提出了省级电网在线安全稳定预警及决策支持系统的总体目标,设计了系统的总体框架和硬件结构。以四川省电网建设的在线安全稳定预警及控制决策系统为例,分别阐述了电网安全在线分析及辅助决策子系统和离线研究子系统的主要功能和应用模式,就研制和应用中的关键问题提出了相应的解决方案。 The overall goal of on-line safety and stability early warning and decision support system for provincial power grids is proposed, and the overall framework and hardware structure of the system are designed. Taking the on-line safety and stability early warning and control decision-making system of Sichuan Power Grid as an example, this paper expounds respectively the main functions and application modes of on-line safety analysis of power grid, auxiliary decision-making subsystem and offline research subsystem, and puts forward the key problems in the research and application The corresponding solution.