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Research on Dynamic Modeling of KF Algorithm for Detecting Distorted AC Signal

Author

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  • Haoyao Nie

    (School of Economics and Management, Nanchang University, Nanchang 330031, China
    I.H. Asper School of Business, University of Manitoba, Winnipeg, MB R3T 5V4, Canada)

  • Xiaohua Nie

    (Department of Energy and Electrical Engineering, Nanchang University, Nanchang 330031, China)

Abstract

Kalman filter (KF) is often based on two models, which are phase angle vector (PAV) model and orthogonal vector (OV) model, in the application of distorted grid AC signal detection. However, these two models lack rigorous and detailed derivation from the principle of dynamic modeling. This paper presents a phase angle vector dynamic (PAVD) model and an orthogonal vector dynamic (OVD) model, which are combined with Kalman filter for detecting distorted grid AC signal. They reveal that the state noise covariance of the dynamic model−based KF is related to the sampling cycle, and overcome the defect of more detecting error for conventional model−based KF. Experiment and evaluation results show that the proposed KF algorithms are reasonable and effective. Therefore, this paper contributes a guiding significance for the application of KF algorithm in harmonic detection.

Suggested Citation

  • Haoyao Nie & Xiaohua Nie, 2021. "Research on Dynamic Modeling of KF Algorithm for Detecting Distorted AC Signal," Energies, MDPI, vol. 14(23), pages 1-15, December.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:23:p:8175-:d:695971
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