Thanks for your answers, everyone!
I guess we can consider this one solved. It proves that I still have a lot to learn about AC! (I have a background in HVDC)
Hi guys!
I've looked around a bit to find a good forum to post this question, and after reading through a few other threads here I think I may have found the right one!
I was analyzing a disturbance we had in our distribution grid (20 kV) and while examining the TFR:s I found a strange...