State Estimation in the Power System with Phasor Measurement Units and Malicious Attacks through Injection of Inaccurate Measurements and Its Detection
This manuscript explores the significance of state estimation methods in electric power systems, with a particular focus on the role of Phasor Measurement Units. In the manuscript is presented the basic principles and advantages of state estimators in the absence of PMU measurements, followed by an analysis of how PMU measurements significantly enhance the accuracy of state estimations. Through a detailed review, we highlight the key characteristics of PMUs and how their synchronized data contributes to improved state estimation quality. The paper investigates the security aspects of state estimation, specifically focusing on malicious attacks through the injection of false measurements (FDIA). Using a concrete example, it is demonstrated how an FDIA attack can significantly impact the accuracy of state estimations by introducing inaccurate data into the system. The manuscript also considers a strategy for detecting such attacks through residual analysis