Setting options for the multiuse function
Setting option | Explanation |
|---|---|
Threshold value for peak load shaving | Limiting value for the grid supply from which the battery is to be used to reduce peak loads. The battery is only discharged if this threshold at the point of interconnection is exceeded. Only whole numbers are accepted as an entry. |
Limit for switching operating modes (multiuse): battery state of charge (SoC) | Between the maximum state of charge of the battery and the Limit for switching operating modes, the battery is used solely for increased self-consumption. Between the Limit for switching operating modes and the minimum battery state of charge, the battery is only used for peak load shaving |
Battery charging limit | The Battery charge controls the charging behavior of the inverter depending on the Limit for switching operating modes. If the Battery charge and the Limit for switching operating modes are set to the same value, the battery will be recharged with energy from both the PV system and the utility grid. For example, if the Battery charge is set to 50% and the Limit for switching operating modes is set to 59%, and when the state of charge is between 50% and 59%, the battery will be recharged only with energy from the PV system. If the battery state of charge is below 50%, the utility grid is also used to recharge the battery. |
Billing interval in the tariff | Interval for billing the performance prices: If the tariff of your electric utility company does not specify an interval for billing the performance prices or if the interval for billing the performance prices is not known, select the Unknown option. |
Adjustment | If no value is specified for the Billing interval in the tariff, the option Immediate adjustment is always active. In this case, peak load shaving is controlled according to the instantaneous value of the grid supply at the point of interconnection. If a value for the Averaging interval in the tariff is specified, the option Averaging interval can be selected. In this case, peak load shaving is controlled according to the averaging value of the grid supply at the point of interconnection. If a peak load that is too high cannot be curtailed, the resulting overload can be compensated for at another time in the averaging interval. It can happen that the inverter curtails the grid-supplied power even further than specified by the threshold for peak load shaving. |
Automatic threshold adjustment | Only if a value for the Averaging interval in the tariff is specified, can the function Autom. threshold adjustment be used. If the option Adaptively increase threshold is activated and the threshold for peak load shaving could not be observed despite adjustment via the averaging interval, the threshold is automatically increased. Exceeding the original threshold specifies the measure for the adaptive increase. Optionally, the threshold for peak load shaving can be reset to the originally entered value at the end of the billing period. |
Battery charge | The parameter Battery charge is the recharging threshold that controls the charging behavior of the inverter during peak load shaving. If the Battery charge and the Limit for switching operating modes are set to the same value, the battery will be recharged with energy from both the PV system and the utility grid. If different values are set, the recharging of the battery is subject to an algorithm: When the battery is discharged (starting from a higher state of charge) or charged (starting from a lower state of charge), this algorithm determines whether the battery is charged from the PV system only, or it is charged from the PV system and the utility grid:
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