基于UTA方法的关键基础设施系统的保护研究

Study on Protecting Critical Infrastructure Systems Based on the UTA Method

关键基础设施系统是城市的生命线,但常因突发事件频发而具有不稳定性和脆弱性。一个好的保护方案应该综合考虑关键基础设施系统的韧性和成本等多个目标,但这些目标常常相互冲突而使决策陷入困境。本研究从多目标优化角度入手,探索用UTA方法确定保护关键基础设施系统最佳方案的可行性,UTA法通过与决策者互动获取决策者的偏好信息,并基于线性规划和价值函数原理构建了决策者偏好模型。通过C县电网系统的案例分析发现UTA方法可帮助决策者在决策过程中考虑多目标之间的冲突与权衡,从而确定最满意的决策方案。

The critical infrastructure systems are the lifelines of cities,but they are unstable and vulnerable due to frequent emergencies.A good protection plan should consider multiple objectives such as resilience,cost,and etc.,which often conflict with each other and thus make it difficult to make the final decision.This study explores the potentials and applicability of the UTA method,a multi-objective technique,under the context of protecting the critical infrastructure systems.The UTA model obtains preference information by interacting with decision makers and constructs the preference model of decision makers based on the principles of linear programming and value functions.The case study of the power grid system in C county indicates that the UTA method could help decision makers to achieve tradeoffs between multiple goals in the decision-making process and finally choose the plan that the decision makers are most satisfied with.