Test facilities for energy storage systems
Matching the production of electricity to the fluctuating demand is complicated as more renewable sources come on line. Small-scale or large-scale electricity storage creates flexibility, thus allowing market mechanisms to function effectively. Battery powered (PH)EVs, e-bikes, utility and ‘behind-the-meter’ energy storage will be common place.
Project
Many of the energy storage applications do not have standardized tests. We help clients determine the types of tests that should be performed and the right approach in designing the actual tests for the devices. KEMA has a comprehensive range of test facilities in Europe and the United States, which enables traditional and new equipment to be connected permanently or flexibly to the electricity grid. Our laboratories are equipped to perform tests at any voltage level, including tests for PV storage systems, inverters and charge controllers. On top of that, we use simulating software to test ESSs on their specific applications.
Benefits
The successful introduction of any given system needs to ensure electrical and chemical safety of the technology and product. Storage is utilizing new and potentially hazardous materials and technologies. Impact testing, shock, and overcharging are often applied at the cell- or stack-size level. For the different energy storage systems and battery types, a number of standards exist for safety. Depending on the size, chemistry and application, one of the IEC or UL standards apply. KEMA, both in Netherlands and the United States, has the capability to conduct medium- and high-voltage AC and DC (3 kW – 50 kW) checks and to determine a system’s short-circuit resistance.
Performance tests typically examine how far a storage device can be pushed. This ultimately determines which technology option and application to choose. KEMA helps analyze how well a storage device of thousands of individual cells is configured, engineered and managed. Tests generally can be done at the manufacturer level, focusing on rated capacity, cycle testing versus operating conditions, and efficiency.
To provide insights into the performance of a complete system, KEMA can perform a large variety of tests on any DC current energy source. We offer performance testing and simulation of user profiles, delivering up to 40 kW per testing circuit with current ranging from 0.05 to 400 Ampere, and voltage levels from 0 to 100 Volt DC.
KEMA can also carry out field tests with its 2 MW AC field test facility. Our system accepting testing solutions help ensure energy storage systems meet performance specifications after field installation. The increasing application and penetration of grid-connected battery systems inevitably raises the demand for testing of the behavior of the equipment and its interaction with the power grid.
Project coordinator
> KEMA, the Netherlands, United States
Project details
> Duration: 2008-2010