Coherence verification of transmission line parameters with PMUs measurements at its ends

This paper uses State Estimation (SE) methods to validate transmission line parameters with Phasor Measurement Units (PMUs) at its ends. This exercise was needed prior to the commissioning of a new network voltage control strategy. Equations for the specific Hydro-Quebec´s measurements scheme are developed. Good behaviour of the algorithm is proven with simulations. The method is applied on a real line with real measurements. A bad data measurement is identified and eliminated. The system under study is then declared coherent.