Distributed Energy Storage Modules (DES)

A Distributed Energy Storage (DES) unit is a packaged solution for storing energy for use at a later time. The energy is usually stored in batteries for specific energy demands or to effectively optimize cost. DES can store electrical energy and supply it to designated loads as a primary or supplementary source. Moreover, it provides a stable and continuous power supply, regardless of the supply source status.

Voltage and Frequency regulation can be improved by using DES modules. DES contains inverters that convert the energy into DC to store in the batteries and then transform the DC energy into AC energy, single or three phases at 50 or 60 Hertz. The energy converted into AC power can be connected to the electrical network at medium (1 to 40.5 kV) or low voltage (< 1000 Volts).

ABB provides the necessary electrical, protective, and monitoring equipment, along with the battery system to utilize the batteries safely with pre-designed, tested, required safety systems to meet ANSI, IEC and other international standards. This will guarantee a high level of energy continuity, superior power quality in a safe and cost effective module.

DES is available in several capacities with individual modules up to 2 MW and an output voltage range of 120 volts to 40.5 KV at 50 or 60 Hertz, single or three phase system.

The enclosure of the DES modules is engineered to maintain the temperature of the equipment inside within the design limits as well as provide protection. Different temperature classes and types of protection are available according to the application and size. The enclosure protection of the DES modules is according to IP or NEMA testing among others.

Summary
Soaring energy prices and concerns about climate change from man-made emissions of carbon dioxide have propelled energy efficiency to the top of the agenda in the boardroom, in public debate, and in public policy. Under this scenario, Distributed Energy Storage is a state-of-the-art technology, which contributes to raise the efficiency at every stage of the energy chain by:

• Improving the uniformity and efficiency with which electrical energy is being used
• Raising power quality with better voltage and frequency regulation, as well as minimum interruptions
• Increasing the capacity factor of the renewable energy sources in order to make the clean energy available for longer periods
• Providing a reliable source of energy to communities

DES modules integrate batteries, transformers, medium and low voltage switchgear together with automation equipment, such as inverters, in a completely compartmented and segregated enclosure. The modules are carefully engineered and tested, including the enclosure, assuring high and safe performance.

DES is the energy storage alternative for an efficient and smart electrical network operation through:

• Individual modules up to 2 MW
• Output voltage range of 120 volts to 40.5 KV at 50 or 60 Hertz, single or three phase system
• Individually type tested equipment to satisfy different standards and system requirements
• Enclosure designs with different temperature classes and degree of protection are available according to the application and size
• Different types of batteries according to the application and size
• ABB’s vast and global experience (shipping over 100,000 units) in the design of modular systems, integrating electrical equipment in enclosures for solar and wind applications, as well as utility and industrial
• Global service coverage with a high level of engineering capabilities