# Quantify Grid Stiffness

Being the stiffness of the grid its capability of maintaining the voltage constant despite small variations on load. Whereas, a weak grid would be easily affected by load variation and the voltage would change.

So here it comes my question, how do you quantify how stiff a grid? Is there any formula to calculate this?

• 1) Measure, or simulate. 2) As a simulation is essentially the same as an approximate formula, you could say yes. – Brian Drummond Dec 31 '19 at 13:51