Security risk assessment method for intelligent substation automation system

An automation system and intelligent substation technology, applied in the direction of instruments, data processing applications, calculations, etc., can solve the problems of threat factors and system unreliable operation power system consequences lack of analysis, lack of

Active Publication Date: 2012-12-12
广东立胜综合能源服务有限公司 +2
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  • Abstract
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Problems solved by technology

[0004] Most of the above existing risk assessment methods independently assess equipment and information, lack of function-oriented analysis of the overall business complet...

Method used

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  • Security risk assessment method for intelligent substation automation system
  • Security risk assessment method for intelligent substation automation system
  • Security risk assessment method for intelligent substation automation system

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Embodiment Construction

[0045] In order to describe the present invention more specifically, the risk assessment method of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] Such as figure 1 As shown, a security risk assessment method for an intelligent substation automation system includes the following steps:

[0047] (1) Build a function tree and a function graph.

[0048] First, according to the IEC 61850 standard for substation information model, the intelligent substation automation system is decomposed into different levels of functions, and then the function tree of the system is constructed;

[0049] Such as figure 2 As shown, DSAS represents the intelligent substation automation system, which is decomposed into three first-level functional nodes (f 1 , f 2 , f 3 ), f 1 is decomposed into two secondary function nodes (f 11 , f 12 ), f 2 is decomposed into three secondary functional nodes (f 21 , ...

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Abstract

The invention discloses a security risk assessment method for an intelligent substation automation system, which comprises the following steps of: (1) constructing a function tree and a functional diagram; (2) calculating the value at risk and the risk grade of a leaf function node; and (3) calculating the risk grade of each function node from bottom to top so as to determine the risk grade of the system. With the method disclosed by the invention, the service function of the intelligent substation automation system is used as the basis, security risk confronted by the intelligent substation automation system can be truly reflected under different operation conditions; influence on the security of the intelligent substation automation system by software and hardware is comprehensively considered; a reference can be provided for the free distribution scheme of the intelligent substation automation system function on different pieces of intelligent electronic equipment by the obtained risk grades of the intelligent substation automation system and the function node; and a favorable technical support is provided for the security risk management for the intelligent substation automation system.

Description

technical field [0001] The invention belongs to the technical field of power system safety risk assessment, and in particular relates to a safety risk assessment method for an intelligent substation automation system. Background technique [0002] The substation is an important part of the power system. The substation automation system is a system that realizes the operation and management automation of the substation through computer network and communication technology. It is mainly used for the monitoring, control and protection of the substation. The IEC 61850 standard is currently the only international standard in the field of substation automation. The intelligent substation automation system based on the IEC 61850 standard is the development direction of the substation automation system in the future. Due to the higher degree of integration and automation, the reliability and safety of the smart substation automation system have been widely concerned. Past accident s...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
Inventor 郭创新俞斌陆海波
Owner 广东立胜综合能源服务有限公司
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