In some countries, the grid company may charge the end-users by calculating each phase power consumption independently rather than three-phase power consumption totally. The standard three-phase power control of energy storage system that averaging three power outputs according to the total power consumption, cannot fit that application well, and it will cause the end-user to be charged by the grid company even their ESS has enough power output.
As demonstrated, during the operation of standard three-phase power control, the sum of three-phase power consumption of the utility meter will be OkW, however, phase L1 will still take 2kW power from the grid. And the end-user needs to pay for the 2kW power consumptionofL1 if the grid company charges the end-user by calculating each phase power consumption independently.
Perfect Solution of GROWATT Smart Phase-level Power Control
As demonstrated, the solar system generates 9.3kW power, 4kW to charge the battery system,3.3kW to the load in phase L1, and 2kW to the load in phase L3. As the result, the sum of the three-phase power consumption of the utility meter will be OkW, and meanwhile, there is not any power taking from the grid anymore, which help customers get rid of charging from the grid.
If the customer enables the smart phase-level export limit function, when the battery system is |f the customer enables the smart phase-level export limit function, when the battery system is consumption of each phase. As demonstrated, even there is 1 0kW solar power generation, the SPH will only output 5kW power for load consumption exactly. Finally, there will be no surplus solar power exporting to the grid exactly for each phase.
Three Phase 100% Unbalanced Output
In addition, GROWATT SPH 4000-10000TL3 BH-UP model supports three-phase 100% unbalanced output in both grid-tied and off-grid mode. As demonstrated, the 1 OkW model can output max.3.3kW power in phase L1 and zero power output in phase L2.
The max. single -phase power output of SPH 10000TL3 BH-UP is limited at 3.3kW, if the single-phase load consumption is larger than 3.3kW, then it will take the power from the grid to compensate for the shortage part.
Other Applications Work With Grid-tied PV Inverters
Smart phase-level power control & single-phase grid-tied PV inverter
When the single-phase grid-tied PV inverter generates 2kW in phase L1 and 2 kW load consumption in phase L3, 2kW power from the grid-tied PV inverter will flow to the SPH，meanwhile, SPH will offer 2kW power to the load in phase L3. Finally, total 5kW solar input power will be used to charge the battery.
Smart phase-level power control & three-phase grid-tied PV inverter
When the three-phase grid-tied PV inverter generates 2kW in each phase and 2 kW load consumption in phase L3, 4kW power of phase L1 and phase L2 generated from the grid-tied PV inverter will flow to SPH, finally total 6kW power will charge the battery, including 4kW power from the grid-tied PV inverter and 2kW solar input power.
How to Choose the Suitable Power Control Function?
A different utility company in different areas charges the end-user in different ways, but in the most three-phase power supply System, If can be aivided INfO TWO ways.
1.Utility meter calculates by three-phase power consumption totally
2.Uillity meter calculates by single phase power consumption independently
Corresponding guidance as below
GROWATT SPH 4000- 10000TL3 BH-UP supports both power control methods, detailed setting guidance please refer to the user manual.