English:Cities serve as the political, economic, and cultural centers of a region or even a nation. Infrastructure systems such as electricity, water supply, gas supply, and transportation are fundamental to the normal functioning of a city. Among these, electricity—as the foundation of other infrastructure—is particularly critical for security.Currently, urban power grids face two major external threats: extreme weather events and deliberate attacks. Therefore, constructing coupling models for urban infrastructure systems, identifying vulnerable components, and implementing targeted reinforcement measures are crucial steps in ensuring urban societal safety.

中文:城市是城市成为一个区域乃至国家政治、经济、文化的中心。电力、供水、供气、交通等基础设施是支撑城市正常运行的基础，而电力作为其他基础设施的基础，其安全性尤为重要。目前，城市电网安全面临两类严重的外部威胁。一是极端天气，二是蓄意攻击。因此，构建城市基础设施系统耦合模型，评估系统的脆弱性原件并采取针对性的加固措施，是保障城市社会安全的重要举措。