State estimation in the presence of synchronized measurement
State estimation plays a critical role for the wide-area monitoring system at the control center. The power system network, geographically spread over a large area, is monitored and controlled using the measurements collected at regular intervals. A number of application functions are performed based on the estimated states of the system to ensure secure and reliable operation of the power system. The amplitude and angle of the voltage phasor at each bus constitute the states of the system. The measurements are collected from the field and telemetered to the control center, where they are processed, typically using standard-weighted least squares static state estimator, to estimate the states of the system.