4 Product Overview
SMA Solar Technology AG
Operating manual
EDMM-10-BE-en-20
21
Zero export
Some grid operators permit connection of PV systems only on condition that no active power is fed
into the utility grid. The PV energy is therefore consumed exclusively at the place where it is
generated.
This product enables the limitation of the active power feed-in of the connected SMA inverters and
inverters of other manufacturers, provided these are connected via SunSpec Modbus and support
this function, to 0% with active closed-loop control of specifications at the grid-connection point.
Reactive Power Control
The reactive power control can take place through direct parameter settings (Q, cos φ) in the
installation assistant or a variable specification from the grid operator via the Modbus interface or
via analog signals. The reactive power control as characteristic curve function can also be
regulated as a function of the voltage at the grid-connection point Q(V). The values are specified as
a percentage of the maximum AC power. A proper meter for measuring the relevant electrical
variables (V, P, Q) is required at the grid-connection point.
Direct marketing
A direct marketer can use the product for remotely controlling the system via the built-in direct
marketing interface. In this process, control signals of the direct marketer are transferred to the
system. The function is activated via the installation assistant of the grid management services in the
product.
Summary of Contents for DATA MANAGER M
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