The integration of energy storage systems into transmission and distribution networks has the potential to provide significant benefits at all points in the supply chain. Increased penetration of distributed generation, particularly based on renewable energy resources, is driving the need for distributed energy storage to provide services. That will allow existing network assets to continue to deliver reliable, high quality electricity.
The installation in UK will yield dynamic voltage control in the distribution system and at the same time enable dynamic storage of surplus energy from wind farms, which can be utilized to level out peaks in grid loading and increase grid stability. Using this strategy, the power harnessed from the wind can be put to more efficient use than would otherwise be possible.
The dynamic energy storage system deployed by UK Power Networks was designed and built as a turnkey project by ABB. The battery storage is an add-on to the well established SVC Light technology, a fast IGBT based converter used for tasks such as voltage control, flicker mitigation and active filtering.
Li-ion battery technology was selected for its long calendar lifetime, high power density and high round-trip efficiency. Safety and protection is ensured by interlocking and supervision and control from cell to system level.
The ABB energy storage system in UK includes eight stacks of battery modules housed in a 25 sqm building. The modules can store up to 200 kilowatt hours (kWh) of electrical energy.
该新闻已收录在《储能产业趋势》2011年6月刊。