Technical FAQs 4

What is variable-speed pumped storage (VSPs) technology?

As the most advanced pumped storage technology internationally, variable-speed pumped storage (VSPS) technology is the inevitable direction for the development of pumped storage technology in China.

Can pumped storage stations be used as energy storage support?

With China continuously scaling up the construction of integrated clean energy bases like “hydro-wind-storage” and new energy bases such as “Shagohuang”, pumped storage stations, especially variable-speed ones, will be more widely applied as energy storage support in regional grids (China Power, 2023).

What are pumped storage units?

Characteristics of technology Traditional pumped storage units typically use synchronous motors, meaning the generator and turbine must maintain a constant speed to synchronize with the grid. Consequently, these units are referred to as fixed-speed units.

How are pumped storage costs borne by end users?

The capacity charges for pumped storage power and losses are incorporated into the unified accounting of operating expenses for local provincial-level grids and are then passed on to end users through the sale of electricity. This means that pumped storage costs can be borne by end users.

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