Accurate Active and Reactive Power Sharing Based on a Modified Droop Control Method for Islanded Microgrids
When multiple paralleled distributed generation (DG) units operate in an islanded microgrid, accurate power sharing of each DG unit cannot be achieved with a conventional droop control strategy due to mismatched feeder impedance. In this paper, a small AC signal (SACS)-injection-based modified droop...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/14/6269 |
| _version_ | 1797587601998217216 |
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| author | Zhi Zhang Sheng Gao Caomao Zhong Zhaoyun Zhang |
| author_facet | Zhi Zhang Sheng Gao Caomao Zhong Zhaoyun Zhang |
| author_sort | Zhi Zhang |
| collection | DOAJ |
| description | When multiple paralleled distributed generation (DG) units operate in an islanded microgrid, accurate power sharing of each DG unit cannot be achieved with a conventional droop control strategy due to mismatched feeder impedance. In this paper, a small AC signal (SACS)-injection-based modified droop control method is presented for accurate active and reactive power sharing among DG units. The proposed control method adjusts the voltage amplitude of each DG unit by injecting small AC signals to form a reactive power control loop. This strategy does not need communication links or to specifically obtain the physical parameter of the feeder impedance and only requires the local information. Moreover, the parameter design procedure and stability analysis are given full consideration. Finally, simulation and experimental results verify the effectiveness of the proposed control scheme, and accurate active and reactive power sharing can be achieved. |
| first_indexed | 2024-03-11T00:41:15Z |
| format | Article |
| id | doaj.art-a292e024c1564888858bb2a66bce09fa |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T00:41:15Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-a292e024c1564888858bb2a66bce09fa2023-11-18T21:15:21ZengMDPI AGSensors1424-82202023-07-012314626910.3390/s23146269Accurate Active and Reactive Power Sharing Based on a Modified Droop Control Method for Islanded MicrogridsZhi Zhang0Sheng Gao1Caomao Zhong2Zhaoyun Zhang3Department of Electrical Engineering and Automation, Dongguan University of Technology, Dongguan 523808, ChinaDepartment of Electrical Engineering and Automation, Dongguan University of Technology, Dongguan 523808, ChinaSchool of Automation, Guangdong University of Technology, Guangzhou 510006, ChinaDepartment of Electrical Engineering and Automation, Dongguan University of Technology, Dongguan 523808, ChinaWhen multiple paralleled distributed generation (DG) units operate in an islanded microgrid, accurate power sharing of each DG unit cannot be achieved with a conventional droop control strategy due to mismatched feeder impedance. In this paper, a small AC signal (SACS)-injection-based modified droop control method is presented for accurate active and reactive power sharing among DG units. The proposed control method adjusts the voltage amplitude of each DG unit by injecting small AC signals to form a reactive power control loop. This strategy does not need communication links or to specifically obtain the physical parameter of the feeder impedance and only requires the local information. Moreover, the parameter design procedure and stability analysis are given full consideration. Finally, simulation and experimental results verify the effectiveness of the proposed control scheme, and accurate active and reactive power sharing can be achieved.https://www.mdpi.com/1424-8220/23/14/6269modified droop controlpower sharingdistributed generation unitislanded microgridsignal injection |
| spellingShingle | Zhi Zhang Sheng Gao Caomao Zhong Zhaoyun Zhang Accurate Active and Reactive Power Sharing Based on a Modified Droop Control Method for Islanded Microgrids Sensors modified droop control power sharing distributed generation unit islanded microgrid signal injection |
| title | Accurate Active and Reactive Power Sharing Based on a Modified Droop Control Method for Islanded Microgrids |
| title_full | Accurate Active and Reactive Power Sharing Based on a Modified Droop Control Method for Islanded Microgrids |
| title_fullStr | Accurate Active and Reactive Power Sharing Based on a Modified Droop Control Method for Islanded Microgrids |
| title_full_unstemmed | Accurate Active and Reactive Power Sharing Based on a Modified Droop Control Method for Islanded Microgrids |
| title_short | Accurate Active and Reactive Power Sharing Based on a Modified Droop Control Method for Islanded Microgrids |
| title_sort | accurate active and reactive power sharing based on a modified droop control method for islanded microgrids |
| topic | modified droop control power sharing distributed generation unit islanded microgrid signal injection |
| url | https://www.mdpi.com/1424-8220/23/14/6269 |
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