Influence of geomagnetic disturbances in the polar regions on the reactive power transmission mode on the airline

Analytical expressions are obtained for determining reactive power at the beginning and at the end of an intersystem overhead line, taking into account the parameters of the magnetization branches of power transformers, which allow one to take into account the intensity of the influence of geomagnetic disturbances on power transmission modes. It is shown that an increase in the intensity of geo-induced currents can completely disrupt the transit of reactive power due to the multiple increase in the magnetization power of power transformers as a result of one-sided saturation of magnetic systems. A numerical example is given illustrating the possibility of terminating the transit of reactive power with sufficiently intense geomagnetic disturbances.