The Energy storage system can be used for frequency modulation and peak regulation with both a grid-connected operation mode and an off-grid operation mode which can realize peak-cutting valley filling, reactive control, and off-grid emergency power supply.

     ♦ Networked systems play role in reducing power fluctuations in new energy generation and increasing the proportion of new energy access.
     ♦ Dynamically compensate reactive power and harmonics of the distribution network to improve power quality.
     ♦ Reduce network loss and improve the reliability of load power consumption.
     ♦ Independent system power is absorbed locally, saving grind investment and improving new energy utilization rate.
     ♦ Energy storage and power-type charge and discharge technology (batteries, supercapacitors, etc.)
     ♦ The system changes current in both directions, accepts the higher-level instructions, and switches off in an off-grid manner.
     ♦ The monitoring system under the full digital control can view the operating status information of energy-storage converter, and has diagnostic and reset functions, which can realize unattended operation and fully automatic operation;
     ♦ Maintain power balance, cut peaks and fill valleys, and archive frequency modulation and peak shaving in parallel with multiple machines.