Parameter Description
Threshold for triggering
LVRT (V)
Species the threshold for triggering LVRT. The threshold settings
should meet the local grid standard.
This parameter is displayed when LVRT is set to Enable.
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.
● This parameter is displayed when LVRT is set to Enable.
● For example, if this parameter is set to 2, the reactive power
generated by the inverter is 20% of the rated power when the
AC voltage drops by 10% during LVRT.
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)
Species the threshold for triggering HVRT. The threshold settings
should meet the local grid standard.
This parameter is displayed when HVRT is set to Enable.
HVRT compensation power
factor of reactive power in
positive sequence
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.
This parameter is displayed when HVRT is set to Enable.
Grid voltage protection
shield during VRT
Species whether to shield the undervoltage protection function
during LVRT or HVRT.
This parameter is displayed when LVRT or HVRT is set to Enable.
VRT exit hysteresis threshold Species the LVRT/HVRT recovery threshold.
● This parameter is displayed when LVRT or HVRT is set to
Enable.
● LVRT recovery threshold = Threshold for triggering LVRT + VRT
exit hysteresis threshold
● HVRT recovery threshold = Threshold for triggering HVRT + VRT
exit hysteresis threshold
Grid voltage jump triggering
threshold (%)
Species 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
Certain countries and regions have requirements on the output
current during high/low voltage ride-through. In this case, set this
parameter to Enable. After this parameter is set to Enable, the
output current is less than 10% of the rated current during
high/low voltage ride-through.
This parameter is displayed when LVRT or HVRT is set to Enable.
SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
User Manual
7 Man-Machine Interactions
Issue 11 (2020-08-30) Copyright © Huawei Technologies Co., Ltd. 84
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