Integrated Control and Protection Architecture for Islanded PV-Battery DC Microgrids: Design, Analysis and Experimental Verification
Direct current (dc) microgrids have gained significant interest in research due to dc generation/storage technologies—such as photovoltaics (PV) and batteries—increasing performance and reducing in cost. However, proper protection and control systems are critical in order to make dc microgrids feasi...
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doaj-0d03675b747040399d97447dc1d45d852020-12-11T00:04:04ZengMDPI AGApplied Sciences2076-34172020-12-01108847884710.3390/app10248847Integrated Control and Protection Architecture for Islanded PV-Battery DC Microgrids: Design, Analysis and Experimental VerificationAli Abdali0Kazem Mazlumi1Josep M. Guerrero2Department of Electrical Engineering, Faculty of Engineering, University of Zanjan, Zanjan 45371-38791, IranDepartment of Electrical Engineering, Faculty of Engineering, University of Zanjan, Zanjan 45371-38791, IranCROM Center for Research on Microgrids, Department of Energy Technology, Aalborg University, 9220 Aalborg, DenmarkDirect current (dc) microgrids have gained significant interest in research due to dc generation/storage technologies—such as photovoltaics (PV) and batteries—increasing performance and reducing in cost. However, proper protection and control systems are critical in order to make dc microgrids feasible. This paper aims to propose a novel integrated control and protection scheme by using the state-dependent Riccati equation (SDRE) method for PV-battery based islanded dc microgrids. The dc microgrid under study consists of photovoltaic (PV) generation, a battery energy storage system (BESS), a capacitor bank and a dc load. The aims of this study are fast fault detection and voltage control of the dc load bus. To do so, the SDRE observer-controller—a nonlinear mathematical model—is employed to model the operation of the dc microgrid. Simulation results show that the proposed SDRE method is effective for fault detection and robust against external disturbances, resulting in it being capable of controlling the dc load bus voltage during disturbances. Finally, the dc microgrid and its proposed protection scheme are implemented in an experimental testbed prototype to verify the fault detection algorithm feasibility. The experimental results indicate that the SDRE scheme can effectively detect faults in a few milliseconds.https://www.mdpi.com/2076-3417/10/24/8847integrated control and protection architecturefault detectionstate-dependent Riccati equation (SDRE)dc microgridsPV systembattery energy storage system (BESS) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ali Abdali Kazem Mazlumi Josep M. Guerrero |
spellingShingle |
Ali Abdali Kazem Mazlumi Josep M. Guerrero Integrated Control and Protection Architecture for Islanded PV-Battery DC Microgrids: Design, Analysis and Experimental Verification Applied Sciences integrated control and protection architecture fault detection state-dependent Riccati equation (SDRE) dc microgrids PV system battery energy storage system (BESS) |
author_facet |
Ali Abdali Kazem Mazlumi Josep M. Guerrero |
author_sort |
Ali Abdali |
title |
Integrated Control and Protection Architecture for Islanded PV-Battery DC Microgrids: Design, Analysis and Experimental Verification |
title_short |
Integrated Control and Protection Architecture for Islanded PV-Battery DC Microgrids: Design, Analysis and Experimental Verification |
title_full |
Integrated Control and Protection Architecture for Islanded PV-Battery DC Microgrids: Design, Analysis and Experimental Verification |
title_fullStr |
Integrated Control and Protection Architecture for Islanded PV-Battery DC Microgrids: Design, Analysis and Experimental Verification |
title_full_unstemmed |
Integrated Control and Protection Architecture for Islanded PV-Battery DC Microgrids: Design, Analysis and Experimental Verification |
title_sort |
integrated control and protection architecture for islanded pv-battery dc microgrids: design, analysis and experimental verification |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2020-12-01 |
description |
Direct current (dc) microgrids have gained significant interest in research due to dc generation/storage technologies—such as photovoltaics (PV) and batteries—increasing performance and reducing in cost. However, proper protection and control systems are critical in order to make dc microgrids feasible. This paper aims to propose a novel integrated control and protection scheme by using the state-dependent Riccati equation (SDRE) method for PV-battery based islanded dc microgrids. The dc microgrid under study consists of photovoltaic (PV) generation, a battery energy storage system (BESS), a capacitor bank and a dc load. The aims of this study are fast fault detection and voltage control of the dc load bus. To do so, the SDRE observer-controller—a nonlinear mathematical model—is employed to model the operation of the dc microgrid. Simulation results show that the proposed SDRE method is effective for fault detection and robust against external disturbances, resulting in it being capable of controlling the dc load bus voltage during disturbances. Finally, the dc microgrid and its proposed protection scheme are implemented in an experimental testbed prototype to verify the fault detection algorithm feasibility. The experimental results indicate that the SDRE scheme can effectively detect faults in a few milliseconds. |
topic |
integrated control and protection architecture fault detection state-dependent Riccati equation (SDRE) dc microgrids PV system battery energy storage system (BESS) |
url |
https://www.mdpi.com/2076-3417/10/24/8847 |
work_keys_str_mv |
AT aliabdali integratedcontrolandprotectionarchitectureforislandedpvbatterydcmicrogridsdesignanalysisandexperimentalverification AT kazemmazlumi integratedcontrolandprotectionarchitectureforislandedpvbatterydcmicrogridsdesignanalysisandexperimentalverification AT josepmguerrero integratedcontrolandprotectionarchitectureforislandedpvbatterydcmicrogridsdesignanalysisandexperimentalverification |
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