Distributed energy storage can be applied in three main scenarios: user side, distributed power source side, and distribution side; it can provide services to power grid companies, industrial and commercial enterprises with large electricity demand and high energy consumption, as well as regions and public buildings with high energy storage requirements.
I. User side
On the user side, it is mainly used for peak shaving and valley filling electricity price arbitrage, photovoltaic + energy storage, backup power for communication base stations, backup power for data centers, and the construction of microgrids.
1. Backup power: Distributed energy storage systems, due to their rapid response capabilities, can serve as uninterruptible power supplies (UPS) to ensure power supply to critical loads during power outages.
2. Participate in demand-side response: Based on peak-valley price differences, help users to stagger their electricity consumption without changing their electricity usage habits, thereby reducing electricity purchase costs.
II. Distributed Power Supply Side
The power generation side is mainly used to smooth out renewable energy generation and output.
Distributed energy sources such as wind power and photovoltaics have intermittent, random, and fluctuating output characteristics. The combination of distributed energy storage systems and distributed power sources can significantly improve the operating characteristics of these distributed power sources, suppress their power fluctuations, enhance power dispatchability, and realize their end-node voltage control.
III. Power Distribution Side
The grid side is mainly used for peak and frequency regulation, peak shaving and valley filling, and increasing grid stability.
1. Achieve peak shaving and valley filling of load: Utilize distributed energy storage devices to discharge during peak load periods and charge during off-peak load periods.
2. Grid frequency regulation: Distributed energy storage systems have the characteristics of fast response speed and high output power control accuracy.
Distributed energy storage systems are increasingly widely used on the power user side, with diverse application scenarios, representing a potentially excellent resource for the power grid. With the rapid development of smart grids, renewable energy generation, distributed generation and microgrids, and electric vehicles, a large number of distributed power sources are being connected to the distribution network.
