| 摘要 |
In order to connect a photovoltaic system (2) to an alternating-current network, wherein a direct voltage generated by the photovoltaic system (2) is measured, wherein when the direct voltage reaches a minimum voltage for attempting connection, an inverter (4), which inverts the direct voltage into an output alternating voltage, is activated, and wherein the output alternating voltage is synchronized with a network alternating voltage of the alternating-current network (3), the inverter (4) is connected to the alternating-current network (3) if the synchronization has occurred and the direct voltage exceeds a minimum voltage for continuation of the connection that is less than or exactly equal to the minimum voltage for attempting connection. If the direct voltage generated by the photovoltaic system (2) drops, the inverter (4) is first deactivated, and the deactivated inverter (4) is disconnected from the alternating-current network (3) only when the direct voltage for the deactivated inverter (4) falls below a switch-off maximum voltage that is greater than or exactly equal to the peak value of the network alternating voltage and less than or exactly equal to the minimum voltage for continuation of the connection. |
