12 Appendix III: AS/NZS 4777.2 Compliant User Manual
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12.3.2 Volt-watt Response for Battery Charging
When the power from the grid is required to charge the energy storage system, the
import power from the grid varies in response to the grid voltages. The response
curve is defined by the voltage reference values and the corresponding power
consumption from the grid for charging energy storage.
he Volt-watt response mode for battery charging is
enabled by default.
Set four grid voltage reference values. The output
power of the inverter will vary in response to the grid
voltages.
Fig. 12-4 Vtg-Watt Response Mode for Battery Charging
12.3.3 Frq-Watt Response
Tab. 12-5 Description of Frq-watt Parameters
Parameter Description Default Range
OverFrq
Start
The Start frequency value for
over-frequency response
50.25 Hz 50.25 Hz–52.00 Hz
OverFrq
End
The Stop frequency value for
over-frequency response
52.00 Hz 51.00 Hz–52.00 Hz
UnderFrq
Start
The Start frequency value for
under-frequency response
49.75 Hz 45.00 Hz–50.00 Hz
UnderFrq
End
The Stop frequency value for
under-frequency response
49.00 Hz 45.00 Hz–50.00 Hz
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