Multi-region interconnected power system load frequency control method under denial of service attack

A technology of load frequency control and denial of service attack, applied in the field of power system

Active Publication Date: 2021-10-26
SHANXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, considering the presence of DoS attacks in communication networks and introducing wind power systems with doubly-fed induction generator wind turbines into multi-regional interconnected power systems, it will be more challenging to study the resilient LFC problem

Method used

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  • Multi-region interconnected power system load frequency control method under denial of service attack
  • Multi-region interconnected power system load frequency control method under denial of service attack
  • Multi-region interconnected power system load frequency control method under denial of service attack

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Experimental program
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Effect test

Embodiment 1

[0090] A load frequency control method for multi-area interconnected power systems under denial-of-service attacks, which integrates wind power systems based on doubly-fed induction generator wind turbines into the power system, and considers the impact of DOS attacks and delays during network transmission, specifically including the following step:

[0091] 1. Construct the LFC system model of the multi-area interconnected power system with wind power system, as follows:

[0092] The LFC of the multi-area interconnected power system mainly includes: 1) keeping the system frequency within a given range; 2) controlling the stability of the exchange power of the tie lines of the power system. figure 1 An LFC system model for the i-th region in a multi-region interconnected power system of a wind power system with doubly-fed induction generator wind turbines is described. Among them, the dynamics of the model of wind power generation based on double-fed induction generator wind ...

Embodiment 2

[0204] Embodiment 2: Simulation example

[0205] Taking the three-region interconnected power system as an example, the feasibility of the proposed multi-region interconnected power system load frequency control method under DoS attack (i.e., the stability of the interconnected power system integrating renewable energy and EVs) is verified. Table 1 gives the parameter values ​​for the wind power system (ie, Equation 1), and Table 2 gives the parameter values ​​for the three regions with renewable energy and electric vehicles (ie, Equation 2).

[0206] Select the upper bound τ of the network-induced delay m =0.05s, attack parameter T=1s, Assume parameter υ 1 = υ 2 = 1.05, α 1 = 0.0015, α 2 =0.5,λ 1 =λ 2 = 1, H∞ performance index γ=2, by solving the matrix inequality condition in Theorem 2, the gain K of the controller in formula (8) can be obtained j =diag{0.8239 0.4704, 0.85690.3909, 0.8848 0.1415}.

[0207] Table 1 Wind power system parameters

[0208]

[0209...

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Abstract

The invention belongs to the technical field of power systems, and discloses a multi-region interconnected power system load frequency control method under denial of service attack. Aiming at the problem of load frequency control of the multi-region interconnected power system with the wind power system under denial of service attack and network-induced delay, the method comprises the following steps: firstly, constructing an LFC system model of the multi-region interconnected power system with the wind power system, and then, on the basis of a T-S fuzzy model, under the condition of denial of service attack (DoS), establishing a time delay system with attack switching, and giving a stability criterion of a multi-region power system and a design method of a fuzzy controller by using a Lyapunov stability theorem and an LMI method; and finally, verifying the effectiveness of the method through simulation examples.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to a load frequency control method of a multi-area interconnected power system under a denial of service attack. Background technique [0002] A multi-area interconnected power system is a large complex system consisting of multiple control areas connected by tie lines, whose successful operation requires the matching of total power generation with total load demand and associated system losses. Load frequency control (Load frequency control, LFC) can effectively track load changes and disturbances through the active power of the generator set, so that the frequency deviation of the power system is still close to zero when the power system is disturbed, and it can ensure the maintenance of the exchange power of the multi-regional power system. at a predetermined value to achieve power system frequency stability. Generally, the Area Control Error (ACE) signal forme...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/24H02J3/38
CPCH02J3/00H02J3/241H02J3/381H02J2203/20H02J2203/10H02J2300/28Y02E10/76
Inventor 池小波张灵刘宇韬贾新春
Owner SHANXI UNIV
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