The Possiblity of Using Phasor Measurement Units for the Distance Determination to the Disturbance Point

One of the issues of current importance is using phasor measurements unit (PMU) for the Wide Area Monitoring, Protection and Control System (WAMPAC). However, there is no clear understanding of the possibility of implementing relay protection functions based on these devices when filtering electrical quantities signals. Since the technology of synchronized vector measurements is relatively young in the electric power industry, various studies are currently being carried out on the applicability of the PMU functions in relay protection. Moreover, new calculation algorithms implemented in these devices are proposed. There is an ever-increasing introduction of PMU at electric power facilities as part of the WAMS complex for collecting and analyzing information both online and for subsequent analysis in order to monitor network parameters and equipment. The problems of determining the type of disturbance from the measurements obtained by PMU installed at various points of the power grid are considered worldwide. It is advisable to consider the possibility of estimating the distance to the point of application of the disturbance.