An intelligent substation relay protection vulnerability assessment method

A smart substation and relay protection technology, which is applied in the field of power stations, can solve the problems that the model is easy to become large and the Petri net model does not consider the topology structure, etc., and achieves the effects of strong innovation, strong practicability, and high evaluation accuracy

Inactive Publication Date: 2019-04-16
GUANGDONG UNIV OF TECH
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Problems solved by technology

The Petri net can better represent the state of the attack, the specific behavior and the progress of the attack, but its model tends to become huge, and the Petri net model does not consider the topology structure, and does not analyze the vulnerability of the entire system from a global perspective

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  • An intelligent substation relay protection vulnerability assessment method
  • An intelligent substation relay protection vulnerability assessment method
  • An intelligent substation relay protection vulnerability assessment method

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[0041] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner" and "outer" are based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing ...

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Abstract

The invention discloses an intelligent substation relay protection vulnerability assessment method, which comprises the following steps: obtaining real-time vulnerabilities of terminal hosts and corresponding computer authorities, generating a vulnerability assessment model by utilizing an attack graph in combination with an intelligent substation secondary system network connection relationship,and carrying out scoring quantification on related indexes by adopting a CVSS3.0 system; The attack success probability of each state node is calculated respectively, the influence function caused bythe attack of the vulnerability of each state node is calculated respectively, the vulnerability of each state node is calculated respectively, the vulnerability of each state attack sequence is calculated respectively, and the overall vulnerability of the information network in the intelligent substation to protection rejection / misoperation is calculated respectively; The method has high evaluation accuracy, plays an important role in guiding the design of the secondary system of the intelligent substation, and is high in practicability and innovativeness.

Description

technical field [0001] The invention relates to the technical field of power stations, in particular to a method for evaluating the vulnerability of relay protection in intelligent substations. Background technique [0002] With the development of the smart grid, the realization of the protection, control and monitoring functions of the smart substation is increasingly dependent on the information network. However, due to the existing unpatched security loopholes in the information network, and its rapid development, the security loopholes will also increase, and its security is not as high as that of the power grid itself. With the increasing dependence of smart substations on information networks, network security issues are becoming more and more prominent in power systems. [0003] The correct realization of relay protection function is the guarantee of safe and reliable operation of power network. The relay protection function under the smart substation is all realize...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06
Inventor 何瑞文彭浩郑浩聪
Owner GUANGDONG UNIV OF TECH
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