Can overvoltage-induced inverter disconnections prevent solar power losses?

Scientists at the University of South Australia have identified strategies to prevent solar power losses when overvoltage-induced inverter disconnections occur due to voltage limit violations.

Can solar inverters reduce PV curtailment?

In such grids, solar inverters are not highly effective in reducing the PV curtailment issue. They can only reduce PV curtailment when combined with storage. Reactive power variations have a relatively limited impact on voltage.

What is a fast overvoltage protection mechanism?

Inverters, whether used for photovoltaic (PV) systems or energy storage facilities, typically include internal fast overvoltage protection mechanisms designed primarily to protect the inverter itself from damaging transients.

How do I control a PV inverter?

To control the PV inverter, an IEEE Std 1547-2018-compliant control hardware, the Austrian Institute of Technology Smart Grid Controller (known as the ASGC or AIT SGC), was coupled with the RTS . This configuration allows to evaluate how controller-hardware connected to the PV system would react to the SLG fault and to assess a possible GFOV.

What is the maximum overvoltage of a 500 kW inverter?

Similarly, Fig. 14(b) demonstrates the overvoltages when the load pf is 0.9 and the apparent power is 463 kVA. This yields an active power output of 416.6 kW, and a GLR of 1.2 if the inverter output is kept constant at 500 kW. The observed maximum overvoltage in these experiment was close to 29%.

Why is my solar inverter spiky?

Severe over-voltage: The inverter has completely shut off as the voltage is past the threshold for extended periods of time Moderate over-voltage: The voltage is on the edge of the threshold and the inverter is turned off for a very short period only to turn back on; thus the spiky solar profile. What can you do to resolve this?