Have to also correct you. AC losses are also reduced by...

Have to also correct you. AC losses are also reduced by increasing voltage hence transmission being 500KV. Uou see Power is Watts (heat) p=I(sq)r. BUT power also = V*I. So to reduce I and R is the cable characteristics, unchangeable, and keep that given power rating on the grid we must increase V, voltage. In DC we blast HP air through the arc when a CB opens which physically bends the arc and breaks it. 500KV AC substation circuit breakers do the same. Keep researching CJ. Im with you all the way and I haven't had to pick up a text book for a refresher yet. And yes, the Power station controllers vary the DC excitation on the ROTOR field to export import VARS to keep pf at unity. I don't know about a capacitor being a little square box but the ones we installed looked like a small version of a renewable battery farm. And Ill beat you to it , the capacitors are delta connected and bussed onto the grid BEFORE the LV HV transformation. Anyhow Im happy your interested but we are needing to concentrate on Lynas a little more.