Creating Gridsim Profiles

For the waveform generation, there are three methods that could be used:

1. The preferred method is to create the time-voltage or time-frequency profile, send it to the grid simulator, and then trigger the start of the voltage or frequency profile. This is how the Ametek, Pacific, and Elgar equipment works. You can see an example of this in profile_load() and profile_start() in https://github.com/sunspec/svp_energy_lab/blob/dev/Lib/svpelab/gridsim_ametek.py
2. Alternatively, you can try to issue changes in voltage or frequency using the SVP/python environment as the clock. This is less accurate, but might work for your application.
3. Lastly, you can try to use a waveform generator to send a low voltage signal to the grid simulator. The gridsim would act as an amplifier and scale the arbitrary waveform generator (AWG) input to create the AC power signal. This is similar to how power hardware-in-the-loop systems work. Something along these lines was started here: https://github.com/sunspec/svp_energy_lab/blob/dev/Lib/svpelab/wavegen_awg400.py