Industrial and commercial energy storage systems, why are you recommended to choose "customization"?
2025-03-18
Recently, the energy storage industry has been very popular, and industrial and commercial energy storage is the "focus of the focus". Everyone knows that energy storage is an important means to solve the intermittent and volatile nature of new energy sources such as photovoltaics and wind power, and to promote consumption.
Unlike other energy storage fields, industrial and commercial energy storage has complex application scenarios, and the needs of factory-type users, park-type users and office building-type users are different. To complete the transformation from "idealization" to "implementation", not only clearer and more powerful policy support is needed, but also the development of the industrial and commercial energy storage industry itself should be promoted through technology and product innovation.
1. Does the industrial and commercial photovoltaic storage system solution have to be DC coupled?
The photovoltaic storage system solution is a fusion solution of photovoltaic and energy storage, which mainly includes AC side coupling solution and DC side coupling solution. Generally speaking, small and medium-sized energy storage systems suitable for industrial and commercial use tend to be DC side coupling solutions. The energy storage system can be directly connected to the DC side, with fewer power conversion links between the two systems, low energy loss, and less equipment investment. However, the DC coupling solution also has shortcomings such as inconvenient monitoring.
As one of the top 20 industrial and commercial energy storage companies and a developer of industrial and commercial modular photovoltaic storage systems, HT INFINITEPOWER is the first in the industry to define the "three major power modules", and customers can choose according to their needs to meet the diverse needs of industry and commerce.
For example, the customized module PCS has a charge and discharge conversion time of no more than 40ms and a response time of less than 30ms. It has multiple operating modes such as PQ, VF, VSG, MPPT and other DC voltage sources. It has excellent high and low voltage ride-through characteristics in the face of on-grid and off-grid switching, multiple machines in parallel, etc. It has the ability to operate stably under SCR=1.05, making the grid more adaptable and easier to expand.
● PQ (Power Quality) mode:
In this mode, the device outputs electrical energy strictly according to the set active power (P) and reactive power (Q) values. This means that it precisely controls its output according to pre-configured or external instructions, regardless of the frequency or voltage state of the current grid. Devices in PQ mode usually behave as a constant power source.
● VF (Voltage and Frequency) mode:
VF mode is designed to keep the frequency and amplitude of the output voltage stable. This mode is often used in small isolated power systems to ensure stable voltage and frequency during independent operation. VF mode is suitable for occasions with high voltage accuracy requirements and can maintain stable voltage and frequency output without large grid support.
● VSG (Virtual Synchronous Generator) mode:
VSG mode is an advanced control strategy designed to simulate the characteristics of traditional synchronous generators to enhance the stability and reliability of power systems. VSG simulates the inertia and damping characteristics of traditional synchronous generators through software algorithms, provides active power and reactive power support, helps suppress oscillations in power systems, and improves the quality and stability of power grids. VSG mode is suitable for microgrids and smart distribution networks, especially when a high proportion of renewable energy is connected, and can provide services such as frequency regulation and voltage support.
● MPPT (Maximum Power Point Tracking) mode:
MPPT acts on the DC side of the photovoltaic inverter to enable the photovoltaic components to achieve optimal output. It does not conflict with control modes such as PQ, VF, and VSG, because they act on different parts of the inverter: MPPT acts on the DC side, while PQ, VF, and VSG act on the AC side. The purpose of MPPT is to maximize the power generation efficiency of the photovoltaic system, while other control modes focus on the stability and power quality of the power grid.
Through the independent matching of power modules, HT INFINITEPOWER has also created HT series products that can be flexibly matched with expansion, intelligent control, and applicable to multiple scenarios. The HT series products can combine systems and customized solutions with different functions, different scales, and different performances to calmly cope with the complex and diverse needs of industrial and commercial customers, thereby achieving maximum energy efficiency management and improving the return on investment.
Whether it is regional power distribution, energy mutual assistance and complementarity, or industrial and commercial energy storage, you can choose a suitable coupling solution according to project requirements, so that AC coupling and DC coupling are no longer a problem that plagues the integration of photovoltaic storage.
2. It is better to look at integration strength than fusion technology
Infinite Power Electric not only has "hard power" in fusion technology, but also has "hard skills" in the integration capability of photovoltaic storage system. Due to the immaturity of the industrial model, there are still only a handful of companies on the market that have complete photovoltaic storage system integration capabilities.
Infinite Power Electric focuses on industrial and commercial modular photovoltaic storage systems. The energy storage system it develops and produces can ensure the safe and stable operation of photovoltaic, energy storage and power grid. By breaking through the barriers between hardware, software and system levels, it can achieve "double standards" of technology and integration capabilities.
Moreover, with 15 years of accumulation in the industry, the Infinite Power Electric R&D team has obtained its own technical patents in the integration system, and can customize the design of the system integrated cabinet structure, air duct and BMS, EMS communication protocol according to the customer's own PACK.
3. What you think is a low price is ultimately an abbreviation of "low value"
The data on electricity consumption in the whole society in 2022 shows that in terms of electricity consumption structure, the secondary industry accounts for more than 60% of industrial electricity consumption. Industrial and commercial users are the main energy users in society. Enterprises can use energy storage systems to charge during valley electricity price periods and discharge for their own use during peak electricity price periods, thereby reducing the energy costs of enterprises.
Low-price energy use does not mean "low-price energy storage use". According to incomplete statistics from the International Energy Network Energy Storage Headlines, the bidding price range for energy storage system procurement is between 0.95 yuan/Wh and 1.24 yuan/Wh. Low-price bidding has made many companies confused by low costs, thinking that low prices can save costs to the maximum extent.
There is a saying that all gifts have been secretly marked with prices. In the selection of energy storage systems, low prices mean "low value" - lowering the standards for system performance.
"The most critical part of energy storage system integration is the safety management of the DC side, which requires a very complete system protection design." Mr. Xin, deputy general manager of Infinite Power Electric, believes that the six core links of battery cells, modules, battery clusters, battery management system management, PCS, and EMS must be linked together, and advanced intelligent management systems are needed to monitor in real time, warn of their operating status faults, and realize step-by-step protection and rapid linkage troubleshooting.
Otherwise, small faults can easily turn into big problems.
Most of the more than 30 fire accidents that occurred in South Korea in recent years were caused by defects in electrical system design and inadequate protection systems.
In addition to the battery life problem, there is also the energy storage temperature control system. Strict thermal simulation and experimental verification, air duct design of energy storage containers, air conditioning power configuration, etc., these links are not strictly controlled and designed, which can easily lead to uneven battery temperature inside the system cabinet and aggravate the instability of the battery cells.
Summary:
With the rapid development of energy storage technology, modular energy storage systems have been widely used in power grid regulation, renewable energy grid connection, electric vehicle charging and other fields. Especially in the field of renewable energy, due to intermittency and instability, energy storage systems are required to store and regulate energy, and modular energy storage systems can better meet this demand. In the future, with the further development of energy storage technology and the further reduction of costs, the application of modular energy storage systems will be more extensive.
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