微型电脑应用

电力信息系统网络安全容易受到攻击，为此提出电力信息系统网络安全态势智能评估方法。搭建电力信息系统网络层次化结构，设计安全评估模型，从攻击数据、攻击状态、流量监测等原始数据中获取攻击源数目、攻击频率，衡量安全态势的指标，通过服务级、主机级、系统级和多级网络4种层次的安全态势值分级计算，实现电力信息系统网络安全态势智能评估。经实验验证，所提出的方法能够有效评估电力信息系统网络遭受攻击时的攻击类别与威胁等级，且智能评估后的可信度最高达到0.8,容错性系数在0.92左右波动，因此可信度与容错性更高。

The network security of electric power information system is easy to be attacked, hence, an intelligent assessment method of electric power information system network security situation is proposed. A hierarchical structure is used for the power information system network, a security assessment model is built to obtain the number of attack sources and attack frequency from the original data such as attack data, attack status and traffic monitoring, and measure the indicators of the security situation. It realizes the intelligent assessment of the power information system network security situation through the hierarchical calculation of the security situation values at the service level, host level, system level and multi-level network. The experimental results show that this method can effectively evaluate the attack category and threat level when the power information system network is attacked, and the highest credibility after intelligent evaluation is 0.8, and the fault tolerance coefficient fluctuates around 0.92, so the credibility and fault tolerance are higher.