Determining a value of a characteristic of an electric power grid

Abstract

A method for determining a first value of a characteristic of an electric power grid as observed at a first location of the electric power grid is disclosed. The method comprises obtaining a plurality of second values. Each second value is indicative of a relationship between a difference in measured voltage of the electric power grid at the first location before and after a respective power change and a difference in measured current of the electric power grid at the first location before and after the respective power change. Each power change causes an electric power flow in the electric power grid at the first location with a respective different ratio of reactive to active power. The method comprises determining, based on the plurality of second values, a third value indicative of an extremum of the relationship, and determining the first value based on the third value.

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