Analysis for low frequency oscillation on the DC side of AC/DC distribution network based on PET control characteristics
With the development of new energy, energy storage, and flexible DC technology, AC/DC hybrid distribution networks have gradually become an important development direction for future distribution networks. The access of a large number of power electronic devices has brought dynamic problems such as...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Electric Power Engineering Technology
2023-05-01
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| Series: | 电力工程技术 |
| Subjects: | |
| Online Access: | https://www.epet-info.com/dlgcjsen/article/abstract/210317235 |
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| author | FAN Dongchen ZHANG Chenyu JIANG Yunlong LIU Wenkai YUAN Yubo YUAN Xiaoming |
| author_facet | FAN Dongchen ZHANG Chenyu JIANG Yunlong LIU Wenkai YUAN Yubo YUAN Xiaoming |
| author_sort | FAN Dongchen |
| collection | DOAJ |
| description | With the development of new energy, energy storage, and flexible DC technology, AC/DC hybrid distribution networks have gradually become an important development direction for future distribution networks. The access of a large number of power electronic devices has brought dynamic problems such as low frequency oscillations to the distribution network. In order to deeply study the low frequency oscillation problem on the DC side of AC/DC distribution networks, detailed modeling of key links is conducted such as H-bridge series and isolated bidirectional active bridge structures, three-phase inverters, and three-phase Buck converters in the main valve tower of power electronic transformer. Through time domain simulation, the 4 Hz low frequency oscillation phenomenon on the DC side of the AC/DC distribution network in the actual project is reproduced, and the correctness of the established mathematical model is verified. Based on the established mathematical model, qualitative analysis is conducted on key influencing factors such as power and controller parameters, and the final conclusions are as follows: power level and Buck link voltage loop control parameters affect system stability, the integral coefficient of the current loop in the Buck link affects the oscillation frequency. |
| first_indexed | 2024-03-13T09:31:19Z |
| format | Article |
| id | doaj.art-4ab126a7ab444cb485eccd1a966523f0 |
| institution | Directory Open Access Journal |
| issn | 2096-3203 |
| language | zho |
| last_indexed | 2024-03-13T09:31:19Z |
| publishDate | 2023-05-01 |
| publisher | Editorial Department of Electric Power Engineering Technology |
| record_format | Article |
| series | 电力工程技术 |
| spelling | doaj.art-4ab126a7ab444cb485eccd1a966523f02023-05-26T00:26:41ZzhoEditorial Department of Electric Power Engineering Technology电力工程技术2096-32032023-05-01423364310.12158/j.2096-3203.2023.03.005210317235Analysis for low frequency oscillation on the DC side of AC/DC distribution network based on PET control characteristicsFAN Dongchen0ZHANG Chenyu1JIANG Yunlong2LIU Wenkai3YUAN Yubo4YUAN Xiaoming5State Grid Jiangsu Electric Power Co., Ltd. Research Institute, Nanjing 211103, ChinaState Grid Jiangsu Electric Power Co., Ltd. Research Institute, Nanjing 211103, ChinaState Grid Jiangsu Electric Power Co., Ltd. Research Institute, Nanjing 211103, ChinaState Grid Zhejiang Electric Power Co., Ltd. Hangzhou Power Supply Company, Hangzhou 310016, ChinaState Grid Jiangsu Electric Power Co., Ltd. Research Institute, Nanjing 211103, ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology (Huazhong University of Science and Technology), Wuhan 430074, ChinaWith the development of new energy, energy storage, and flexible DC technology, AC/DC hybrid distribution networks have gradually become an important development direction for future distribution networks. The access of a large number of power electronic devices has brought dynamic problems such as low frequency oscillations to the distribution network. In order to deeply study the low frequency oscillation problem on the DC side of AC/DC distribution networks, detailed modeling of key links is conducted such as H-bridge series and isolated bidirectional active bridge structures, three-phase inverters, and three-phase Buck converters in the main valve tower of power electronic transformer. Through time domain simulation, the 4 Hz low frequency oscillation phenomenon on the DC side of the AC/DC distribution network in the actual project is reproduced, and the correctness of the established mathematical model is verified. Based on the established mathematical model, qualitative analysis is conducted on key influencing factors such as power and controller parameters, and the final conclusions are as follows: power level and Buck link voltage loop control parameters affect system stability, the integral coefficient of the current loop in the Buck link affects the oscillation frequency.https://www.epet-info.com/dlgcjsen/article/abstract/210317235ac/dc distribution networkpower electronic transformerlow frequency oscillationthree-phase buck converterstime domain simulationcauses of oscillation |
| spellingShingle | FAN Dongchen ZHANG Chenyu JIANG Yunlong LIU Wenkai YUAN Yubo YUAN Xiaoming Analysis for low frequency oscillation on the DC side of AC/DC distribution network based on PET control characteristics 电力工程技术 ac/dc distribution network power electronic transformer low frequency oscillation three-phase buck converters time domain simulation causes of oscillation |
| title | Analysis for low frequency oscillation on the DC side of AC/DC distribution network based on PET control characteristics |
| title_full | Analysis for low frequency oscillation on the DC side of AC/DC distribution network based on PET control characteristics |
| title_fullStr | Analysis for low frequency oscillation on the DC side of AC/DC distribution network based on PET control characteristics |
| title_full_unstemmed | Analysis for low frequency oscillation on the DC side of AC/DC distribution network based on PET control characteristics |
| title_short | Analysis for low frequency oscillation on the DC side of AC/DC distribution network based on PET control characteristics |
| title_sort | analysis for low frequency oscillation on the dc side of ac dc distribution network based on pet control characteristics |
| topic | ac/dc distribution network power electronic transformer low frequency oscillation three-phase buck converters time domain simulation causes of oscillation |
| url | https://www.epet-info.com/dlgcjsen/article/abstract/210317235 |
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