基于SA-PSO-AHP的火电厂控制系统信息安全威胁评估

火电厂控制系统信息安全问题形势严峻，针对某电厂的信息安全测评，利用层次分析法建立分层递进分析模型，通过模拟退火算法改进粒子群的方法解决判断矩阵一致性问题，可以有效解决信息安全威胁评估中存在的主观性强和不确定性的弊端，对火电厂控制系统的应用表明，该方法既能够充分反映评判要素及过程的模糊性，也可以减少个人主观因素带来的影响，能够较好地得出评价结果。

Assessment on the Threat to the Information Security of Power Plant Control System Based on SA-PSO-AHP Method

Due to the severe situation of information security in power plant control system, based on the information security evaluation of a power plant, a hierarchical progressive analysis model is established by using analytic hierarchy process (AHP) model. And then the consistency problem of judgment matrix is solved through the enhancement of particle swarm optimization (PSO) method in combination with simulated annealing (SA) algorithm, which can effectively overcome the drawbacks such as strong subjectivity and uncertainties in the current information security threat assessment. The practice in the thermal plant shows that this method can not only fully demonstrate the application of the fuzziness of the evaluation elements and processes, but also reduce the impact of individual subjective factors such that satisfactory evaluation results can be achieved.