Setting Peak Load Shaving With Increased Self-Consumption - SMA INVERTER MANAGER Instrucciones De Instalación

SMA Solar Technology AG

5.2.10 Setting Peak Load Shaving with Increased Self-consumption:

igure 27: LCS-Tool - Setting the Peak Load Shaving
function
INFORMATION
This function can only be used in battery
storage systems.
• Recommendation: In PV systems, leave
this function disabled.
With the Peak Load Shaving function in combination
with the power analyzer UMG 604-PRO from
Janitza electronics GmbH, the behavior of the
Sunny Tripower Storage 60 on the power exchange
at the grid-connection point can be optimized in
order to save energy costs. Adding the
SoC threshold parameter makes it possible to
combine peak load shaving and increased
self-consumption. As a result, this combination makes
it possible to further reduce energy costs.
The SOC threshold parameter divides the utilization
range of the battery into 2 subranges: one subrange
above SOC threshold and one subrange below
SOC threshold. In these subranges, different values
for Consumption Limit and Feed-In Limit can be
entered.
Input values for Peak Load Shaving
The Consumption Limit value specifes the maximum
power that may be obtained from the utility grid. If
this power is exceeded, the storage system
discharges to cut the peak load. The eed in Limit
value specifes the power from which the storage
system recharges. This value depends on the peak
loads to be expected and must be adapted to the
application during planning and commissioning.
Installation Manual
An input value for Consumption Limit is interpreted
by the SMA Inverter Manager as a positive value, an
input value for Feed-in Limit as a negative value.
If the SMA Inverter Manager, for example, has to
limit the grid reference power to +50 kW and charge
the battery below a grid reference power of
+10 kW, the value 50 must be entered for
Consumption Limit and the value -10 for Feed-in
Limit.
In order for the peak load shaving to work, the
following conditions must be observed when
confguring the values:
• The peak load to be cut must not be greater
than the output power of the battery inverter.
• The energy of the peak load must not be
greater than the capacity of the battery.
• The charging energy must be slightly greater
than the discharging energy D.
• In case of signifcant changes in the load or
generation profle, the parameters must be
adjusted accordingly.
Input values for increased self-consumption:
If the value for Consumption Limit and the value for
Feed-in Limit is set to 0, this corresponds to the
classical increased self-consumption of PV power
without the shaving of peak loads.
IMVIOBOX-IA-xx-18
5 LCS-Tool
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