Standard energy storage equipment

What is an energy storage system?

This standard is a system standard, where an energy storage system consists of the an energy storage mechanism, power conversion equipment and balance of plant equipment as shown in Figure 6.1. Individual parts (e.g. power conversion system, battery system, etc.) of an energy storage system are not considered an energy storage system on their own.

What are energy storage requirements?

These requirements cover energy storage systems that are intended to receive and store energy in some form so that the energy storage system can provide electrical energy to loads or to the local/area electric power system (EPS) when needed.

What is the energy storage standard?

The Standard covers a comprehensive review of energy storage systems, covering charging and discharging, protection, control, communication between devices, fluids movement and other aspects.

Which energy storage systems are covered by UL 9540?

The standard covers energy storage systems such as: UL 9540 covers systems for the following type of installations: This standard does not cover systems that use lead acid or nickel-cadmium (Ni-cad) batteries, which are covered by UL 1778.

What are the different types of energy storage?

The types of energy storage covered under this standard include electrochemical, chemical, mechanical and thermal. The energy storage system shall be constructed either as one unitary complete piece of equipment or as matched assemblies, that when connected, form the system.

What is an energy storage system (ESS)?

The ESS shall be constructed either as one unitary complete piece of equipment or as matched assemblies, that when connected, in accordance with the manufacturer’s installation instructions, form the ESS. An ESS consists of at least an energy storage function and energy storage protective function.