Reactive power compensation through grid connected inverter
I would suggest zones for GTI's needed to generate real power are not always close to zones where active PFC correction is needed, so unless there is a smart grid to regulate the GTI remotely from the utility as the owner, then unity PF generates the maximum real power to the grid and PF correction is done by other remote means, but this is guesswork from seeing a few MW GTI PV farms using Huawei GTI's.  Other farms added to the grid did cause harmonic ingress and increase the rate of 60A 600V fuses blows from external harmonic farms while the outgoing fundamental was only 45A.  So the customer installed bigger fuses.

The injected current power must be regulated by comparing an ideal sine wave PLL synced to the grid to generate a reference current waveform for RMS current according to the remote set parameters and safety trigger circuits. 

The phase of the current could be offset by remote settings dynamically if active PFC was needed.  This would offset the reference sine wave inside to be compared with the current waveform being generated.

I suppose high pulse energy loads could be supplied by customers with a solar farm in order to reduce their peak power demands from the grid. But often cap banks might be more suitable with the right transformer impedance to their needs. e.g. arc furnaces and smelters.


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