Control system security dynamic event trigger control method under false data attack

Abstract

A control system security dynamic event trigger control method under false data attack designs a false data injection attack model with an observer module, a sensor module, a controller module and an actuator saturation module, and introduces a dynamic event trigger mechanism in consideration of limited communication network bandwidth resources. An improved event triggering scheme is presented. The main idea of the event triggering mechanism is to detect whether a current sampling signal satisfies a preset triggering algorithm, if so, the sampled signal is transmitted to the controller, otherwise, the sampled signal is abandoned. The method has the advantages that the improved event triggering scheme ensures that the system can operate safely and stably on the premise of global stability, meanwhile, transmission of redundant signals is reduced, the pressure of network transmission is relieved, and bandwidth resources are saved. In addition, the introduced observer module and actuator saturation module are closer to the operating environment and requirements of the power grid, the network control performance is ensured, and the expected control effect is achieved.

Description

technical field [0001] The invention relates to the technical field of electric power systems, in particular to a control method for triggering a control system security dynamic event under false data attack. Background technique [0002] Whether the power system can operate safely and stably is an important part of the power system. As a typical physical information system, power grid integrates network computing and communication between power grid components, which can effectively improve the cooperation between physical components and network components. Safe and stable operation is one of the most basic and most important goals pursued by power grids, and having a power grid that can resist physical information system attacks is the key to achieving this goal. Physical information system attacks are usually divided into two categories: false data injection attacks and denial of service attacks. False data attacks will cause the control center to fail to make correct j...

AI Technical Summary

Problems solved by technology

Disadvantages of the existing technology: 1. The traditional event trigger mechanism samples a lot of data, and a large amount of data needs to be collected for transmission when the system is stable, which increases the burden of network communication and causes excessive consumption of network resources

2. When designing the system model, the unmeasurable part of the system state is not considered, and the limited execution ability of the actuator is less considered. It is difficult to simulate the actual operation of the system, which causes difficulties for the actual application of the system

Images