No. Parameter Description Remarks
16 HVRT gradient K2 During HVRT, the solar inverter
needs to generate negative-
sequence reactive power to
support the power grid. This
parameter is used to set the
negative-sequence reactive power
generated by the solar inverter.
For example, if you set HVRT
gradient K2 to 2, the increment
of negative-sequence reactive
current generated by the solar
inverter is 20% of the rated
current when the AC voltage
increases by 10% during HVRT.
17 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.
18 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
19 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.
20 Power quality
optimization mode
If this parameter is set to Enable,
the inverter output current
harmonics will be optimized.
-
SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual 7 Man-Machine Interactions
Issue 02 (2022-06-30) Copyright © Huawei Technologies Co., Ltd. 76
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