Review of Methods for Power Systems State Estimation and Data Validation Based on Synchrophasor Measurements

Abstract

In recent years, the technology of synchrophasor measurements has been actively introduced in power systems around the world. When managing the power system and predicting its modes, the important tasks are to check the reliability of data and estimate the state of the power system. The introduction of synchrophasor measurements, on the one hand, makes it possible to solve the problem of state estimation more efficiently in comparison with traditional telemetry. On the other hand, previously used data validation technologies are not suitable for their use with synchrophasor measurements due to the new properties of these measurements. It should also be borne in mind that these two tasks are interrelated. This study provides an overview of recently proposed power system state estimation and data validation methods based on synchrophasor measurements.