204 citations · 267 across the 4 of their papers we have counts for
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cs.IT2014
Power System Dynamic State Estimation by Unscented Kalman Filter with Guaranteed Positive Semidefinite State Covariance
Junjian Qi, Kai Sun
In this paper an unscented Kalman filter with guaranteed positive semidefinite state covariance is proposed by calculating the nearest symmetric positive definite matrix in Frobeni…
math.OC2014★ 204 cited
Optimal PMU Placement for Power System Dynamic State Estimation by Using Empirical Observability Gramian
Junjian Qi, Kai Sun, Wei Kang
In this paper the empirical observability Gramian calculated around the operating region of a power system is used to quantify the degree of observability of the system states unde…