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Running parameter descriptions
Parameter
Function
PV module
Specifies the
compensation
offset direction of
voltage
the PID module.
direction
Specifies the
voltages between
Maximum
the PV side and
system DC-to-
the ground and
ground
between the AC
withstand
side and the
voltage
ground in normal
mode.
Specifies the
highest step-up
Maximum
voltage of the PID
output voltage
module in normal
or commissioning
mode.
If a smart array controller with two PID modules is used in the scenario with a dual-split transformer
and the SUN2000s connecting to one PID module have the same configurations as the SUN2000s
connecting to the other PID module, you are advised to set the operating parameters of both PID
modules to the same.
Value
Description
⚫
PV– positive offset refers to raising the voltage
between PV– and 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 ground to below 0 V through
voltage compensation.
⚫
Select PV+ negative offset for the N-type PV
PV+
modules that comprise the solar cells whose positive
negative
and negative polarities are on the same side.
offset
(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 SUN2000 DC side (including the
500–
SUN2000, PV module, cable, SPD, and switch) and the
1500 V
ground.
(The default value is 1000 V. For the 1500 V SUN2000,
the recommended value is 1500 V.)
⚫
For the 1000 V/1100 V SUN2000, the value ranges
from 0 V to 550 V. The parameter value indicates the
maximum DC step-up voltage between PV and the
ground.
0–800 V
⚫
For the 1500 V SUN2000, the value ranges from 0 V
to 800 V. The parameter value indicates the maximum
DC step-up voltage between PV and the ground.
(The default value is 500 V. For the 1500 V SUN2000,
the recommended value is 800 V.)
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