Huawei SUN2000-100KTL Series User Manual page 100

SUN2000-(100KTL, 110KTL, 125KTL) Series
User Manual
Parameter
LVRT compensation power
factor of reactive power in
positive sequence
LVRT compensation power
factor of reactive power in
negative sequence
Percentage of LVRT reactive
current limiting
Threshold of LVRT zero-current
mode
LVRT mode
LVRT characteristic curve
HVRT
HVRT triggering threshold (V)
Issue 07 (2020-09-15)
Description
During LVRT, the solar inverter needs to generate positive-
sequence reactive power to support the power grid. This
parameter is used to set the positive-sequence reactive power
generated by the solar inverter.
For example, if you set LVRT compensation power factor of
reactive power in positive sequence to 2, the positive-
sequence reactive current generated by the solar inverter is
20% of the rated current when the AC voltage decreases by
10% during LVRT.
During LVRT, 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 LVRT compensation power factor of
reactive power in negative sequence to 2, the negative-
sequence reactive current generated by the solar inverter is
20% of the rated current when the AC voltage decreases by
10% during LVRT.
During LVRT, the solar inverter needs to limit the reactive
current.
For example, if you set Percentage of LVRT reactive current
limiting to 50, the reactive current upper limit of the solar
inverter is 50% of the rated current during LVRT.
When Zero current due to power grid fault is enabled, if the
power grid voltage is less than the value of Threshold of LVRT
zero-current mode during LVRT, the zero current mode is
used. Otherwise, the mode configured in LVRT mode is used.
Sets LVRT mode. The options are Zero-current mode,
Constant current mode, Reactive power priority mode, and
Active power priority mode.
Specifies the low voltage ride-through capability of the
inverter.
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).
Specifies the threshold for triggering HVRT. The threshold
settings should meet the local grid standard.
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