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Petri network based method for stabilizing load side voltage under network attack

A technology for stabilizing loads and network attacks. It is used in AC network voltage regulation, AC network circuits, circuit devices, etc. It can solve the problems of voltage loss and power loss, large voltage deviation and power loss, and achieve flexible modeling and powerful system. The effect of performance analysis capabilities

Active Publication Date: 2018-06-29
NANJING NARI GROUP CORP +2
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  • Abstract
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Problems solved by technology

In the transmission of electric energy, there will be voltage loss and power loss. The farther away from the power supply, the greater the voltage deviation and power loss

Method used

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  • Petri network based method for stabilizing load side voltage under network attack
  • Petri network based method for stabilizing load side voltage under network attack
  • Petri network based method for stabilizing load side voltage under network attack

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Embodiment Construction

[0039] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0040] The present invention proposes a Petri net-based method for stabilizing the load-side voltage under network attacks. After analyzing the discrete events of the on-load tap changer and the continuous dynamic behavior of the load during the voltage regulation process, the method utilizes a programmable sequence The petri net can combine the characteristics of discrete and continuous dynamic behaviors of two different natures in the modeling process, model the discrete behavior of the regulation process, and combine the mathematical model describing the continuous dynamic behavior of load change, so that Deriving a hybrid mathematical model of the power system after a cyber attack. This method not only proves that the on-load transformer can p...

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Abstract

The invention discloses a Petri network based method for stabilizing load side voltage under network attack, which includes steps of step S1, confirming a continuous state variable and a discrete state variable of a description system according to a dynamic behavior and a mixing behavior of the load change in an electric system; step 2, applying the petri network to perform mathematical description on the discrete dynamic behavior of a loaded voltage-regulating transformer, and building the petri network model for describing the discrete dynamic behavior; step 3, performing mathematical description on the continuous behavior of the load change, describing the continuous state by the differential equation and describing the restriction condition by a transition condition; step 4, model simulation and analysis. The method proves that the loaded transformer plays a positive role in voltage regulation in the power distribution system and is also benefit to solve the big disturbance of themixing system.

Description

technical field [0001] The invention relates to a Petri net-based method for stabilizing load-side voltage under network attack, and belongs to the technical field of power system security analysis. Background technique [0002] With the development strategy of my country's Energy Internet proposed, academia has carried out research in many related fields. Energy Internet can be regarded as a combination of traditional power system and distributed new energy. An interactive power grid physical information fusion system composed of communication networks, etc., in which information security is a stepping stone to ensure the healthy development of the Energy Internet. Based on the rapid development of smart grid information technology platforms, network attacks are attacks on the system by using the information network security vulnerabilities of the power secondary system, and the power communication heterogeneous network or data acquisition and monitoring network and remote...

Claims

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Application Information

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IPC IPC(8): H02J3/12
CPCH02J3/12H02J2203/20
Inventor 孙军盛立健汝雁飞付蓉徐悦
Owner NANJING NARI GROUP CORP
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