Electrochemical energy storage power station fire safety popular science knowledge
As one of the new energy technologies that developed rapidly in recent years, energy storage power station can effectively meet the demand for large-scale new energy access to the power system, and has the significant advantages of flexible adjustment. Electrochemical energy storage power station is a relatively common type of energy storage power station. With the construction and application of the energy storage power station project, the fire risk has gradually emerged. The fire and explosion accident of the "4.16" energy storage power station in Beijing has attracted strong attention from the society.
On April 16,2021, a fire broke out at an energy storage power station of Guoxuan Fuvez Company in Beijing. In the process of disposing of the south district of the power station, the north district of the power station exploded without warning, leaving two firefighters dead, one firefighter injured and one employee in the power station missing.
In recent years, the fire and explosion accidents of energy storage power stations are common. According to statistics, there were more than 30 fires of energy storage power stations worldwide in the past year. Since August 2017,29 energy storage power station fires have occurred in South Korea alone. In addition, on April 19,2019, a battery storage project exploded in Arizona, injuring four firefighters, including two of them.
Status quo and thinking
1. With the increase of the service period of the energy storage power station, the charging and discharging times of some energy storage systems will gradually be close to the design times, and the lithium battery pack reaches its service life, and its fire safety problems will gradually appear.
2. In the design specification of electrochemical energy storage power station, there is a lack of targeted fire control design requirements, basically according to the general industrial building design, and the battery performance indicators in the energy storage system standards are vague, and the requirements of emergency response and rescue measures are low, resulting in easy supervision omissions.
3. As a worldwide fire safety problem of lithium battery fire disposal, it is necessary to further deepen the safety research of energy storage power station system, and focus on fire prevention and control, early warning, accident disposal and other aspects.