城市弹性电网极端灾害防御与恢复技术

Extreme disaster defense and recovery technologies for urban resilient grid

随着“双碳”目标的提出和推进,城市电网作为电力保障的重要环节,逐渐呈现出新的形态。分布式能源大规模接入、电力电子设备广泛应用和可控负荷推广使用,使得城市电网能源生产、传输、消费方式发生深刻变化。近年来,极端灾害频发,对城市电网产生严重威胁,亟须建设城市弹性电网,从灾前规划、灾中运行、灾后恢复各个环节提升城市电网应对极端灾害的能力。首先,从城市弹性电网特征出发,分析城市电网弹性研究现状以及评估、规划、调度和恢复等方面所面临的挑战;然后,针对城市弹性电网4类核心技术,总结城市弹性电网极端灾害防御与恢复关键问题及核心方法,介绍我国城市电网弹性提升建设实践;最后,对城市弹性电网极端灾害防御与恢复技术发展路径进行展望。

With the proposition and advancement of the double carbon goal,as a crucial link in power supply,is gradually adopting new forms.The large-scale distributed energy resources integration,extensive application of power electronic devices,and promotion of intervenable loads are fundamentally transforming the production,transmission,and consumption of energy in urban grids.In recent years,frequent extreme disasters have posed severe threats to the urban grid,necessitating the construction of resilient urban power grids to enhance their ability to cope with extreme disasters through pre-disaster planning,in-disaster operation,and postdisaster recovery.This paper firstly introduces the characteristics of resilient urban power grids,analyzing the current state of research on grid resilience and the challenges faced in assessment,planning,operation,and recovery.Furthermore,it summarizes the key issues and core methods for defense and recovery of the resilient urban power grid against extreme disasters,focusing on four core technologies of urban resilient grids.Then,the practical efforts in enhancing the resilience of urban power grids in China are introduced.Finally,the paper provides an outlook on the development path of technologies for defense and recovery of resilient urban power grids against extreme disasters.