Review of restoration technology for renewable-dominated electric power systems

With the rapid development of renewable energy generation and multi-energy system technologies, reviewing and discussing the emerging power system restoration methods and key technologies suitable for renewable-dominated electric power systems and the Energy Internet are important. Based on this, the backgrounds of renewable-dominated electric power systems and the Energy Internet are first introduced here. Subsequently, the power system restoration process is divided into three phases: the black-start, network reconfiguration, and the load restoration phases; relative restoration strategy research on these three phases is reviewed. Moreover, the boundaries between these three phases are occasionally not sufficiently apparent or even cross in most cases owing to the severity of blackouts and other various factors. Therefore, the key technologies for power system restoration considering multiple phases are analysed in detail. Moreover, the major gaps between existing research and real-world applications and the outlooks on the restoration technologies under renewable-dominated electric power systems are discussed.