500kw hybrid system with 1058.4kwh BESS
Configuration
Working mode (PCS)
On Grid: The default factory setting of MAXBO is: Zero-Export, Load First mode.
- Zero-Export: Zero export function, the excess PV cannot flow to the grid
- Non zero-Export: Non-zero export function, the excess PV can flow to the grid
- Load First PV > load: PV is higher than load consumption, PV will priority supply load, then excess will charge battery.
- Load First PV < load: PV is lower than load consumption, then battery will discharge to offset the shortage part. If battery voltage approaches the under voltage limit, battery will stop discharging, and the load will supply by PV and grid.
On Grid: Working Mode – Battery First mode
- PV > Battery: PV is higher than maximum battery charging power, PV will priority charge battery, then excess will supply load.
- PV <Battery: PV is lower than battery charging power, PV and grid will charge battery at maximum charging power simultaneously. The load will supply by grid.
On Grid: Working Mode – Economy mode
- During Off-peak: The working mode is same as battery-first mode
- During Mid-peak:
1. Battery doesn’t discharge, grid won’t charge battery.
2. PV is higher than load consumption, PV will priority supply load, and then excess will charge battery.
3. PV is lower than load consumption; load will be supplied by PV and grid simultaneously. PV won’t charge battery. - During On-peak:1. Grid won’t charge battery.
2. PV is higher than load consumption, PV will priority supply load, and then excess will charge battery.
3. PV is lower than load consumption, PV and battery will supply load simultaneously.
If battery voltage approaches the under voltage limit, It will stop discharging. Load will be supplied by grid and PV. Grid doesn’t charge battery in this period.
On Grid: Working mode – Time schedule mode
- PCS Connected to Grid & Battery: When PCS is only connected to the grid and battery, set the on-peak period, mid-peak period and off-peak period, battery discharge in on-period, charge the battery in off-peak period, and do not charge and discharge in mid-peak period, the charging and discharging power can be set.
On Grid: Working mode – EMS mode
- In EMS mode: In EMS mode, PCS is fully controlled by EMS for charging and discharging, there is no working logic.
Off-Grid Mode
- Off-Grid: Load is supplied by PV and battery.
DG Mode: Generator connection (dry contact control)
- In off grid mode
In off-grid mode, when battery voltage is approaching under voltage limit, PCS will close a relay output to start generator. The generator power will be used to supply load and charge battery. When battery is fully charged, PCS will send signal to shut down the generator.
(When the battery is equipped with BMS, the generators on-off depends on SOC control)
System Overview
Product Details
Bi-directional Battery Inverter
- Full capacity range：100/250/500/630kW single unit
- Flexible configuration：Can be used alone or combined with other devices for different purpose
- Expandable：Multiple in parallel to form MW level system
- Touch screen：Convenient for parameter setting and viewing
Solar Charge Controller
- Modular design:
Multiple paralleling, easy maintenance - Up to 5 MPPTs:
Flexible PV array design, high yields
- Scalable:
Configure MW level system by paralleling multiple units
Seamless Transfer Switching Cabinet
- Seamless transfer: 10ms switching time, reliable supply
- Comprehensive sensors: Load, PV, grid, battery sensors inbuild
- Energy management: Communicate and control PCS or other system units
- Flexible customization: For different application
DC Cabinet
- Number of battery strings connected: 3-16
- Nominal battery current: 100A
- Max battery voltage: 1000V
- Display: Touch Screen LCD
- MBMS: Inbuilt
Battery Rack, Cabinet
- Safe and reliable: Self-designed 3 level BMS
- Easy installation and maintenance: Standard rack and module, front maintenance
- High power density: LFP battery，≥166Wh/kg
- Flexible customization: For different application and installation
Enerlog
- Data logger for overall system monitoring, collect operation data from different units via Modbus RS485 and communicate with MAXBO server via internet.
Enerview
- Local webserver for easy configuration
- Supports export control with meters
- Up to 32 devices connection
- Multi-function and high performance
The 500kW hybrid system with a 1058.4 kWh Battery Energy Storage System (BESS) provides a comprehensive solution for efficient energy management. This advanced system integrates a range of operational modes to optimize the use of energy storage.
In On-Grid mode, the system features multiple operational settings, including Zero-Export, Load First, Economy, Time Schedule, and EMS modes. Each of these modes is designed to effectively manage the interaction between photovoltaic (PV) generation and load consumption, ensuring that excess energy is efficiently stored in the Battery Energy Storage System and utilized when needed. For example, Zero-Export mode prevents excess PV energy from being sent to the grid and prioritizes battery charging. In Economy mode, the system adjusts its operations based on peak and off-peak periods to enhance cost-effectiveness.
The system is also capable of operating off-grid. When disconnected from the grid, it relies on the Battery Energy Storage System and PV power to supply energy. Additionally, a generator can be used as a backup power source when battery levels are low, providing an extra layer of reliability.
Featuring a bi-directional battery inverter, modular solar charge controller, and a seamless transfer switching cabinet, the system is designed for high efficiency and flexibility. The bi-directional inverter supports a range of capacities and configurations, while the solar charge controller offers up to 5 MPPTs for optimal energy harvesting. The seamless transfer switching cabinet ensures reliable power supply with a rapid switching time of just 10 milliseconds.
For effective monitoring and control, the system includes Enerlog for data logging and Enerview for local configuration. These tools provide real-time insights and facilitate efficient management of the energy storage system.
For an advanced, scalable, and reliable energy storage system, consider MAXBO’s solutions. Their expertise ensures you get a high-performance energy storage system tailored to your needs.
