A New Reactive-Power Sharing Scheme for Two Inverter-Based Distributed Generations with Unequal Line Impedances in Islanded Microgrids
This paper proposes a new reactive-power sharing scheme to reduce the circulating current when two inverter-based distributed generations (DGs) operate in parallel through unequal line impedances in an islanded microgrid. If the terminal voltages of the two DGs are not equal due to the unequal line...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/10/11/1800 |
| _version_ | 1828358842310721536 |
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| author | Jae-Hyuk Kim Yoon-Seok Lee Hyun-Jun Kim Byung-Moon Han |
| author_facet | Jae-Hyuk Kim Yoon-Seok Lee Hyun-Jun Kim Byung-Moon Han |
| author_sort | Jae-Hyuk Kim |
| collection | DOAJ |
| description | This paper proposes a new reactive-power sharing scheme to reduce the circulating current when two inverter-based distributed generations (DGs) operate in parallel through unequal line impedances in an islanded microgrid. If the terminal voltages of the two DGs are not equal due to the unequal line impedances, a circulating current due to reactive-power unbalance occurs, which increases system loss. The proposed droop control compensates the terminal voltage difference to reduce the circulating current by considering a feed-forward path of the line voltage drop. The feasibility of the proposed droop control was first verified through computer simulations, and then experiments with a hardware set-up in the lab. The experimental results were compared with the simulation results to confirm the feasibility of the proposed droop control. |
| first_indexed | 2024-04-14T03:33:14Z |
| format | Article |
| id | doaj.art-c44196292da74e4bba9d69500db43037 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-14T03:33:14Z |
| publishDate | 2017-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c44196292da74e4bba9d69500db430372022-12-22T02:14:52ZengMDPI AGEnergies1996-10732017-11-011011180010.3390/en10111800en10111800A New Reactive-Power Sharing Scheme for Two Inverter-Based Distributed Generations with Unequal Line Impedances in Islanded MicrogridsJae-Hyuk Kim0Yoon-Seok Lee1Hyun-Jun Kim2Byung-Moon Han3Department of Electrical Engineering, Myong-ji University, 116 Myongji-ro, Yongin-si, Gyeonggi-do 449-728, KoreaDepartment of Electrical Engineering, Myong-ji University, 116 Myongji-ro, Yongin-si, Gyeonggi-do 449-728, KoreaDepartment of Electrical Engineering, Myong-ji University, 116 Myongji-ro, Yongin-si, Gyeonggi-do 449-728, KoreaDepartment of Electrical Engineering, Myong-ji University, 116 Myongji-ro, Yongin-si, Gyeonggi-do 449-728, KoreaThis paper proposes a new reactive-power sharing scheme to reduce the circulating current when two inverter-based distributed generations (DGs) operate in parallel through unequal line impedances in an islanded microgrid. If the terminal voltages of the two DGs are not equal due to the unequal line impedances, a circulating current due to reactive-power unbalance occurs, which increases system loss. The proposed droop control compensates the terminal voltage difference to reduce the circulating current by considering a feed-forward path of the line voltage drop. The feasibility of the proposed droop control was first verified through computer simulations, and then experiments with a hardware set-up in the lab. The experimental results were compared with the simulation results to confirm the feasibility of the proposed droop control.https://www.mdpi.com/1996-1073/10/11/1800distributed generation (DG)droop controlreactive power sharingcirculating currentfeed-forward path |
| spellingShingle | Jae-Hyuk Kim Yoon-Seok Lee Hyun-Jun Kim Byung-Moon Han A New Reactive-Power Sharing Scheme for Two Inverter-Based Distributed Generations with Unequal Line Impedances in Islanded Microgrids Energies distributed generation (DG) droop control reactive power sharing circulating current feed-forward path |
| title | A New Reactive-Power Sharing Scheme for Two Inverter-Based Distributed Generations with Unequal Line Impedances in Islanded Microgrids |
| title_full | A New Reactive-Power Sharing Scheme for Two Inverter-Based Distributed Generations with Unequal Line Impedances in Islanded Microgrids |
| title_fullStr | A New Reactive-Power Sharing Scheme for Two Inverter-Based Distributed Generations with Unequal Line Impedances in Islanded Microgrids |
| title_full_unstemmed | A New Reactive-Power Sharing Scheme for Two Inverter-Based Distributed Generations with Unequal Line Impedances in Islanded Microgrids |
| title_short | A New Reactive-Power Sharing Scheme for Two Inverter-Based Distributed Generations with Unequal Line Impedances in Islanded Microgrids |
| title_sort | new reactive power sharing scheme for two inverter based distributed generations with unequal line impedances in islanded microgrids |
| topic | distributed generation (DG) droop control reactive power sharing circulating current feed-forward path |
| url | https://www.mdpi.com/1996-1073/10/11/1800 |
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