percentage of the total generation is from inverters and there is even a full inverter-based grid? Does it make sense to emulate SGs? Inverters have much faster dynamics, as they are not dependent on mechanical characteristics, so an inverter-based grid could respond more quickly to changes. There is no definitive answer to this question; more research is required. One of the biggest challenges is not in the technology but in changing operators' thinking and giving up knowledge gained from 150 years of operation. One of the advantages of inverters is that they are software controlled. Therefore, the software can be updated to change their behavior, and the control parameters can be adapted to changing grid conditions. As the number of inverters in the grid increases, it may be that SGs will change so that they act as slow base load generators. It is 40 30 20 10 -20 -10 -30 -40 1 Waveform V12 Waveform V23 Waveform V31 (a) 100 50 -50 -100 1 2 Waveform I1 Waveform I2 Waveform I3 (b) Figure 14. The (a) voltage and (b) current waveforms recorded at the 33-kV connection point of the GF-BESS before and after the islanding instant marked by the red vertical line. 50 IEEE Electrification Magazine / MARCH 2022 (A) (kV) 11:41:25.600 a.m. 11:41:25.650 a.m. 11:41:25.700 a.m. 11:41:25.750 a.m. 11:41:25.800 a.m. 11:41:25.600 a.m. 11:41:25.650 a.m. 11:41:25.700 a.m. 11:41:25.750 a.m. 11:41:25.800 a.m.