Adaptive Droop Control of the MTDC System With High-Capacity Energy Storage Based on Dynamic and Static Power Decoupling Method
In a multiterminal DC (MTDC) system with a large number of different types of energy storage devices, the AC terminals and the energy storage devices need to cooperate to maintain the stability of the DC bus voltage. Due to the difference in the dynamic and static power capability of each energy sto...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-10-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2021.710682/full |
| _version_ | 1818919405217644544 |
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| author | Luyao Xie Xin Guo Chun Wei Youbing Zhang Yi Chen Congbin Liang Yuantian Xue Ermin Zhao |
| author_facet | Luyao Xie Xin Guo Chun Wei Youbing Zhang Yi Chen Congbin Liang Yuantian Xue Ermin Zhao |
| author_sort | Luyao Xie |
| collection | DOAJ |
| description | In a multiterminal DC (MTDC) system with a large number of different types of energy storage devices, the AC terminals and the energy storage devices need to cooperate to maintain the stability of the DC bus voltage. Due to the difference in the dynamic and static power capability of each energy storage unit, the dynamic and static power should be distributed separately. To solve the above problems, an adaptive droop control strategy based on the dynamic and static power decoupling is proposed in this paper. The impact of the virtual impedance values on the dynamic and static power flows between the DC voltage regulating terminals operating with the RC droop method is analyzed. Through optimized virtual capacitance and adaptive virtual resistance, the dynamic power and static power can be distributed according to the PCS capacity and the available charge–discharge battery capacity, respectively. In addition, a simple secondary control method is adopted to compensate the static deviation of the DC bus voltage. Finally, a six-terminal MTDC system model is established in Matlab/Simulink, and the simulation results verify the feasibility and effectiveness of the proposed control strategy. |
| first_indexed | 2024-12-20T01:05:20Z |
| format | Article |
| id | doaj.art-0de455a5f13c4203bcd77f674d935cba |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-12-20T01:05:20Z |
| publishDate | 2021-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-0de455a5f13c4203bcd77f674d935cba2022-12-21T19:58:51ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2021-10-01910.3389/fenrg.2021.710682710682Adaptive Droop Control of the MTDC System With High-Capacity Energy Storage Based on Dynamic and Static Power Decoupling MethodLuyao Xie0Xin Guo1Chun Wei2Youbing Zhang3Yi Chen4Congbin Liang5Yuantian Xue6Ermin Zhao7College of Information Engineering, Zhejiang University of Technology, Hangzhou, ChinaCollege of Information Engineering, Zhejiang University of Technology, Hangzhou, ChinaCollege of Information Engineering, Zhejiang University of Technology, Hangzhou, ChinaCollege of Information Engineering, Zhejiang University of Technology, Hangzhou, ChinaZhijiang College of Zhejiang University of Technology, Shaoxin, ChinaState Grid Gansu Electric Power Company, Wuwei Power Supply Company, Wuwei, ChinaState Grid Gansu Electric Power Company, Wuwei Power Supply Company, Wuwei, ChinaState Grid Gansu Electric Power Company, Wuwei Power Supply Company, Wuwei, ChinaIn a multiterminal DC (MTDC) system with a large number of different types of energy storage devices, the AC terminals and the energy storage devices need to cooperate to maintain the stability of the DC bus voltage. Due to the difference in the dynamic and static power capability of each energy storage unit, the dynamic and static power should be distributed separately. To solve the above problems, an adaptive droop control strategy based on the dynamic and static power decoupling is proposed in this paper. The impact of the virtual impedance values on the dynamic and static power flows between the DC voltage regulating terminals operating with the RC droop method is analyzed. Through optimized virtual capacitance and adaptive virtual resistance, the dynamic power and static power can be distributed according to the PCS capacity and the available charge–discharge battery capacity, respectively. In addition, a simple secondary control method is adopted to compensate the static deviation of the DC bus voltage. Finally, a six-terminal MTDC system model is established in Matlab/Simulink, and the simulation results verify the feasibility and effectiveness of the proposed control strategy.https://www.frontiersin.org/articles/10.3389/fenrg.2021.710682/fullmultiterminal DC systemadaptive droop controldynamic power and static power decouplingdroop parameters designsecondary control |
| spellingShingle | Luyao Xie Xin Guo Chun Wei Youbing Zhang Yi Chen Congbin Liang Yuantian Xue Ermin Zhao Adaptive Droop Control of the MTDC System With High-Capacity Energy Storage Based on Dynamic and Static Power Decoupling Method Frontiers in Energy Research multiterminal DC system adaptive droop control dynamic power and static power decoupling droop parameters design secondary control |
| title | Adaptive Droop Control of the MTDC System With High-Capacity Energy Storage Based on Dynamic and Static Power Decoupling Method |
| title_full | Adaptive Droop Control of the MTDC System With High-Capacity Energy Storage Based on Dynamic and Static Power Decoupling Method |
| title_fullStr | Adaptive Droop Control of the MTDC System With High-Capacity Energy Storage Based on Dynamic and Static Power Decoupling Method |
| title_full_unstemmed | Adaptive Droop Control of the MTDC System With High-Capacity Energy Storage Based on Dynamic and Static Power Decoupling Method |
| title_short | Adaptive Droop Control of the MTDC System With High-Capacity Energy Storage Based on Dynamic and Static Power Decoupling Method |
| title_sort | adaptive droop control of the mtdc system with high capacity energy storage based on dynamic and static power decoupling method |
| topic | multiterminal DC system adaptive droop control dynamic power and static power decoupling droop parameters design secondary control |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2021.710682/full |
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