User's Manual

Table Of Contents
SmartLogger3000
User Manual
6 WebUI Operations
Issue 04 (2020-03-11)
Copyright © Huawei Technologies Co., Ltd.
94
Parameter
Description
Threshold for triggering LVRT
(V)
Specifies the threshold for triggering LVRT. The threshold settings should
meet the local grid standard.
LVRT reactive power
compensation factor
During LVRT, the inverter needs to generate reactive power to support the
power grid. This parameter is used to set the reactive power generated by
the inverter.
HVRT
HVRT is short for high voltage ride-through. When the grid voltage is
abnormally high for a short time, the inverter cannot disconnect from the
power grid immediately and has to work for some time.
Threshold for triggering HVRT
(V)
Specifies the threshold for triggering HVRT. The threshold settings should
meet the local grid standard.
HVRT reactive power
compensation factor
During HVRT, the inverter needs to generate reactive power to support the
power grid. This parameter is used to set the reactive power generated by
the inverter.
VRT exit hysteresis threshold
Specifies the LVRT/HVRT recovery threshold.
LVRT undervoltage protection
shield
Specifies whether to shield the undervoltage protection function during
LVRT.
Grid voltage protection shield
during VRT
Specifies whether to shield the undervoltage protection function during
LVRT or HVRT.
Grid voltage jump triggering
threshold (%)
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.
Zero current due to power grid
fault
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.
Active islanding protection
Specifies whether to enable the active islanding protection function.
Passive islanding protection
Specifies whether to enable the passive islanding protection function.
Voltage rise suppression
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.
Voltage rise suppressing reactive
power adjustment point (%)
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.
Voltage rise suppressing active
power derating point (%)
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.
Voltage rise suppression P-U
curve
The standards of certain countries and regions require that the P-U curve be
set.
Voltage rise suppression Q-U
curve
The standards of certain countries and regions require that the Q-U curve be
set.