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A control method for AC/DC microgrid cluster system under dos attack

A technology of a cluster system and control method, which is applied to the layout of AC and DC network circuits, AC network circuits, electrical components, etc., can solve the problem that the control method is no longer applicable, and achieve the effect of improving the control effect and the power distribution accuracy.

Active Publication Date: 2022-06-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relying on understanding the system structure to eliminate the effects of DoS attacks, in AC-DC networked microgrid clusters, with the aging of equipment and the influence of physical environment, the structural parameters are constantly changing, making these control methods no longer applicable

Method used

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  • A control method for AC/DC microgrid cluster system under dos attack
  • A control method for AC/DC microgrid cluster system under dos attack
  • A control method for AC/DC microgrid cluster system under dos attack

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077]

In the above formula, k

P,i

and k

i,i

are the proportional coefficient and integral coefficient of the i-th BIC power loop PI controller, respectively, and s is the pull

Plath operator;

Step 6: establish a model-free predictive control model;

The initialization prediction output prediction control increment is described by the following formula:

[0081]

In the above formula, k

*

Represents the last communication moment, which is at k

*

k predicted at time

*

+1 time BIC parameter

Test power, k=k+l, l=1,2,...; is the kth

*

k predicted at time

*

normalized mean at time +l‑1

Increment; Δx

i

(k

*

+l) is the kth

*

The difference between the normalized value of the ith microgrid at time +1 and the normalized value of its rated parameters;

is the control function of the last communication time, ρ is the penalty factor, and λ is the weight factor, which can be described by the following formula:

[0083]

In the above formula,...

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Abstract

The invention provides an AC / DC microgrid group control method under DoS attack, belonging to the technical field of AC / DC microgrid control. The invention aims at the deficiency that the power distribution accuracy of each microgrid is affected by the line impedance and DoS attack in the AC / DC microgrid cluster system. The distributed control method based on the event trigger mechanism combines the model-free predictive control with the DoS attack, and utilizes the model Predict and compensate the output under conventional DOS attacks, so that the control effect of the system will not be affected by DOS attacks, and at the same time improve the power distribution accuracy of each micro-grid between the AC and DC micro-grid cluster systems, without the need for exact models and parameters , to improve the control effect of the system under DoS attack.

Description

A control method of AC and DC microgrid cluster system under DoS attack technical field The invention belongs to the technical field of AC / DC micro-grid control, be specifically related to triggering based on an event under a kind of DoS attack The AC-DC microgrid group control method. Background technique In the face of the uncertainty and intermittency of renewable energy generation, microgrids are subject to the friendly integration of resources and loads. to widespread attention. Due to the hybrid electricity consumption form of AC and DC, the AC-DC hybrid microgrid can effectively improve the renewable energy energy efficiency and reduce the power loss of the converter. With the ever-increasing and complex electricity demand, AC and DC micro-electric The network is clustered between multiple AC and DC microgrids through different bidirectional interconnection converters (BICs), which can further Improve the utilization of renewable energy and the reliability...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J4/00H02J5/00
CPCH02J4/00H02J5/00H02J2203/10H02J2203/20Y02E60/60
Inventor 李铁山杨寒卿龙跃陈俊龙
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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