Space weather impact estimate on synchronization for wams

The equipment based on the global navigation system timestamp is applied to synchronize the measurement moment in various power buses to define the cur- rent and voltage phasors at the power system control. There is a number of the natural reasons which reduce synchronization accuracy. These are irregularities in an ionosphere layer due to solar radiation, geomagnetic storms, mutual disposition of the navigation signal satellites and receivers, the final equipment accuracy in receiving and signal processing. In this paper the ways of such moments and the errors caused by various reasons of the nature on used equipment are considered, some estimates of space weather impact on the measurement moment accuracy are given. The conclusion about limited use of such equipment in power system control is made.