Investigation report on the accident of new energy storage equipment

What caused a fire accident in a lithium battery energy storage system?

ident occurred in the lithium battery energy storage system of a power station in Shanxi province, China. According to the investigation report, it is determined that the cause of the fire accident of the energy storage system is the excessive voltage and current caused by the surge eff

What happened to the energy storage system?

The energy storage system was installed and put into operation in 2018, with a photovoltaic power generation capacity of 3.4MW and a storage capacity of 10MWh. The explosion destroyed 0.5MW of energy storage batteries. It is understood that the lithium-ion battery cell supplier of the energy storage station is LG New Energy.

What happens if the energy storage system fails?

If the energy storage system lacks effective protective measures, it may cause the expansion of battery accidents. In case of a naked fire, the flammable gas may reach a certain concentration and cause an explosion. If the energy storage device is arranged indoors, a chain explosion accident may occur.

What is the explosion hazard of battery thermal runaway gas?

The thermal runaway gas explosion hazard in BESS was systematically studied. To further grasp the failure process and explosion hazard of battery thermal runaway gas, numerical modeling and investigation were carried out based on a severe battery fire and explosion accident in a lithium-ion battery energy storage system (LIBESS) in China.

Are there fires and explosions in lithium battery energy storage stations?

There have also been considerable reports of fires and explosions in lithium battery energy storage stations. According to incomplete statistics, there have been over 30 incidents of fire and explosion at energy storage plants worldwide in the past 10 years.

Does the battery energy storage industry use system analysis?

In view of the analysis of the complexity of socio-technical systems, there are few cases in which the battery energy storage industry uses system analysis methods to carry out cause analysis. Therefore, based on the STAMP model, the thermal runaway diffusion explosion accident of the BESS was systematically analyzed.