一种新的电力信息系统安全模型及其评价方法

分析了电力信息系统的安全形势和面临的安全威胁,借鉴现有信息系统的安全模型和体系框架,建立了一种新的电力信息系统安全模型,确定了影响电力信息系统安全的众多因素及其子因素。采用模糊数学理论,给出了多级模糊综合评判模型及其评价方法,根据电力信息系统的特点确定了模糊评判矩阵和各因素权重系数,以模糊度量方式评价了电力信息系统的安全性能。通过实例计算,证明该方法能够确定电力信息系统的安全级别,从而验证了文中所述模型的实用性和评估方法的有效性。

One kind of new security model of power information systems and its assessment methods

Based on the present situation and the security threat to Power Information System(PIS),a new PIS security model was built by referencing existing information system security model and framework,and determining many factors as well as their sub-factors affecting PIS security.By using fuzzy theory,a multi-class fuzzy comprehensive judgment model and its evaluation method were given.According to the features of PIS,the fuzzy judgment matrix and the weight coefficients of factors were determined.The security performance of PIS was evaluated in a way of fuzzy measurement.Calculation examples prove that this method can determine PIS security level,hence validating the model is practical and the method is effective.