Huawei SmartLogger3000 User Manual page 103

SmartLogger3000
User Manual
Parameter
Trigger frequency of over
frequency derating (Hz)
Quit frequency of over
frequency derating (Hz)
Cutoff frequency of
overfrequency derating (Hz)
Cutoff power of overfrequency
derating (%)
Frequency detection filter time
(ms)
Power drop gradient of overfreq
derating (%/s)
Power recovery gradient of
overfrequency derating (%/min)
Voltage derating
Voltage derating start point (V)
Voltage derating stop point (V)
Voltage derating end power (V)
Communication disconnection
fail-safe
Communication disconnection
detection time (s)
Fail-safe power threshold (%)
Added Apparent power baseline
(Smax) (kVA)
Added Active power baseline
(Pmax) (kW)
Frequency sensitive mode
Frequency sensitive mode droop
Issue 03 (2020-01-10)
Description
The standards of certain countries and regions require that the output active
power of inverters be derated when the power grid frequency exceeds a
certain value.
Specifies the frequency threshold for exiting overfrequency derating.
Specifies the frequency threshold for cutting off overfrequency derating.
Specifies the power threshold for cutting off overfrequency derating.
Specifies the frequency detection filter time.
Specifies the decrease rate of the overfrequency derating power.
Specifies the recovery rate of the overfrequency derating power.
If this parameter is set to Enable, the active power of the inverter will be
derated according to a certain slope when the grid voltage exceeds the
voltage that triggers overfrequency derating.
Specifies the start point for voltage derating.
Specifies the stop point for voltage derating.
Specifies the power threshold for cutting off voltage derating.
In the inverter export limitation scenario, if this parameter is set to Enable,
the inverter will perform active power derating by percentage when the
communication between the inverter and the SmartLogger or Smart Dongle
is disconnected for more than the time specified by Communication
disconnection detection time.
Specifies the fail-safe detection time for the disconnection between the
inverter and the SmartLogger or Smart Dongle.
Specifies the derating value of the inverter active power by percentage.
Adjusts the apparent output baseline of the inverter.
Adjusts the active output baseline of the inverter.
The standards of certain countries and regions require that if the power grid
frequency fluctuates around a certain value, the inverter needs to fine-tune
the active power output based on Frequency sensitive mode droop to help
stabilize the power grid frequency. In this case, set this parameter to Enable
Specifies the droop of the active power output.
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