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Energy Storage System

Power storage systems of large wind/PV power plants

The power storage system of a large ground wind PV power plantplant is a wind PV storage hybrid power generation system constituting the storage battery back, BMS and PCS in the large wind PV power plant system
  • System Brief
  • System Solution
  • System Characteristics

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The power storage system of a large ground wind /PV / power storage plant is a wind/PV/storage hybrid power generation system constituting the storage battery back, BMS and PCS in the large wind /PV power plant system. On condition of light or wind, it transmits electric power to the user side of the power grid by means of solar PV and wind generation and reduces the power obtained by loads from the power grid; if the power supply of the power grid is more than needed, the excessive power will be stored by the power storage system; if the power grid is abnormal or has a power failure, the wind/PV/power storage generation system will be disconnected with the power grid automatically, supply power to important loads on the user side and prevent from losses resulting from power failure.

Soaring Electric has the professional R&D and project plan design team and devotes itself to providing more intelligent wind/PV/power storage plant solutions for clients, by virtue of its advantage of “three-phase grid-tied inverter technology” and its experience in the design and operation of many large power storage projects. 

►Main System Structure
PV power generation system + wind power generation system + power storage system + monitoring system + load 

►Main Applications 
•  PV and wind, etc. generation, smoothening power output and peak shaving and valley filling;

•  Reduce the gap between the peak and valley of the power grid and the investment and improve the utilization rate of power generation equipment;

•  Power grid frequency modulation and reactive compensation and improving the operation stability of electrical system;

•  Expanding the power capacity during the specified peak load period;

•  Emergency power and standby power for important departments and important facilities; improving the reliability and quality of power supply;

•  Energy storage of electrical system and intelligent power grid of equipment.
 

►Advantages and functions of large ground wind/PV power plants with power storage systems:
After the large ground wind/PV power plant  is equipped with the energy storage system, it realizes the demand management effectively, makes the gap the peak and valley of the power grid smaller and make the load smoother. It can not only realize the effective utilization of electrical equipment, reduce the power supply cost and promote the application of recyclable energy but also is an approach to guarantee the operation stability of the system and compensate the load fluctuation.
In detail, the large wind/PV power plant equipped with the power storage system mainly have the following several advantages: 

•  Peak shaving and valley filling
•  Smoothening electric power and improving its quality

•  Power guarantee
If the power grid is abnormal or has a power failure, the wind/PV/power storage generation system will be disconnected with the power grid automatically, supply power to important loads on the user side and prevent from losses resulting from power failure.
 
►Successful application case
So far, this system has been successfully applied in major engineering projects, e.g. phase I and phase II of Zhangbei wind/PV/storage transmission demonstration project of State Grid. In the wind/PV/storage transmission demonstration project, Soaring Electric provides the sole 6MW energy storage bidirectional conversion system with grid-tied and independent grid running functions and also is the sole PCS supplier which realizes the launching function. 



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