Patent ID: 8788244

Claim:
A method for assessing voltage security in a power system having a number (i) of buses, comprising: capturing a change in bus voltage and a change in line reactive power for at least some of the buses in the power system; for at least one of the i number of buses, calculating a voltage assessment index (Γ) for as follows: Γ i = ∑ j ⁢ Δ ⁢ ⁢ Q ij Δ ⁢ ⁢ V i where ΔV i is the change in bus voltage and ΔQ ij is the change in line reactive power from a connection j over a predetermined period of time; and assessing a current voltage security status of the at least one of the i number of buses and/or the power system based on the calculated voltage assessment index (Γ i ).