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Chen, Tengpeng; Luo, Hongxuan; Gooi, Hoay Beng; Foo, Eddy Y.S.; Sun, Lu; Zeng, Nianyin
Expert systems with applications, 10/2024, Letnik: 251Journal Article
The accurate estimation of power system states is crucial for effective monitoring and control. However, the performance of conventional state estimators, which assume Gaussian measurement noise and do not account for denial-of-service attacks, can deteriorate significantly in real power systems. To address these issues, this paper proposes a novel robust state estimation method based on the quadratic function (QF) and the generalized correntropy loss function (GCL). The proposed QF-GCL state estimation method can effectively deal with non-Gaussian measurement noise and denial-of-service attacks. To enhance the computational efficiency, an influence function based solving method is developed. To determine the optimal parameters for the proposed QF-GCL state estimation method, a new state estimation error covariance equation is further derived. Simulations are performed on the IEEE 30-bus, 118-bus and 300-bus systems, to demonstrate the accurate and robust performance of the proposed QF-GCL robust state estimation method. •A QF-GCL method is proposed.•An IF based solving method is given.•An error covariance is derived.
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