Huawei SmartACU2000D Quick Manual page 27

SmartLogger
Home Screen
Running Parameter Descriptions
Parameter Function
Specifies the
PV module
offset
compensation
direction of
voltage
the PID
direction
module.
Specifies the
Maximum
voltages
system DC-
between the
to-ground
PV/AC side
withstand
and the
voltage
ground.
Specifies the
Maximum maximum
output step-up
voltage voltage of the
PID module.
Device Monitoring
Value Description
•
PV– positive offset refers to raising the voltage
between PV– and the ground to above 0 V through
voltage compensation.
PV–
•
Select PV– positive offset for P-type PV modules or
positive
the N-type PV modules that comprise the solar cells
offset
whose positive and negative polarities are on different
sides. For example, P-type PV modules, HIT, CIS, thin-
film PV modules, and CdTe PV modules meet the
requirement for PV– positive offset.
•
PV+ negative offset refers to lowering the voltage
between PV+ and the ground to below 0 V through
voltage compensation.
PV+
• Select PV+ negative offset for the N-type PV modules
negative
that comprise the solar cells whose positive and
offset
negative polarities are on the same side.
(When designing a PV plant, the design institute or user
should ask the PV module vendor about the direction of
voltage compensation for resisting the PID effect.)
Specifies the lower threshold of the maximum voltage
range between the solar inverter DC side (including the
500–1500 solar inverter, PV module, cable, SPD, and switch) and the
V ground.
(The default value is 1000 V. For the 1500 V solar
inverters, the recommended value is 1500 V.)
•
For the 1000 V/1100 V solar inverters, the value ranges
from 0 V to 550 V. The parameter value indicates the
maximum DC step-up phase-ground voltage.
•
For the 1500 V solar inverters, the value ranges from 0
0–800 V
V to 800 V. The parameter value indicates the
maximum DC step-up phase-ground voltage.
(The default value is 500 V. For the 1500 V solar inverters,
the recommended value is 800 V.)
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PID Function Menu