电网安全风险闭环管控体系构建方法设计

随着电网建设的高速发展，电网事故的影响也在逐渐扩大，电网安全引起了越来越高的重视。电网结构的多重削弱更是高风险场景之一，容易引发大面积停电事故。因此，构建电网安全风险闭环管控体系对电网稳定运行至关重要。以恩施电网7次重大、较大电网安全风险事件为实例，分析了各次电网安全风险事件发生的起因及防范方法。在归纳总结各类风险防范措施特点及实施效果的基础上，基于Pareto最优演绎构建了一种应对高风险场景的电网安全风险多闭环管控体系，对风险评估和协同防控环节实施多重闭环反馈和优化，达到规避、降低电网事故风险的目标。最后通过黄冈中、南部电网实际算例，验证了所提电网安全风险闭环管控体系的有效性。

Construction method design of a power grid security risk closed-loop management and control system

With the rapid development of power grid construction, the impact of power grid accidents is also gradually increasing. Power grid security has attracted increasing attention. Multiple weakening of the grid structure is one of the high-risk scenarios, and one which is likely to cause large-scale power outages. The closed-loop management and control system of power grid security risks is essential for the stable operation of the power grid. Taking 7 major and relatively large power grid security risks of the Enshi Power Grid as an example, this paper analyzes the causes and prevention methods of each power grid security risk. An overall deduction is made based on a summary of the characteristics and implementation effects of various risk prevention measures. What is needed is a multi-closed-loop management and control system for grid security risks that responds to high-risk scenarios. Through the implementation of multiple closed-loop feedback and optimization of risk assessment and coordinated prevention and control links, the goal of avoiding and reducing the risk of grid accidents is achieved. Finally, an example of the Huanggang Central and Southern Power Grid is given to verify the effectiveness of the proposed closed-loop management and control system for power grid security risks. This work is supported by the National Natural Science Foundation of China (No. 52022035) and the Science and Technology Project of State Grid Hubei Electric Power Co., Ltd. (No. 521505190001).