Industrial and commercial energy storage is a major type of user-side energy storage system, which reduces the electricity bills of industrial and commercial owners by maximizing the self-consumption rate of photovoltaics. It mainly implements functions such as energy time shifting, peak-valley price difference arbitrage, capacity electricity fee reduction and demand response. This article will provide a detailed analysis of industrial and commercial energy storage, including its classification, main components and their functions, as well as key conditions that need to be understood.
Industrial and commercial energy storage systems are mainly divided into two categories: standard boxes and non-standard boxes. TEUs are generally designed based on 20-foot or 40-foot containers and have an energy storage capacity of 215KWh. Non-standard containers are customized according to specific working conditions, and the capacity is determined according to actual needs.
The main components of industrial and commercial energy storage systems include outer boxes, batteries, battery management systems (BMS), PCS (converters), EMS (energy management systems), junction cabinets, fire protection systems, cooling systems, electrical control systems, and various connections. devices and auxiliary equipment, etc.
The outer box plays a role in aesthetics and protecting internal components, ensuring the safety and reliability of the system. The battery is the part that stores electrical energy and consists of cells, battery packs and battery clusters. BMS is a battery management system that can protect the voltage, current and temperature of the battery system, while performing balanced charging to ensure that each battery is in optimal condition.
PCS is a converter that converts the DC power stored in the energy storage device into AC power, allowing the energy storage system to interact with the mains or load. EMS is an energy management system, responsible for functions such as data collection, network monitoring, energy scheduling, and network data analysis. The combining cabinet is used to collect the current of each battery cluster and perform centralized regulation.
Industrial and commercial energy storage systems also need to be equipped with fire protection systems, using heptafluoropropane fire extinguishing agent, which has the functions of temperature insulation, flame retardant and explosion-proof to ensure the safety of the system. The cooling system uses air cooling or liquid cooling to cool the battery pack and internal heating components to ensure the normal operating temperature of the system.
In addition, the energy storage system also requires an electronic control system for operation control, including buttons, APP online monitoring and communication functions. Various connectors are responsible for connecting wire harnesses, plug-ins, copper bars and other parts. Auxiliary equipment such as transformers, DCDC converters and auxiliary lighting play a supporting role.
There are also some key considerations to consider when understanding commercial and industrial energy storage systems. The first is the application usage scenario. It needs to be clear whether it is used in a microgrid or needs to be connected to the grid. The second is the power generation method. It is necessary to understand the photovoltaic input power, the total power of the PCS, the total battery power and the required voltage, as well as the voltage conditions required for grid connection. Finally, the heat dissipation method is also a factor that needs to be considered. Currently, the common heat dissipation methods are air cooling and liquid cooling.
As an effective energy management method, industrial and commercial energy storage systems can maximize the use of photovoltaic power generation and reduce electricity bills. By understanding the classification, main components and key conditions of industrial and commercial energy storage, we can better understand and apply this technology to provide more efficient and economical power solutions for industrial and commercial owners
All in all, commercial and industrial energy storage plays an important role in energy management and electricity bill reduction. By rationally selecting the classification of energy storage systems and understanding the functions and key conditions of each main component, industrial and commercial owners can maximize the self-use rate of photovoltaic, reduce electricity expenses, and achieve energy time shift, peak-valley price difference arbitrage, capacity electricity fee reduction and Demand response and other functions. The continuous development and innovation of industrial and commercial energy storage technology will bring more efficient and sustainable energy utilization methods to industrial and commercial owners, assisting the development and green transformation of enterprises.
