Photo by Owen Roberts, NREL Considerations for energy storage system testing include the following. If cost-justified by a large purchase, consider qualification testing of battery systems. Include test conditions in specifications for battery O&M diagnostics and testing.
The requirements for periodic maintenance for energy storage products should be identified by the OEM (IEEE 2010). In settings where predictive analytics maintenance is economical, guidance should also be available from the manufacturer that identifies methodologies for assessing when a product may be approaching a failure mode.
Onsite data storage is required to prevent data loss during communication network outages. The amount of storage needed depends on the expected mean time to repair should an outage occur. An amount of storage that is equal to two times the highest-recorded communications outage is recommended.
There are many codes and standards relating to safety of stationary energy storage at the local, national, and international levels by UL, NFPA (NEC, 70E), ANSI, CSA, and IEC, among others.
When availability is applied at the component level, it may make more sense to use the time-based availability, reporting, for example, the fraction of days per year that the component was available rather than attempting to identify the energy availability associated with that specific component.
As part of the O&M manual and system documentation, the EPC contractor should have provided a spare-parts list with makes and model numbers, as well as recommended sources of such parts. Frequently used parts are called “consumables” and should always be stocked (e.g., fuses, filters, nuts, and bolts).
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