Parameter
Description
Remarks
LVRT
compensation
power factor of
reactive power in
negative
sequence
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
increment of negative-sequence reactive
current generated by the solar inverter is
20% of the rated current when the AC
voltage decreases by 10% during LVRT. If
you set LVRT compensation power factor
of reactive power in negative sequence
to 0, the increment of negative-sequence
reactive current generated by the solar
inverter is 0 regardless of how much the
AC voltage decreases during LVRT.
Percentage of
LVRT reactive
current limiting
During LVRT, the device 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 device is
50% of the rated current during LVRT.
Threshold of
LVRT zero-
current mode
When Zero current due to power grid
fault is set to Enable, 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.
LVRT mode
Sets LVRT mode. The options are Zero-
current mode, Constant current mode,
Reactive power priority mode, and
Active power priority mode.
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.
This parameter is displayed
when HVRT is set to Enable.
SmartLogger3000
User Manual
6 WebUI Operations
Issue 10 (2022-08-20)
Copyright © Huawei Technologies Co., Ltd.
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