What is an integrated photovoltaic-storage-charging system?

An integrated photovoltaic-storage-charging system refers to a small-scale self-powered system, also known as a microgrid, composed of distributed photovoltaic power generation, electrical power consumption, power distribution facilities, and monitoring and protection devices. Its working principle is to utilize photovoltaic power generation, storing surplus electricity in energy storage devices to jointly handle power supply and charging tasks.

Electric vehicle charging stations have long faced challenges related to insufficient land resources or grid connection. The emergence of the integrated photovoltaic-storage-charging system not only solves the problem of limited land and power capacity in the distribution network but also achieves a basic balance between local energy production and energy load through energy storage and optimized allocation.

The integrated photovoltaic-storage-charging system consists of an energy storage system and charging facilities. Addressing the pain point of insufficient power capacity in regional charging stations, it primarily solves the difficulty of expanding and increasing the capacity of regional charging stations. This system can also participate in grid peak shaving and frequency regulation, peak shaving and valley filling, and even serve as a supporting facility for the energy internet, supporting the integrated development of smart grids, smart charging, and smart information networks.

Its features are as follows:

1. It is a smart microgrid system.

The photovoltaic-storage-charging system is an important component of a microgrid, tightly integrating photovoltaic power generation, energy storage technology, and charging facilities to form a smart microgrid system. Within the microgrid, the photovoltaic-storage-charging system achieves efficient energy utilization and optimized allocation through an intelligent management system (EMS).

2. It reduces the pressure of power distribution capacity expansion and facilitates peak shaving and valley filling.

The photovoltaic-storage-charging system stores electrical energy during off-peak hours and releases it during peak hours, thus achieving peak shaving and valley filling. This not only reduces grid load but also improves grid operating efficiency and stability.

Furthermore, the photovoltaic-storage-charging system can expand distribution capacity by adding energy storage devices, thereby coping with ever-increasing electricity demand and reducing investment in grid construction.

3. It is simple to construct, allows for rapid dispatch, and has low cost.

The construction of the photovoltaic-storage-charging system is relatively simple, employing a modular design that facilitates daily maintenance and upgrades. Its intelligent management system (EMS) can analyze photovoltaic power generation, energy storage status, and charging demand in real time, optimizing energy allocation and achieving rapid dispatch.

4. Short-term off-grid operation capability, improving power supply reliability.

The photovoltaic-storage-charging system has the capability for short-term off-grid operation. When the grid fails or experiences a power outage, the energy storage system can serve as a backup power source, ensuring users' basic power needs.

5. Particularly suitable for scenarios with short-term pulse loads.

The photovoltaic-storage-charging system is particularly suitable for scenarios with short-term pulse loads, such as industrial parks and logistics hubs—high-energy-consuming scenarios. In these scenarios, load demand fluctuates greatly, and high load demand may occur in short periods.

The photovoltaic-storage-charging system can quickly respond through energy storage devices, providing instantaneous high-power output to meet the needs of short-term pulse loads, while optimizing energy use and reducing operating costs.

The following images show a recently installed photovoltaic-storage-charging integrated system at the Greensun lithium battery factory. This system uses deye 80kW hybrid inverter, 768V 314AH Greensun high voltage lithium batteries, and a Greensun 30kW charging station.

If you would like to learn more, please feel free to contact us!