ROBUST WIDE‐AREA FAULT VISIBILITY AND STRUCTURAL OBSERVABILITY IN POWER SYSTEMS WITH SYNCHRONIZED MEASUREMENT UNITS

This chapter presents innovative research subsuming robust state estimation and optimal sensor deployment with the objective to achieve system‐wide fault visibility and structural observability in modern power systems equipped with wide‐area measurement systems (WAMSs). First, a robust, observability‐driven approach to fault location relying on both the principles of traveling waves on transmission systems and the use of synchronized measurements will be reviewed and illustrated with a unified case study. Then, optimal placement strategies that are developed to preserve system observability in the presence of channel capacities of phasor measurement units (PMUs), zero‐injection buses, and a single PMU loss will be accompanied by various test system examples and results.