Circulating current suppression strategy for VSG parallel system with island microgrid
In low-voltage microgrid, the space span between distributed generators is large, and the difference of line impedance has a great impact on the current sharing effect of inverter parallel system controlled by traditional virtual synchronous generator (VSG). The relationship between circulating curr...
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| Format: | Article |
| Language: | zho |
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Harbin Jinhe Electrical Measurement & Instrumentation Magazine Publishing Co., Ltd.
2025-04-01
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| Series: | Diance yu yibiao |
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| Online Access: | http://www.emijournal.net/dcyyben/ch/reader/create_pdf.aspx?file_no=20220706001&flag=1&journal_id=dcyyben&year_id=2025 |
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| _version_ | 1850194117440569344 |
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| author | NI Liang LIU Guiying SU Qiankun LI Zhixuan LUO Junjie |
| author_facet | NI Liang LIU Guiying SU Qiankun LI Zhixuan LUO Junjie |
| author_sort | NI Liang |
| collection | DOAJ |
| description | In low-voltage microgrid, the space span between distributed generators is large, and the difference of line impedance has a great impact on the current sharing effect of inverter parallel system controlled by traditional virtual synchronous generator (VSG). The relationship between circulating current and power distribution and the influence of line impedance on power distribution are analyzed. On this basis, a circulating current suppression strategy of inverter parallel system based on virtual synchronous generator is proposed. In this strategy, the transmission power is introduced into the power control loop, and the bus voltage negative feedback and integral link are introduced into the reactive power voltage loop to realize the current sharing control under the condition of line impedance mismatch in the steady state. Then, by setting parameters and introducing virtual impedance, the circulation of dynamic process is reduced, and the system obtains good dynamic characteristics. Finally, MATLAB/Simulink simulation platform is used to verify the effectiveness of the proposed strategy. |
| format | Article |
| id | doaj-art-5bfabdce6ab849ef805b37ff01d52c27 |
| institution | OA Journals |
| issn | 1001-1390 |
| language | zho |
| publishDate | 2025-04-01 |
| publisher | Harbin Jinhe Electrical Measurement & Instrumentation Magazine Publishing Co., Ltd. |
| record_format | Article |
| series | Diance yu yibiao |
| spelling | doaj-art-5bfabdce6ab849ef805b37ff01d52c272025-08-20T02:14:06ZzhoHarbin Jinhe Electrical Measurement & Instrumentation Magazine Publishing Co., Ltd.Diance yu yibiao1001-13902025-04-0162412212910.19753/j.issn1001-1390.2025.04.0151001-1390(2025)04-0122-08Circulating current suppression strategy for VSG parallel system with island microgridNI Liang0LIU Guiying1SU Qiankun2LI Zhixuan3LUO Junjie4School of Electrical & Information Engineering, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Electrical & Information Engineering, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Electrical & Information Engineering, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Electrical & Information Engineering, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Electrical & Information Engineering, Changsha University of Science & Technology, Changsha 410114, ChinaIn low-voltage microgrid, the space span between distributed generators is large, and the difference of line impedance has a great impact on the current sharing effect of inverter parallel system controlled by traditional virtual synchronous generator (VSG). The relationship between circulating current and power distribution and the influence of line impedance on power distribution are analyzed. On this basis, a circulating current suppression strategy of inverter parallel system based on virtual synchronous generator is proposed. In this strategy, the transmission power is introduced into the power control loop, and the bus voltage negative feedback and integral link are introduced into the reactive power voltage loop to realize the current sharing control under the condition of line impedance mismatch in the steady state. Then, by setting parameters and introducing virtual impedance, the circulation of dynamic process is reduced, and the system obtains good dynamic characteristics. Finally, MATLAB/Simulink simulation platform is used to verify the effectiveness of the proposed strategy.http://www.emijournal.net/dcyyben/ch/reader/create_pdf.aspx?file_no=20220706001&flag=1&journal_id=dcyyben&year_id=2025distributed generatorvirtual synchronous generatorpower distributioncirculation current suppression |
| spellingShingle | NI Liang LIU Guiying SU Qiankun LI Zhixuan LUO Junjie Circulating current suppression strategy for VSG parallel system with island microgrid Diance yu yibiao distributed generator virtual synchronous generator power distribution circulation current suppression |
| title | Circulating current suppression strategy for VSG parallel system with island microgrid |
| title_full | Circulating current suppression strategy for VSG parallel system with island microgrid |
| title_fullStr | Circulating current suppression strategy for VSG parallel system with island microgrid |
| title_full_unstemmed | Circulating current suppression strategy for VSG parallel system with island microgrid |
| title_short | Circulating current suppression strategy for VSG parallel system with island microgrid |
| title_sort | circulating current suppression strategy for vsg parallel system with island microgrid |
| topic | distributed generator virtual synchronous generator power distribution circulation current suppression |
| url | http://www.emijournal.net/dcyyben/ch/reader/create_pdf.aspx?file_no=20220706001&flag=1&journal_id=dcyyben&year_id=2025 |
| work_keys_str_mv | AT niliang circulatingcurrentsuppressionstrategyforvsgparallelsystemwithislandmicrogrid AT liuguiying circulatingcurrentsuppressionstrategyforvsgparallelsystemwithislandmicrogrid AT suqiankun circulatingcurrentsuppressionstrategyforvsgparallelsystemwithislandmicrogrid AT lizhixuan circulatingcurrentsuppressionstrategyforvsgparallelsystemwithislandmicrogrid AT luojunjie circulatingcurrentsuppressionstrategyforvsgparallelsystemwithislandmicrogrid |