A modeling approach for AC/DC distribution systems based on average dynamic phasor method
In order to achieve high-precision stability evaluation and time-domain simulation of AC/DC distribution systems, and improve the analysis efficiency of complex systems, an average dynamic phasor modeling method of AC/DC distribution systems was proposed with considering the current reconstruction o...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722000117 |
| _version_ | 1797902057094512640 |
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| author | Long Cheng Bowen Li Guoqing Li Zhenhao Wang |
| author_facet | Long Cheng Bowen Li Guoqing Li Zhenhao Wang |
| author_sort | Long Cheng |
| collection | DOAJ |
| description | In order to achieve high-precision stability evaluation and time-domain simulation of AC/DC distribution systems, and improve the analysis efficiency of complex systems, an average dynamic phasor modeling method of AC/DC distribution systems was proposed with considering the current reconstruction of dual-active bridge (DAB) high frequency transformer and the error correction of phase shifting duty cycle. Based on the average dynamic phasor model of voltage source converters (VSCs) and DABs established, the equivalent phase shift duty cycle of DAB was used as a modified algebraic variable to reduce the deviation caused by ignoring high-order dynamic phasors in modeling process and Fourier series are used to reconstruct the winding current of the high frequency transformer, respectively, to realize the accurate characterization of the DC and AC variables in average dynamic phasor models. Then an expandable global model of AC/DC distribution systems has been established by introducing the distribution line equations. Finally, according to the time-domain simulation based on MATLAB/Simulink software, the influence of model stability when the operating frequency and the leakage inductance of high frequency transformer changes was analyzed, and the correctness and accuracy of the proposed average dynamic phasor model was verified under the two scenarios of load mutation and disconnection fault. |
| first_indexed | 2024-04-10T09:11:46Z |
| format | Article |
| id | doaj.art-1c6336c3e4774888a24539301cc9eb53 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-10T09:11:46Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-1c6336c3e4774888a24539301cc9eb532023-02-21T05:10:07ZengElsevierEnergy Reports2352-48472022-11-01819211934A modeling approach for AC/DC distribution systems based on average dynamic phasor methodLong Cheng0Bowen Li1Guoqing Li2Zhenhao Wang3Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education (Northeast Electric Power University), Jilin 132012, China; Corresponding author.Shenyang Power Supply Company, State Grid Liaoning Electric Power Co., Ltd., Shenyang 110811, ChinaKey Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education (Northeast Electric Power University), Jilin 132012, ChinaKey Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education (Northeast Electric Power University), Jilin 132012, ChinaIn order to achieve high-precision stability evaluation and time-domain simulation of AC/DC distribution systems, and improve the analysis efficiency of complex systems, an average dynamic phasor modeling method of AC/DC distribution systems was proposed with considering the current reconstruction of dual-active bridge (DAB) high frequency transformer and the error correction of phase shifting duty cycle. Based on the average dynamic phasor model of voltage source converters (VSCs) and DABs established, the equivalent phase shift duty cycle of DAB was used as a modified algebraic variable to reduce the deviation caused by ignoring high-order dynamic phasors in modeling process and Fourier series are used to reconstruct the winding current of the high frequency transformer, respectively, to realize the accurate characterization of the DC and AC variables in average dynamic phasor models. Then an expandable global model of AC/DC distribution systems has been established by introducing the distribution line equations. Finally, according to the time-domain simulation based on MATLAB/Simulink software, the influence of model stability when the operating frequency and the leakage inductance of high frequency transformer changes was analyzed, and the correctness and accuracy of the proposed average dynamic phasor model was verified under the two scenarios of load mutation and disconnection fault.http://www.sciencedirect.com/science/article/pii/S2352484722000117AC/DC distribution systemAverage dynamic phasorVoltage-source converterDual-active bridgeCurrent reconstructionSingle phase shift modulation |
| spellingShingle | Long Cheng Bowen Li Guoqing Li Zhenhao Wang A modeling approach for AC/DC distribution systems based on average dynamic phasor method Energy Reports AC/DC distribution system Average dynamic phasor Voltage-source converter Dual-active bridge Current reconstruction Single phase shift modulation |
| title | A modeling approach for AC/DC distribution systems based on average dynamic phasor method |
| title_full | A modeling approach for AC/DC distribution systems based on average dynamic phasor method |
| title_fullStr | A modeling approach for AC/DC distribution systems based on average dynamic phasor method |
| title_full_unstemmed | A modeling approach for AC/DC distribution systems based on average dynamic phasor method |
| title_short | A modeling approach for AC/DC distribution systems based on average dynamic phasor method |
| title_sort | modeling approach for ac dc distribution systems based on average dynamic phasor method |
| topic | AC/DC distribution system Average dynamic phasor Voltage-source converter Dual-active bridge Current reconstruction Single phase shift modulation |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722000117 |
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