The Ultimate Guide to Safe and Effective Long-Term Operation of Energy Storage System

September 15,2021

The energy storage system is a device capable of storing large amounts of electrical energy in electrostatic charges. It uses a power conversion unit to carry out the throughput with or without power in time, maintaining the balance of the instantaneous power within the power system and avoiding the large power imbalance between power generation. The energy storage system can also stabilize the power system voltage, frequency, and reliability of the power supply.

Since humans have evolved through time, safe management of energy has been an important human activity. Whether it is household or industrial use, various forms of energy are stored and used. In any energy storage system, people face potential dangers and need to adopt energy storage and management technologies.

Climate change is the potential driven force of the way people produce and use electricity. The increasing frequency of power outages caused by natural disasters and the transition to intermittent renewable energy have driven the need of better energy storage system to reduce electricity and energy flexibility. Therefore, the deployment of energy storage in enterprises and households around the world has proliferated.

In recent years, the application of distributed grid-connected power generation systems based on green and renewable energy such as wind energy and solar energy has rapidly increased. There is no doubt that maintaining the safe operation of battery energy storage systems is very important. To ensure the safe and effective long-term operation of the energy storage system, Cubenergy launched the distributed energy storage system - PowerComboTM. After the application, the functionality and advantages have been verified and can minimize actual and perceivable risks.

The main application scenarios of the distributed energy storage system -PowerComboTM are the user side. Compared with a centralized energy storage system, PowerComboTM reduces the line loss and investment pressure of centralized energy storage stations. Furthermore, reasonably planned distributed energy storage can reduce the capacity of the distribution network by PDS (Peak Demand Shaving). Still, it can also compensate for the negative impact of distributed randomness on the power grid's security and economical operation.

There are also a series of ADR (auto demand response) launched to reduce the power grid's stress. Let’s take the PowerComboTM as a case. During the power system operation, once the power generation side detects an impending peak situation, the system in the facility will be notified immediately. The demand response automated server (DRAS) - WeWatt™ cloud demand-side response server and the grid side will receive power system signals and then send the demand-side response situation to the power generation side and the distribution network side. Meanwhile, the CuBox, an open type of automation demand-side response controller installed in the user terminal, will give feedback to the demand-side response situation.

By dynamically adjusting the charge and discharge rate of PowerComboTM, it can directly respond to the ADR situation, provide demand-side response services to the grid, and obtain a power system auxiliary service revenue. In this case, the distributed energy storage system can be applied to all aspects of the power system and has broad application prospects and huge application potential. The distributed energy storage system will play an increasingly important role in the power grid in the future.