Power system reliability evaluation method, device and system considering LR attack

The invention discloses a power system reliability evaluation method, device and system considering an LR attack. The method comprises the following steps: initializing parameters; calculating the utilization rate of the power transmission line, and identifying a fragile line in the system; obtaining a load reduction model considering LR attack and fragile line defense, wherein the fragile line power flow constraint in the load reduction model is related to the identified fragile line; calculating the success probability of the LR attack based on a preset random process model of the LR attack; and based on the load reduction model and the LR attack success probability, evaluating the reliability of the power system considering the LR attack by using a non-sequential Monte Carlo method. According to the method, power system reliability evaluation considering LR attacks and defensive measures thereof is realized. 本发明公开了一种考虑LR攻击的电力系统可靠性评估方法、装置及系统，所述方法包括：参数初始化；计算输电线路利用率，识别出系统中的脆弱线路；获取考虑LR攻击和脆弱线路防御的负荷削减模型，所述负荷削减模型