Industrial and commercial energy storage vs energy storage power station

Among them, industrial and commercial energy storage and energy storage power stations are two types of energy storage systems commonly used at present. Commercial energy storage vs energy storage power station help clarify the distinction between these two types of energy storage.

Understand energy storage power station and industrial and commercial energy storage

Energy storage power station refers to an equipment system that stores, converts and releases recyclable electrical energy through electrochemical cells or electromagnetic energy storage media.

The energy storage power station is mainly composed of four parts, namely energy storage battery, battery management system, inverter and energy management system.

Industrial and commercial energy storage is mostly built in an integrated manner, using integrated cabinets. Industrial and commercial energy storage systems usually adopt the same configuration as energy storage power stations, but with relatively small capacity and relatively simple functions.

Compare the differences between the two energy storage

Although energy storage power power station and industrial and commercial energy storage systems both use batteries to store energy, they are designed for different applications and have different structures.

Battery

Industrial and commercial energy storage uses energy-based batteries. Industrial and commercial energy storage has relatively low requirements on response time. Considering factors such as cost, cycle life, and response time, energy-based batteries are used.

The energy storage power station uses power type batteries for frequency regulation. Similar to industrial and commercial energy storage, energy storage power stations mostly use energy-type batteries.

However, because of the need to provide power auxiliary services, the energy storage battery system of frequency modulation power station has higher requirements on cycle life and response time.

Batteries used for frequency modulation and emergency backup need to be of power type. Leading lithium battery companies have launched a power station battery system with a cycle count of about 8,000 times, which is higher than that of ordinary energy-type batteries.

BMS

The industrial and commercial energy storage battery system can provide overcharge, overdischarge, overcurrent, overtemperature, undertemperature, short circuit and current limiting protection functions for the battery pack.

The industrial and commercial energy storage battery system can also provide the voltage equalization function during the charging process. It can perform parameter configuration and data monitoring through the background software, communicate with various types of PCS and jointly carry out intelligent management of the energy storage system.

The structure level of the energy storage power station’s unified management of batteries is where the most complexity exists.

The energy storage power station calculates and analyzes numerous factors and the battery’s operational condition in accordance with each layer’s and level’s unique features in order to accomplish effective management, including balancing, alert, and protection.

This will provide equal output from each group of batteries, guarantee the best possible system condition, and enable the longest possible runtime.

At the same time, it can maximize the service life of the battery and ensure the stability, safety and reliability of the energy storage system.

PCS

The energy storage converter (PCS) is a key device between the energy storage device and the grid. Relatively speaking, the function of the industrial and commercial energy storage PCS is relatively single and more adaptable.

Industrial and commercial energy storage inverters are based on two-way conversion.

They are small in size and can be flexibly expanded according to their own needs, making it easier to integrate with the battery system. Series and parallel requirements of various batteries such as LEP.

By clicking our batteries in series vs parallel, you can learn more about the differences between series and parallel connections of batteries.

The PCS of the energy storage power station has the function of supporting the grid. The DC side voltage of the converter of the energy storage power station is wide, 1500V can run at full load.

In addition to the basic functions of the converter, it also has the functions of grid support, such as primary frequency regulation, fast dispatching of source, grid and load, etc., the adaptability of the grid is strong, and it can achieve fast power response (<30ms).

EMS

The functions of industrial and commercial energy storage EMS systems are relatively basic. Most industrial and commercial energy storage systems EMS do not need to accept grid dispatching, but only need to do a good job in local energy management.

They need to support energy storage system battery balance management, ensure operational safety, support millisecond-level fast response, and realize integrated management and centralized control of energy storage subsystem equipment. .

The EMS system of energy storage power station has higher requirements. Energy storage power stations need to be dispatched by the grid, and have high requirements for the EMS system.

In addition to basic energy management functions, it is also necessary to provide grid dispatching interfaces and energy management functions for the microgrid system. Multiple communication protocols need to be supported.

Equipped with a standard power dispatching interface, it can manage and monitor energy in applications such as energy transfer, micro-grid, and power frequency modulation, and supports the monitoring of multi-energy complementary systems such as source, grid, load, and storage.

Summary

With the development of energy storage technology and the expansion of peak-to-valley price differences, industrial and commercial energy storage is being applied on a large scale in industrial parks. Energy storage power station can also be used to provide a range of services to the grid, such as frequency regulation, voltage support, and more.

In short, both industrial and commercial energy storage and energy storage power stations are an important part of our energy storage infrastructure.

However, understanding the differences between these two energy storage systems and the components used in them such as batteries, BMS, PCS, and EMS is crucial to making an informed decision.