Parameter Description Remarks
LVRT When the power grid voltage is
abnormally low for a short time, the
SUN2000 cannot disconnect from the
power grid immediately and has to
work for some time. This is called LVRT.
N/A
LVRT threshold (V) Species the threshold for triggering
LVRT.
The threshold settings should meet the
local grid standard.
Vn represents the rated voltage.
LVRT undervoltage
protection shield
Species whether to shield the
undervoltage protection function
during LVRT.
N/A
LVRT reactive power
compensation
power factor
During LVRT, the SUN2000 needs to
generate reactive power to support the
power grid. This parameter is used to
set the reactive power generated by
the SUN2000.
For example, if you set LVRT
reactive power compensation
power factor to 2, the reactive
current generated by the
SUN2000 is 20% of the rated
current when the AC voltage
drops by 10% during LVRT.
HVRT When the power grid voltage is
abnormally high for a short time, the
SUN2000 cannot disconnect from the
power grid immediately and has to
work for some time. This is called high
voltage ride-through (HVRT).
N/A
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 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.
N/A
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
SUN2000-(50KTL, 60KTL, 65KTL)-M0
User Manual 7 Man-Machine Interactions
Issue 11 (2024-02-02) Copyright © Huawei Technologies Co., Ltd. 97
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