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

It includes bidirectional inverter, transformer, grid-connected switch cabinet, realizes bidirectional power transmission between vanadium battery and power grid, and is the key equipment for connecting vanadium battery and power system. Central Control System (CCS), which integrates human-computer interface, algorithm control part, communication control part and drive control part, is responsible for monitoring the operation of the whole 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 from the grid, switched to the off-grid operation mode, and automatically connected 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 rise and fall, etc. (when connected to the grid)

◆Equipped with standardized communication ports, realizes remote signaling, telemetry, remote control, and remote adjustment, and transmits data to the remote control terminal in real time, which can remotely check the battery power and working status, and can realize remote control of battery start and stop, charge and discharge state conversion, power adjustment and other functions.

◆The system is intelligently controlled, and the daily maintenance is carried out automatically; in the event of overvoltage, undervoltage, overcurrent high temperature, low temperature, leakage, abnormal communication, etc., the battery system 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 clean and high-quality power to urban communities, towns, etc.;

◆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 and a single-phase bidirectional inverter DC/AC form a single-phase 385V390A150kW8h inverter unit, there are 27 inverter units in total, through the modulation ratio Control single-phase inverter DC/AC output voltage.

Project parameters

Model 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 operating mode unattended