State-Dependent Riccati Equation with both Observer and Controller Capability to Fault Diagnosis of the Micro–Grids

Yang  Wang; Xianfeng  Cheng; Trabert  Andreas

doi:10.6180/jase.202412_27(12).0003

State-Dependent Riccati Equation with both Observer and Controller Capability to Fault Diagnosis of the Micro–Grids

Yang Wang¹This email address is being protected from spambots. You need JavaScript enabled to view it., Xianfeng Cheng², and Trabert Andreas³

¹Huainan Union University, Huainan, Anhui, 232038, China

²Suzhou Tongjin Precision Industry Joint-stock Co.,Ltd., Suzhou, Jiangsu , 215129 , China

³Trabert Andreas, Isel Germany AG, Dermbach, 36466, Germany

Received: March 1, 2023
Accepted: August 30, 2023
Publication Date: February 20, 2024

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202412_27(12).0003

This study with the aim of monitoring the solar cell output voltages, the battery, the capacitor bank and the DC busbar, and detecting possible faults in a well-timed mode, the optimal optimizer-controller for a small DC network separated from the network is developed through utilization of the State-Dependent Riccati Equation (SDRE) method. In the development of SDRE observer–controller, modeling the diverse operational dynamic behavior of the microgrid is carried out through a nonlinear model. Uncertainty in system parameters and measurement noise are not ignored in the evaluation of the studied microgrid. The capability of the applied method in distinguishing faults in a well-timed mode is confirmed through the outcomes of the simulations. To elaborate, the disturbance is not recognized as a fault which corroborates that, even in this condition, the progressive controller is efficient and resistant.

Keywords: Micro grid; State-Dependent Riccati Equation; Fault Detection; Observer; DC network

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