PMU-based multi-area state estimation with low data exchange

The paper proposes a novel multi-area state estimator based on wide area measurements where only boundary buses are considered in the coordination level. The power injection measurements are not used during the coordination level reducing the number of states and therefore size of the problem. Instead, a set of pseudo-measurements are included whenever a power injection measurement is available in boundary buses. The proposed method was validated using the IEEE 300 bus system split into 7 different areas.