Abstract
This work describes the estimation of system states for WSCC 3-Generator 9-Bus system connected with SVC (shunt FACTS device). Bus voltage magnitudes and voltage phase angles of this test system are estimated using Weighted Least Square (WLS) and Extended Kalman Filter (EKF) methods of dynamic state estimation. Holt's two-parameter linear exponential smoothing method is utilised for model parameter identification required in EKF implementation. Performance of both estimation methods are compared under two disturbance conditions, vis-a-vis sudden load change and three-phase fault.
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