Huawei SmartLogger3000 User Manual page 101

SmartLogger3000
User Manual
Parameter
Grid voltage jump triggering
threshold (%)
Zero current due to power grid
fault
Active islanding protection
Passive islanding protection
Voltage rise suppression
Voltage rise suppression reactive
adjustment point (%)
Voltage rise suppression active
derating point(%)
Voltage rise suppression P-U
curve
Voltage rise suppression Q-U
curve
Frequency change rate
protection
Frequency change rate
protection point (Hz/s)
Frequency change rate
protection time (s)
Soft start time after grid failure
(s)
Power Adjustment Parameters
Parameter
Remote power schedule
Schedule instruction valid
duration (s)
Issue 03 (2020-01-10)
Description
Specifies the LVRT or HVRT threshold for triggering a transient voltage
jump of a power grid. A transient voltage jump indicates that the inverter
cannot immediately disconnect from the power grid when the power grid is
abnormal due to transient changes.
Specifies the working mode of the solar inverter during LVRT or HVRT. If
this parameter is set to Enable, the output current of the solar inverter will
be less than 10% of the rated current during LVRT or HVRT.
Specifies whether to enable the active islanding protection function.
Specifies whether to enable the passive islanding protection function.
The standards of certain countries and regions require that when the output
voltage exceeds a certain value, the inverter must suppress voltage rise by
outputting reactive power and reducing active power.
The standards of certain countries and regions require that the inverter
generate a certain amount of reactive power when the output voltage
exceeds a certain value.
The standards of certain countries and regions require that the active power
of the inverter be derated according to a certain slope when the output
voltage exceeds a certain value.
The standards of certain countries and regions require that the P-U curve be
set.
The standards of certain countries and regions require that the Q-U curve be
set.
Set this parameter to Enable to protect the inverter when the grid frequency
changes too fast.
Specifies the frequency change rate protection threshold.
The inverter is protected when the grid frequency change duration exceeds
the value.
Specifies the time for the power to gradually increase when the inverter
restarts after the power grid recovers.
Description
If this parameter is set to Enable, the inverter responds to the scheduling
instruction from the remote port. If this parameter is set to Disable, the
inverter does not respond to the scheduling instruction from the remote port.
Specifies the time for maintaining the scheduling instruction.
When this parameter is set to 0, the scheduling instruction takes effect
permanently.
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