Megawatt vanadium battery system

Vanadium battery system

It consists of single or several vanadium batteries, vanadium battery management system (BMS), power conversion system (PCS) and central control system. Vanadium electricity

The battery management system is operated and controlled by a programmable logic controller (PLC), and the internal management of the vanadium battery is carried out. Power Conversion System (PCS),

Including bidirectional inverter, transformer, grid-connected switchgear, realize bidirectional power transfer between vanadium battery and power grid

Connected critical equipment. Central control system (CCS), which integrates human-computer interface, algorithm control part, communication control part and drive control part.

The control part is responsible for monitoring the operation of the entire system.

Features:

◆Through the standard power bus of PCS, it can be directly connected with the power grid, wind power generation, photovoltaic power generation, electrical equipment, etc.

◆With automatic control function, it can automatically charge or discharge according to the amount of battery power and the user's power consumption.

Dual mode automatic operation. In the normal mode, the energy storage system is connected to the grid. When the AC side grid fails, the energy storage system is automatically disconnected and connected to the grid.

It switches to the off-grid operation mode, and automatically connects to the grid after the grid fault is eliminated.

◆Power grid voltage monitoring, providing dynamic active and reactive power support, can solve many power grid power quality problems, such as voltage fluctuation, sudden

Ups and downs, etc. (when connected to the grid)

◆Equipped with standardized communication ports to realize remote signaling, telemetry, remote control, and remote adjustment, and transmit data to the remote control terminal in real time, which can be checked remotely.

Check the battery power and working status, and can realize remote control of battery start and stop, charge and discharge status conversion, power adjustment and other functions.

◆The system is intelligently controlled, and daily maintenance is carried out automatically; overvoltage, undervoltage, overcurrent, high temperature, low temperature, and leakage occur during the operation of the battery system.

When the communication is abnormal and other states, it will alarm and transmit the data to the remote control terminal.

Megawatt vanadium battery system

application:

◆Suitable for medium and large-scale wind power, photovoltaic, wind-solar hybrid power generation energy storage system, used to form regional power grids to supply urban communities, towns, etc.

Give clean high-quality electricity;

◆It is suitable for smooth output, frequency modulation and amplitude modulation of medium and large wind power, photovoltaic and wind-solar hybrid power generation.

Technical indicators:

GEFC-4MW8h-VFCS composition:

Every 15 vanadium batteries form a 750V200A300kW4h vanadium battery pack, each vanadium battery pack is connected with a single-phase bidirectional inverter DC/AC

It forms a single-phase 385V390A150kW8h inverter unit, with a total of 27 inverter units. The single-phase inverter DC/AC output is controlled by the modulation ratio.

output voltage.

item

Project parameter

type

No. GEFC-4MW6h-VFBS

Rated power 4MW

Backup time 6h

Total capacity 32MWh

System size 95m x41m x3m

Design life of 20 years

System efficiency 65% ~ 70%

Operating ambient temperature 5~35°C; indoor

Run mode unattended