Storage System: Power and Control

From the integration of Battery Energy Storage System with the intelligence of the Energy Management System comes a key element to conserve electricity, use it when we need it, reduce our consumption

Published on 26 November 2019

Li-ion technology based energy storage systems

“Power is nothing without control” was the headline of an iconic advertising campaign of the 90s, sporting the Brazilian football great Ronaldo - aka “O’ Fenomeno” - and the “son of the wind” himself, the former Olympic sprint champion Carl Lewis. This expression pretty much sums up what Storage systems are all about: power and control. Today, a combination made possible by the integration of Li-ion batteries with energy management software - the so-called Energy Management System (EMS) - is transforming energy into a smart service.

Battery Energy Storage Systems (BESSs) integrate heavy-duty batteries with the efficiency of software systems that rely on Big Data, AI and Machine learning. Power and control are now enhanced by flexibility, resilience and streamlining, basically, all those features that address the energy needs of dwellings, as well as those of the power grid, industries, and renewable power stations.

Much more than simple batteries

Li-ion battery technology is currently the most advanced and widely available solution on the market to accomplish the stockpiling of energy.

The basic element of these Battery Energy Storage Systems is made up of the single rechargeable batteries that since the 90s have powered laptops and cellular phones.

BESS systems based on Li-Ion technology, are integrating storage batteries in a wider scope and more advanced system made up of:

  • Battery cells, manufactured by battery suppliers and assembled in battery modules (the smallest unit of an integrated battery system).
  • Battery racks, made up of connected modules to obtain the desired DC Voltage
  • Containerized battery system: made up multiple racks connected in parallel to obtain the desired DC current and nominal power.
  • Power conversion system (PCS): used to convert a battery’s DC output in an Alternating Current (AC) output at mains voltage.
  • Control system: managing a battery system requires the implementation of multiple control layers. The Battery Management System (BMS) is the lowest level of control as it’s usually integrated with factory-made battery modules. BMS guarantees that modules and racks all remain within their operational parameters (e.g. temperature, voltage). At a higher  level of control, we find the Site Scada, which allows managing the charging and discharging of the system in response to signals. Site Scada may suffice for relatively simple applications (e.g. frequency regulation).

The Energy Management System: how it works

Do you know the technologies and equipment that make up energy storage? What makes our Energy Management System (EMS) work in order to manage smartly the energy needs of homes, businesses and entire cities? Learn more and see why Enel X is your ideal partner.

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