Power System Energy Storage Technologies

ISBN: 9780128129029 出版年：2018 页码：101 Breeze, Paul Academic Press_RM

Electrical energy storage can play an important role in electricity supply by storing off-peak energy for delivery in periods of peak demand and by helping to stabilize the generation from intermittent resources such as wind and solar power. Analysis suggests that for optimum grid stability, 15% of capacity should be based on energy storage. However, the storage of electricity has proved difficult to master. The main large-scale energy storage technologies are pumped storage hydropower, compressed-air energy storage, and, at the lower capacity range, batteries. For smaller-scale storage supercapacitors and flywheels can be used and small superconducting magnetic energy storage rings have been used in some grid stability applications. Pumped storage hydropower accounts for most of the capacity already in place and much of this was built to support nuclear-generating capacity. There is interest today in energy helping the integration of intermittent renewable capacity.