Schematic diagram of the grid-side energy storage power station

What can pumped-storage power stations do?

In the special areas where new energy sources are concentrated, the open space of pumped-storage power stations can be used to build solar energy and wind energy storage systems, and new energy sources can be connected and coupled in pumped-storage power stations to build a new generation of pumped-storage stations.

Why are battery energy storage systems becoming a primary energy storage system?

As a result, battery energy storage systems (BESSs) are becoming a primary energy storage system. The high-performance demand on these BESS can have severe negative effects on their internal operations such as heating and catching on fire when operating in overcharge or undercharge states.

How does a power grid work?

The power grid provides various functions such as peak shaving, frequency modulation, and accident reserve. It can also improve the ability of the grid to accept new energy and quickly stabilize fluctuations.

What is electrochemical energy storage system with inverters?

The electrochemical energy storage system with inverters can independently output active and reactive power to meet the compensation requirements of the frequency and voltage of grid power, respectively.

What is pumped power station?

The new generation of pumped-power station with multiple energy sources can provide sufficient reactive power to meet the system reactive power demand during accidental voltage drops in the UHV power grid, and provide large-capacity reactive power compensation to the system together with the synchronous condenser.

What is a fixed-speed pumped-storage power station?

The fixed-speed pumped-storage power station has a step-type output. Take one of pumped storage power stations as an example. It takes only about 16 s from −50 MW to −300 MW, and just 14 s from −300 MW to 0 MW. It means a 300 MW unit trips several times in one day, which has a great impact on the Fujian province power grid.