The fire of energy storage in 2024 is undoubtedly evident to all. Against the backdrop of further constraints on the expansion of traditional solar power generation, various parties are continuing to seek new development directions. At this point, energy storage has almost inevitably been pushed to the center stage.
Energy storage is a generic term encompassing many technological directions and branches. As part of the transition from photovoltaics to energy storage, many are most concerned about how to seamlessly integrate existing photovoltaic systems or applications with energy storage systems.
So, is energy storage necessarily inseparable from photovoltaic systems? We can briefly analyze several application modes of photovoltaic energy storage integration projects that have been implemented.
1. Photovoltaic System Self-supply with Storage
This mode is commonly seen in high-quality rooftops with large electricity demand and stable production from small and medium-sized enterprises. Previously, photovoltaic systems mostly adopted the "self-use and surplus electricity grid connection" mode. The original purpose was to offset or reduce the consumption of grid electricity through solar power generation. By constructing rooftop distributed photovoltaic power stations, considerable profits have been obtained.
2. Exchange-coupled Energy Storage System
The high-quality 380V/50Hz electricity produced by the photovoltaic system serves as the energy source for the energy storage PCS, participating in the charge and discharge of the battery in the energy storage system. This system not only maximizes the self-use and self-storage of photovoltaic energy but also further reduces the electricity expenses of enterprises.
3. Direct Current Coupled Energy Storage System
The photovoltaic components are directly connected to the energy storage machine PCS, also known as the integrated on-grid/off-grid unit. Through this system, both the photovoltaic components and the battery pack can be simultaneously connected without additional control equipment. This system has a backup power function, ensuring normal operation of the load even in the event of photovoltaic failure or mains power outage.
4. Mandatory Matching of Photovoltaic Systems with Storage
With the continuous increase in the capacity of photovoltaic access in various regions, the power distribution system has become increasingly saturated. Some areas have implemented mandatory matching policies, requiring photovoltaic projects to be equipped with a certain proportion of energy storage systems. For example, the electricity departments of several prefecture-level cities in Hebei province require newly-built photovoltaic systems to be equipped with 10% to 15% of the energy storage system capacity, with a charging duration of no less than 2 hours, to alleviate the pressure on the power distribution network.
5. Peak-valley Arbitrage System
In economically developed regions with large electricity consumption, there is a significant difference between peak and off-peak electricity prices. For example, in a certain area of Guangdong, the electricity prices during peak periods are significantly higher than those during off-peak periods. By constructing energy storage systems, charging during off-peak periods and discharging during peak periods can save costs.
The Close Connection between Photovoltaics and Energy Storage
Although there is no inherent connection between photovoltaics and energy storage, their relationship is closely intertwined in practical applications. For example, in northern regions where the construction of photovoltaics is still substantial, there is a close connection between photovoltaics and energy storage. Energy storage systems, through the conversion of charging and discharging, not only reduce the pressure on the grid but also provide electricity to loads in specific modes, reducing users' electricity expenses.
In summary, the integration of photovoltaics and energy storage technologies brings new opportunities for the energy sector. GREEN POWER, as a leading brand in the field of energy storage, is committed to innovative technologies, providing users with high-performance, reliable energy storage solutions, and jointly promoting the sustainable development of the energy sector.
If you're interested in learning more about our solar energy storage offerings, we encourage you to explore our product line. We offer a range of panels and battery that are designed for various applications and budgets, so you're sure to find the right solution for your needs.
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Post time: Apr-16-2024
