The generalized load refers to the sum of all electrical equipment within the power supply scope of a substation

including traditional loads

new type loads

distributed power sources

distributed energy storage

etc. Its flexible components can be divided into three categories

pure load type

pure power source type

and energy storage type. The generalized load is gradually becoming a research hotspot at home and abroad. Power modeling of it is an essential part of the research on the new power system. In view of the problem that most current reviews are oriented towards the electrical models of loads

the research status of the power models of typical flexible components of the generalized load is reviewed and prospected in this paper. Firstly

the modeling methods of the flexible components of the generalized load are summarized

and the similarities and differences among white box

black box

and grey box models are elaborated from the modeling principles. Then

in the order of pure load type

pure power source type

and energy storage type

the power models of the most typical

widely used and numerous flexible components in each category are classified and reviewed as white box

black box

and grey box models

and then the differences among various models are comprehensively compared. Finally

the future research directions of the modeling of the flexible components of the generalized load in the new power system are prospected.