Sungrow Logger4000 User Manual

8 Grid Dispatching Function User Manual
step 3 Set remote dispatching parameters. For specific parameter description, refer to the following
table.
table 8-1 Parameters description
Parameters Description
Control Method
• Open-Loop Control: Active dispatching command is sent to
the power output port of the inverter, thereby achieving active
power control.
•
Closed-Loop Control:
- When not using a Smart Energy Meter, at the start time,
the active power command is set as the target value.
Multiple adjustment algorithms are applied to calculate the
proportional value of active power compensation, which
is then sent to the power output port of the inverter. This
method is generally used for fast and accurate active
power regulation.
- When using a Smart Energy Meter, at the start time,
the active power command is set as the target value,
and the active power is collected by the meter as an
input parameter. A closed-loop control algorithm is then
used to calculate the proportional value of active power
compensation, which is then sent to the power output
port of the inverter. This method is generally used for
anti-backflow or zero power feed-in.
Northbound
Communication
Abnormal Protection
When there is a problem with the connection between the logger
and the dispatching equipment or server, the inverter may be
uncontrolled and impact the grid. If this function is enabled, set
to limit the inverter power or shut down the inverter to achieve
protection.
Query Recovery Time
The Data Logger receives the remote scheduling command and
will stop querying data during this time period.
Range: 0~60s
Frame Delay
Time interval for data interaction with the inverter while executing
the power control function.
Range: 4~70ms
Target Value Filter
It can be set to “Identical Values”, “Change Rate≤0.5%Pn”, or “Do
Not Filter”.
Filter Time Set according to actual conditions.
Select Energy Meter or
Transformer*
Select a Smart Energy Meter or transformer for power regulation
Control Cycle*
Time interval of delivering dispatching commands
Range: 5~60s
74

Sungrow Logger4000 Specifications

General

Brand	Sungrow
Model	Logger4000
Category	Data Loggers
Language	English