General
Battery system groups
Several groups of battery systems can be created. Within a group, all settings for the battery systems it contains are identical. If several groups are created, there are a few rules to observe:
- the coupling type must be the same in all groups.
- for DC-coupled systems
- the number of battery system groups must correspond to the number of inverter groups
- only one battery system can be connected to an inverter group at any one time
- the number of battery systems in a battery system group must correspond to the number of inverters in the inverter group
To put it simply, with DC-coupled battery systems, care must be taken to ensure that each battery system is actually connected to exactly one inverter, but that no more than one DC-coupled battery system is defined per inverter.
Selection of battery system
To select a battery system, proceed as follows:
-
Selection of the battery system
Selection Battery system
Use the Companies and Model drop-down menus to select the desired battery system. With the button
you get detailed information about the selected battery system. Alternatively, click the
button to access the database of battery systems. The desired battery system can also be selected there.If the desired battery system does not exist in the database, you can create and use your own data records.
-
Determining the number of battery systems
A maximum of 20 systems can be selected. The number can either be entered directly, or the current value can be incremented or decremented. using the arrow keys.
Battery system information
Informations Battery system
| Parameter | Description |
|---|---|
| Installed Power | Rated power of the battery inverter |
| Charging power (U0) | Required charging power for boost charging of batteries in kW. Based on the storage capacity of the battery and the boost parameters (U0 charge) of the battery charging strategy |
| Battery | Rated power of battery inverter in kW |
| Load Peak | Maximum power of all consumers in kW |
| Usable battery energy | Calculated from the battery voltage DC, the battery capacity C10 and the usable battery charge range (Maximum SOC - Minimum SOC) |
| Average consumption at night | Nightly average consumtion of all consumer in kWh |
| Recommendation HTW | Recommended size by HTW Berlin [1] |
| Battery | Usable battery energy in kWh |
| Average consumption per 24h | Daily average value of all consumers in kWh |
| Maximum consumption per 24h | Maximum daily consumption of all consumers in kWh |
The electrical charge stored in a battery (galvanic cell) is called capacity.
For further information and studies on battery storage, see Research Group “Solarspeichersysteme” at HTW Berlin.
See also