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KACO blueplanet 3.0 NX1 M2 KACO blueplanet 3.7 NX1 M2 KACO blueplanet 4.0 NX1 M2 KACO blueplanet 5.0 NX1 M2
Fig. 100.
Diagram for increasing self-consumption
Legend
1
Control command to unit 70% + self-consumption
3
PV power gained through self-consumption
2
Energy demand of single-family house (green area)
4
PV power lost despite own consumption
Due to the calculation option in the feed-in meter/data logger, the PV system can be used more efficiently and thus provide
more self-consumption energy.
In Fig. 100 also shows that there is still a red area (lost energy) because self-consumption has dropped to 0, but the PV
system could have supplied even more electricity. If self-consumption falls to 0 kW, the 70 % regulation applies again at this
point.
The Zero feed-in regulation, on the other hand, must ensure that no electricity is fed into the public grid. Depending on
self-consumption, the PV system output may be switched on in order to use the generated energy oneself and thus not
have to draw anything from the public grid and pay for it.
For this purpose, the feed-in meter must be connected to the data logger so that it can calculate the control commands. If
no feed-in meter is connected to the data logger, it constantly sends a control command with 0% feed-in maximum to the
inverters. This means that no feed-in may take place.
Fig. 101.
Zero Feed-in diagramm
Legend
1
Available PV power (red area)
3
External supply (yellow area)
2
Energy demand of single-family house (green area)
00:00 02:00 04:00 06:00 08:00 10:00 12:00 14:00 16:00 18:00 20:00 22:00 00:00
Uhrzeit [hh:mm]
00:00 02:00 04:00 06:00 08:00 10:00 12:00 14:00 16:00 18:00 20:00 22:00 00:00
Uhrzeit [hh:mm]
1
3
2
4
3
1
2
Con
tr
ol
co
mma
nd
to i
nv
er
ter
100
90
80
70
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
Po
w
er
[k
W
]
Pow
er
[k
W
]
