With the transformation of the power system to low-carbon

the proportion of new energy installed capacity is increasing year by year

renewable energy power generation has the characteristics of intermittent

the main power generation period and peak power consumption period are misaligned

there is an imbalance between supply and demand

and the demand for flexibility in power balance is intensified

and long-term energy storage power stations have become a magic weapon to solve the problem. According to the development of long-term energy storage technology

the technical characteristics

advantages and current bottlenecks of pumped storage

compressed air

lithium-ion batteries

flow batteries

molten salt heat storage

and hydrogen energy are analyzed

and the typical application projects of the above energy storage technologies are analyzed. Then

the typical scenario applications of energy storage are analyzed from different sides of the power supply side

the power grid side and the user side

and the application comparison of seven energy storage technologies in multiple scenarios such as energy transfer

auxiliary services

black start

and smooth new energy output is expounded. The technical parameters

battery selection

system wiring

energy management and other issues of chemical energy storage demonstration project

heat storage demonstration project and mechanical energy storage demonstration project were summarized and analyzed

and finally the future energy storage power station technology was prospected.