Cyber-Physical Coupling

Abstract

The invention provides a communication node overhaul priority ranking method considering information physical coupling, and belongs to the field of power information physical systems. The method comprises the following steps: firstly, calculating an absolute value of a power flow value of each branch of a power grid to obtain a load rate of each branch of the power grid, and constructing a load rate matrix; Generating an extended range power generation transfer factor matrix; Based on the load rate matrix and the broadened power generation transfer factor matrix, calculating a sensitivity matrix considering physical importance; Then calculating a communication node importance index corresponding to each power grid node; And finally, arranging the communication nodes in a descending order according to the importance indexes of the communication nodes to obtain a communication node overhaul priority ranking scheme. The method can be applied to formulating a communication node maintenancescheme of an electric power communication network, and the importance of the communication nodes is quantitatively evaluated from the perspective of information physical coupling, so that the maintenance priority of the communication nodes is determined, and a more excellent and reasonable scheme for the reliability of an electric power system is obtained.

Description

technical field [0001] The invention belongs to the field of electric power cyber-physical systems, and in particular relates to a communication node maintenance priority sorting method considering cyber-physical coupling. Background technique [0002] In the power system, the safe operation of the physical grid is increasingly inseparable from the measurement and control of the communication side, making the modern power system a power information physical coupling system. The evaluation of the importance of communication nodes is also inseparable from its influence on the control of the physical side. In different physical grid power flow conditions, the control requirements for communication nodes are different. At present, it is often difficult for dispatchers on the secondary side of the power system to evaluate the importance of communication nodes from the perspective of the primary side, so as to formulate the most reasonable maintenance plan for communication nodes...

AI Technical Summary

Problems solved by technology

However, the importance of the actual communication nodes is different in different physical states. In the actual field, the staff often cannot determine the most important communication nodes for the physical system, and the maintenance plan is not reasonable enough to ensure the reliability of important communication nodes in the most reasonable way.

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