Operations Related To The Special User - Huawei SUN2000-50KTL-M0 User Manual

SUN2000-(50KTL, 60KTL, 65KTL)-M0
User Manual
Parameter
MBUS
communication
Upgrade delay
String monitor
String detection
reference
asymmetric
coefficient
String detection
starting power
percentage (%)
Tracker controller
Duration for
determining short-
time grid
disconnection (ms)

7.2.2 Operations Related to the Special User

Issue 06 (2020-07-07)
Description
For SUN2000 models that support
both RS485 andMBUS
communication, when RS485
communication is used, you are
advised to set MBUS
communication to Disable to reduce
power consumption.
Upgrade delay is mainly used in the
upgrade scenarios where the PV
power supply is disconnected at night
due to no sunlight or unstable at
dawn or dusk due to poor sunlight.
The SUN2000 monitors PV strings in
real time. If any PV string is
abnormal (such as the PV string is
shaded or the energy yield
decreases), the SUN2000 generates
an alarm to remind maintenance
personnel to maintain the PV string
in a timely manner.
Specifies the threshold for
determining PV string exception. The
false alarms caused by fixed shadow
shading can be controlled by
changing this parameter.
Specifies the threshold for starting PV
string exception detection. The false
alarms caused by fixed shadow
shading can be controlled by
changing this parameter.
Selects a controller vendor.
The standards of certain countries
and regions require that the
SUN2000 should not disconnect from
the power grid if the power grid
experiences a short-time failure. The
SUN2000 output power should be
recovered immediately after the fault
is rectified.
Copyright © Huawei Technologies Co., Ltd.
7 Man-Machine Interactions
Remarks
N/A
After the SUN2000 upgrade starts,
if Upgrade delay is set to Enable,
the upgrade package is loaded
first. After the PV power supply
recovers and the activation
conditions are met, the SUN2000
automatically activates the
upgrade.
If PV strings are easily shaded, you
are advised to set String monitor
to Disable to prevent false alarms.
This parameter is displayed when
String monitor is set to Enable.
N/A
N/A
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