A Review of Grid Outage Defense Techniques Under Natural Disasters

In recent years, the extreme external disasters such as typhoons, mountain fires, ice-covering and torrential rains have occurred frequently, which have posed a major threat to the safe and stable operation of the power system. There is an urgent need to realize the situational awareness, online decision-making and integrated collaborative prevention and control of the whole network. Based on the new situation of “dual-carbon” energy transition and new power system construction, this paper discusses the new characteristics of extreme external disasters of the power system and their impacts on the grid, constructs a whole-process defense system for the power system against extreme external disasters based on the architecture of decision-making information flow and buffer network, and proposes the expansion of the power outage defense line to the system level and equipment level. Finally, the development direction of proactive defense technology for the power system under extreme external disaster is outlooked.