Does the grid-connected inverter have reverse current protection

What happens if an inverter fails to supply power to the grid?

If the unplanned islanding effect occurs, the inverter should stop supplying power to the grid within 2s and issue an alarm signal. Passive island protection: Detect the magnitude, frequency and phase of the grid voltage in a real-time manner.

How to use a grid-tie solar inverter?

#1 Use RPR (relay power relay) to isolate the PV plant from the grid by means of tripping the breaker or releasing the contactor if there is any reverse power detected. #2 Use an Export limiter to limit the power generation of the grid-tie solar inverter concerning the power required by the load. #3 Use of PLC as an export limiter.

Does a solar inverter have a power limiting function?

If the solar inverter input has a power limiting function, when the power output of the PV array exceeds the maximum DC input power allowed by the solar inverter, the inverter automatically limits the current operation to the maximum allowable AC output power. Solar inverters should have reliable and complete unplanned island protection functions.

How does a reverse current meter work?

When reverse current is detected, the meter communicates the backflow data to the inverter via RS485 communication. The inverter responds within seconds, reducing its output power to ensure the current flow into the grid is nearly zero. Anti-Backflow Solutions Different configurations are available to meet various scenarios: