电力系统韧性评估与提升研究综述

Review of the assessment and improvement of power system resilience

随着极端天气(如飓风、地震和洪水)和人为攻击(网络、物理攻击)发生频率的不断提高,对电力系统安全稳定运行造成了严重影响,长时间停电和基础电气设施损坏的概率显著增加。为减小停电事故所带来的经济损失与社会影响,构建具备抵御力、适应力、恢复力的高韧性电力系统,无疑有着重要的理论价值与现实意义。针对此,首先,概述了电力系统韧性的基本概念和主要特征,比较了其与可靠性、安全性、鲁棒性之间的差异。其次,建立了从灾害建模到系统响应的韧性评估框架,依据静态评估和动态评估将韧性指标进行了分类,并进一步梳理了电力系统韧性评估指标体系。另外,从故障预防、故障响应、故障恢复3个方面出发,探讨了提升电力系统韧性的关键技术。最后,对电力系统韧性研究领域的未来发展方向进行了展望。

The frequency of extreme events(e.g.,hurricanes,earthquakes,and floods)and artificial attacks(cyber and physical ones)has increased dramatically in recent years,and these events have severely affected power systems ranging from long outage times to major equipment destruction.To reduce the economic loss and social impact caused by power failure,it is of significance to build highly resilient power systems with defense,adaptability,and restoration ability.First,the basic concept and main characteristics of power system resilience are elaborated,and the differences among power system resilience and reliability,security,robustness are compared.Secondly,a framework of resilience evaluation from disaster modeling to system response is constructed,and the resilience index system is reviewed comprehensively,while two categories of resilience indices for static and dynamic assessment are considered.Further,the key technologies of improving the power system resilience are discussed from the three aspects of fault prevention,response,and recovery.Finally,the potential research directions of power system resilience are prospected.