Failure Event - France, Ariege, Perles-et-Castelet - 1 Dec 2020
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Overview
Event Details
| |
|---|---|
| Location: | France, Ariege, Perles-et-Castelet |
| Capacity (MW): | 0.5 |
| Capacity (MWh): | 0.5 |
| Battery Module: | Narada [LFP] |
| Integrator: | |
| Application: | Hybrid Supercacitor plus Storage System |
| Installation: | Substation |
| Enclosure Type: | Container |
| Event Date: | 1 December 2020 |
| System Age (yr): | 0 |
| Extent of Damage: | Fire |
| State During Accident: | Commissioning, testing |
| Description: | The substation has 500 kWh of batteries and 1 MW - 10s of supercapacitors. The supercapacitors were not involved in the cause of failure, which happened during acceptance testing. The investigation found that rack #2 suddenly discharged into rack #3, and the current passed through only modules #1 to #7 of rack #3. The insulation resistance of rack #2 fell below the safety threshold and neared short circuit for rack #3. The investigation report provides a hypothesis of two faults resulting in failure: an electrical connection failed and came into contact with the metal frame, and an insulation fault between the busbar connecting a module to the BPU box, which may have caused an electric arc upstream of the fuse. The container was destroyed. |
| Root Cause: | |
| Failed Element: | |
| Source: | Investigation Report (English Translation) |
| Additional Resources: | Investigation Report (Original source, French) |
- Note: Missing values in this table reflect unknowns.
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