Security event triggering control method for load frequency control system under DoS attack

A load frequency control and trigger control technology, applied in electrical components, reducing/preventing power oscillation, AC network circuits, etc., can solve problems such as increasing network attacks

Inactive Publication Date: 2018-07-06
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In recent years, the security control of network control systems has become a major research focus. Network control systems often adopt distributed control meth...

Method used

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  • Security event triggering control method for load frequency control system under DoS attack
  • Security event triggering control method for load frequency control system under DoS attack
  • Security event triggering control method for load frequency control system under DoS attack

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Embodiment Construction

[0063] figure 1 It is a design flow chart of the system state feedback controller of the present invention, and the flow chart is mainly used to illustrate the design steps of the state feedback controller. figure 2 It is the dynamic model of two adjacent areas in the multi-area power system load frequency control scheme, and its dynamic model is mainly used to establish the mathematical model of the system. image 3 It is the working principle diagram of the event trigger. Its working principle is only related to the current sampling signal and the last trigger signal. If the current sampling signal does not meet the trigger condition, the sampling signal will be sent to the controller, otherwise, the current sampling signal will not be sent. . A safety event triggering control method for a load frequency control system of a multi-regional power system under a DoS attack is specifically as follows:

[0064] 1. Establish a mathematical model of load frequency control system...

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Abstract

The invention discloses a security event triggering control method for a load frequency control system under DoS attack. In view of the current situation in which a load frequency control system of amulti-region power system may suffer from network attacks, DoS attack is introduced to build a switching system model in order to solve the security control problem. Moreover, in view of the current situation of limited bandwidth resources, an event triggering mechanism is introduced. The main idea of the event triggering mechanism is as follows: whether a current sampling signal satisfies a preset triggering algorithm is detected; if the current sampling signal does not satisfy the preset triggering algorithm, the sampling signal is transmitted to a controller; and otherwise, the sampling signal is abandoned. Through improvement from the two aspects, it is ensured that the system can run safely and smoothly under the premise of global stability, the number of redundant signals transmittedis reduced, the network transmission pressure is reduced, and bandwidth resources and energy required for communication are saved.

Description

technical field [0001] The invention relates to the technical field of electric power systems, in particular to a security event triggering control method for a load frequency control system of a multi-area electric power system under a DoS attack. Background technique [0002] In recent years, the security control of network control systems has become a major research focus. Network control systems often adopt distributed control methods, and the collected dynamic information and various control signals are transmitted through the network, which will inevitably increase the possibility of network attacks. . At the same time, as the scale of the power system becomes larger and the interconnection between the power grids becomes stronger, load frequency control, as an important control method for the stable operation of the power system, has also become the focus of attention. [0003] In the multi-regional power system load frequency control system, multiple nodes share the...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/24
CPCH02J3/00H02J3/24H02J2203/20
Inventor 胡松林解怀滨岳东
Owner NANJING UNIV OF POSTS & TELECOMM
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