A false data injection attack design and defense method for DC microgrid

A DC microgrid, false data technology, applied in the direction of load balancing in DC network, parallel operation of DC power supply, electrical components, etc.

Active Publication Date: 2021-01-01
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in actual situations, attackers may learn some key parameters by lurking in the system, and launch coordinated attacks at specific moments, resulting in precise and targeted strike effects, such as the Stuxnet incident at the Iranian nuclear power plant

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  • A false data injection attack design and defense method for DC microgrid
  • A false data injection attack design and defense method for DC microgrid
  • A false data injection attack design and defense method for DC microgrid

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Embodiment Construction

[0063] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0064] The content of the present invention can be divided into two parts, the first part is to design a new type of FDAA, and the second part is to propose a corresponding defense method for the designed FDAA.

[0065] Such as figure 1 As shown, in order to analyze the potential concealed FDIA in the DC microgrid, the new energy generation unit is simplified as a DC voltage source, which supplies power to the current load through a resistor-inductor-capacitor filter. The dynamic model of generating unit i is as follows:

[0066]

[0067] where A ii ∈ R 3×3 is the circuit parameter, b i ∈ R 3×1 , g i ∈ R 3×1 is the input parameter, M i ∈ R 3×3 is the line coupling parameter, C i ∈ R 3×3 is the output parameter, x i (t)∈R 3×1 is the system state (current and voltage), d i (t)∈R 2×1 is the external disturbance, ξ i (t...

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Abstract

The invention discloses a false data injection attack design and defense method of a DC microgrid. Inject malicious false data into the network communication messages in the secondary control layer of the DC microgrid. At the same time, considering the initial state estimation deviation and measurement noise in the original detection process, a covert data injection attack method is designed to disturb the current / voltage without affecting the existing attack detection indicators. The analysis shows that the covert data injection attack will affect the average voltage value of the coupling point in the DC microgrid. The proportional-integral dynamic average consensus algorithm is used to estimate the average voltage value of the coupling point in the DC microgrid, and based on the average voltage value of the coupling point Voltage deviation detects this covert data injection attack. Finally, the proportional-integral compensation mechanism is used to compensate the average voltage deviation of the coupling point, adjust the secondary control input, and re-establish the voltage balance in the DC microgrid.

Description

technical field [0001] The invention relates to the field of electric power information security of industrial control systems, in particular to the design and defense method of false data injection attack for secondary control network in DC microgrid Background technique [0002] In recent years, with global warming and massive consumption of fossil energy, distributed new energy generation units have emerged as the times require, such as photovoltaic power generation units, wind power generation units, etc. The power generation of new energy power generation units will fluctuate with weather conditions, so if it is directly injected into the grid, it will cause non-negligible disturbances. As a new type of aggregation structure on the power distribution side, the microgrid is generally composed of new energy power generation units, energy storage equipment and flexible loads, which can well accommodate the uncertainty of new energy power generation. The microgrid itself i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH02J1/10H02J1/14H04L63/1466
Inventor 刘孟祥程鹏潘骏陈积明欧阳柳姚一杨陈嵘王文华方景辉唐锦江赵志军徐晨金军
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO
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