A security risk assessment method for intelligent substation automation system
A technology for automation systems and smart substations, applied in the direction of instruments, data processing applications, calculations, etc., can solve problems such as lack of analysis of power system consequences, threat factors, and unreliable operation of the system
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[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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