Improved Three-Phase AFD Islanding Detection Based on Digital Control and Non-Detection Zone Elimination
This paper proposes an improved active frequency drift (AFD) islanding detection method of a three-phase inverter. Different than the existing single-phase AFD method, in the three-phase system, the disturbance is added to the phase angle, which takes part in coordinate transformation calculations....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-09-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/9/2421 |
| _version_ | 1811213498928070656 |
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| author | Xinxin Zheng Rui Zhang Xi Chen Nong Sun |
| author_facet | Xinxin Zheng Rui Zhang Xi Chen Nong Sun |
| author_sort | Xinxin Zheng |
| collection | DOAJ |
| description | This paper proposes an improved active frequency drift (AFD) islanding detection method of a three-phase inverter. Different than the existing single-phase AFD method, in the three-phase system, the disturbance is added to the phase angle, which takes part in coordinate transformation calculations. Thus, the frequency drift of the three-phase reference current can be realized by the disturbance of the phase angle. It is unnecessary to add frequency drift to each phase respectively with the proposed method, which can simplify the control system. Furthermore, the non-detection zone can be eliminated by updating certain parameters; therefore, the detection method is sensitive. In this paper, the application of the proposed method in a digital control system is discussed in detail. The non-detection zone is analyzed, and an elimination method is proposed. Finally, the simulation and experimental results are given to verify the theoretical analysis. |
| first_indexed | 2024-04-12T05:46:20Z |
| format | Article |
| id | doaj.art-678cd7a248114ff0a3f97560dfd2d915 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-12T05:46:20Z |
| publishDate | 2018-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-678cd7a248114ff0a3f97560dfd2d9152022-12-22T03:45:26ZengMDPI AGEnergies1996-10732018-09-01119242110.3390/en11092421en11092421Improved Three-Phase AFD Islanding Detection Based on Digital Control and Non-Detection Zone EliminationXinxin Zheng0Rui Zhang1Xi Chen2Nong Sun3Automobile Engineering Technology Research Institution, Hefei University of Technology, Hefei 230009, ChinaAutomobile Engineering Technology Research Institution, Hefei University of Technology, Hefei 230009, ChinaState Grid Hefei Electric Power Supply Company, Hefei 230001, ChinaState Grid Hefei Electric Power Supply Company, Hefei 230001, ChinaThis paper proposes an improved active frequency drift (AFD) islanding detection method of a three-phase inverter. Different than the existing single-phase AFD method, in the three-phase system, the disturbance is added to the phase angle, which takes part in coordinate transformation calculations. Thus, the frequency drift of the three-phase reference current can be realized by the disturbance of the phase angle. It is unnecessary to add frequency drift to each phase respectively with the proposed method, which can simplify the control system. Furthermore, the non-detection zone can be eliminated by updating certain parameters; therefore, the detection method is sensitive. In this paper, the application of the proposed method in a digital control system is discussed in detail. The non-detection zone is analyzed, and an elimination method is proposed. Finally, the simulation and experimental results are given to verify the theoretical analysis.http://www.mdpi.com/1996-1073/11/9/2421three-phase inverterislanding detectionnon-detection zonezero-crossing correctionactive frequency drift |
| spellingShingle | Xinxin Zheng Rui Zhang Xi Chen Nong Sun Improved Three-Phase AFD Islanding Detection Based on Digital Control and Non-Detection Zone Elimination Energies three-phase inverter islanding detection non-detection zone zero-crossing correction active frequency drift |
| title | Improved Three-Phase AFD Islanding Detection Based on Digital Control and Non-Detection Zone Elimination |
| title_full | Improved Three-Phase AFD Islanding Detection Based on Digital Control and Non-Detection Zone Elimination |
| title_fullStr | Improved Three-Phase AFD Islanding Detection Based on Digital Control and Non-Detection Zone Elimination |
| title_full_unstemmed | Improved Three-Phase AFD Islanding Detection Based on Digital Control and Non-Detection Zone Elimination |
| title_short | Improved Three-Phase AFD Islanding Detection Based on Digital Control and Non-Detection Zone Elimination |
| title_sort | improved three phase afd islanding detection based on digital control and non detection zone elimination |
| topic | three-phase inverter islanding detection non-detection zone zero-crossing correction active frequency drift |
| url | http://www.mdpi.com/1996-1073/11/9/2421 |
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