I want to measure the current grid voltage to synchronize a dc power supply with the grid using an inverter. Now I'm particularly interested in finding noise and harmonic information about the grid voltage.
So my plan is to use a transformer to to step the grid voltage down on two of the phases and use resistor dividers to get the voltage in an appropriate range for the ADCs of my dsp. Is this the best way to measure grid voltage for synchronization purposes(I'm particularly interested in unbalanced conditions).
Further more will i lose harmonic and noise information by using this method(through the inductance of the transformer)?
It's a bit of a repeat of this question though am interested if there are any other factors I need to take into account for voltage measurements for the purpose of grid synchronization. (If not i guess this question is kind of redundant)