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Analysis of power diagram
Given the high density of information, analysis of a power diagram is not too
simple. For better understanding, some points in time of a power diagram are
analyzed in what follows.
Figure 50:
Analysis of power diagram
1 It is dark (no generation (yellow)). Consumption (blue) and discharging (red) have the same
value. Consumption is therefore covered by the discharging of the storage system.
2 Generation (yellow) is approx. 1000 watts. This is used to cover consumption (blue). The
intelligent charging management system has postponed charging; the charging buffer is needed
to avoid breaching the feed-in limit. The energy that is not required is fed into the grid.
3 Generation has increased to approx. 3300 watts. This is used to cover consumption (blue) and
charge the storage system (green) at a minimal level. Charging with higher power is prevented
by the intelligent charging management system. This function ensures that storage capacity is
kept free in order to store part of the midday peak in the storage system later.
4 Consumption (blue) exceeds generation and must be supplemented by the storage system.
5 A breach of the feed-in limit is no longer expected. PV generation covers consumption (blue)
and the surplus is stored in the battery (green) so that it will be fully charged by evening.
6 From this point PV generation is no longer sufficient to cover consumption. The difference is
discharged from the storage system.
7 The storage system discharge (red) covers total consumption.
8 The storage system is discharged and consumption is covered by usage from the public grid.
KD-262 | Part-No 52199 | EN | Version 1.00 Page 97 of 115