A distributed control architecture for global system economic operation in autonomous hybrid AC/DC microgrids
It is renowned that the entire power system operation cost can be minimized when distributed generators (DGs) have the same incremental costs (ICs). This paper proposes a distributed control architecture for a hybrid ac/dc microgrid (MG) to realize global system economic operation. The architecture...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/141325 |
| _version_ | 1824454651175501824 |
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| author | Lin, Pengfeng Jin, Chi Xiao, Jianfang Li, Xiaoqiang Shi, Donghan Tang, Yi Wang, Peng |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Lin, Pengfeng Jin, Chi Xiao, Jianfang Li, Xiaoqiang Shi, Donghan Tang, Yi Wang, Peng |
| author_sort | Lin, Pengfeng |
| collection | NTU |
| description | It is renowned that the entire power system operation cost can be minimized when distributed generators (DGs) have the same incremental costs (ICs). This paper proposes a distributed control architecture for a hybrid ac/dc microgrid (MG) to realize global system economic operation. The architecture consists of two levels. In the first level, the ac frequency-IC (f ac -IC) droop and the dc bus voltage-IC (VdcIC) droop are employed in the ac and dc subgrids, respectively. With the synchronization of f ac and V dc , DG ICs in each subgrid will be equalized. However, the droops will inevitably cause deviations of f ac and V dc . Then a distributed control canonical form (DCCF), which provides a generalized method for f ac and V dc recoveries, is proposed in the second level. The DCCF allows DGs to communicate only with their neighbors, thus alleviating the communication burdens and enhancing the system scalability. Due to the presence of DCCF, f ac and V dc fluctuations, which naturally indicate subgrid loading conditions, are invisible. An original relative loading index (RLI) is proposed to extract the hidden loading condition of each subgrid even thoughfac and V dc are clamped as constants. By using RLI, the power reference of the bidirectional interlinking converter can be easily defined. All DG ICs the hybrid MG converge to the same value in the steady state. The feasibility and effectiveness of the proposed control architecture are verified by simulations and RT-LAB hardware in loop tests. |
| first_indexed | 2025-02-19T03:25:42Z |
| format | Journal Article |
| id | ntu-10356/141325 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:25:42Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1413252021-01-08T05:56:12Z A distributed control architecture for global system economic operation in autonomous hybrid AC/DC microgrids Lin, Pengfeng Jin, Chi Xiao, Jianfang Li, Xiaoqiang Shi, Donghan Tang, Yi Wang, Peng School of Electrical and Electronic Engineering Energy Research Institute @ NTU (ERI@N) Engineering::Electrical and electronic engineering Hybrid AC/DC Microgrid Distributed Control It is renowned that the entire power system operation cost can be minimized when distributed generators (DGs) have the same incremental costs (ICs). This paper proposes a distributed control architecture for a hybrid ac/dc microgrid (MG) to realize global system economic operation. The architecture consists of two levels. In the first level, the ac frequency-IC (f ac -IC) droop and the dc bus voltage-IC (VdcIC) droop are employed in the ac and dc subgrids, respectively. With the synchronization of f ac and V dc , DG ICs in each subgrid will be equalized. However, the droops will inevitably cause deviations of f ac and V dc . Then a distributed control canonical form (DCCF), which provides a generalized method for f ac and V dc recoveries, is proposed in the second level. The DCCF allows DGs to communicate only with their neighbors, thus alleviating the communication burdens and enhancing the system scalability. Due to the presence of DCCF, f ac and V dc fluctuations, which naturally indicate subgrid loading conditions, are invisible. An original relative loading index (RLI) is proposed to extract the hidden loading condition of each subgrid even thoughfac and V dc are clamped as constants. By using RLI, the power reference of the bidirectional interlinking converter can be easily defined. All DG ICs the hybrid MG converge to the same value in the steady state. The feasibility and effectiveness of the proposed control architecture are verified by simulations and RT-LAB hardware in loop tests. EDB (Economic Devt. Board, S’pore) 2020-06-08T00:38:24Z 2020-06-08T00:38:24Z 2018 Journal Article Lin, P., Jin, C., Xiao, J., Li, X., Shi, D., Tang, Y., & Wang, P. (2019). A distributed control architecture for global system economic operation in autonomous hybrid AC/DC microgrids. IEEE Transactions on Smart Grid, 10(3), 2603-2617. doi:10.1109/TSG.2018.2805839 1949-3053 https://hdl.handle.net/10356/141325 10.1109/TSG.2018.2805839 2-s2.0-85042082520 3 10 2603 2617 en IEEE Transactions on Smart Grid © 2018 IEEE. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering Hybrid AC/DC Microgrid Distributed Control Lin, Pengfeng Jin, Chi Xiao, Jianfang Li, Xiaoqiang Shi, Donghan Tang, Yi Wang, Peng A distributed control architecture for global system economic operation in autonomous hybrid AC/DC microgrids |
| title | A distributed control architecture for global system economic operation in autonomous hybrid AC/DC microgrids |
| title_full | A distributed control architecture for global system economic operation in autonomous hybrid AC/DC microgrids |
| title_fullStr | A distributed control architecture for global system economic operation in autonomous hybrid AC/DC microgrids |
| title_full_unstemmed | A distributed control architecture for global system economic operation in autonomous hybrid AC/DC microgrids |
| title_short | A distributed control architecture for global system economic operation in autonomous hybrid AC/DC microgrids |
| title_sort | distributed control architecture for global system economic operation in autonomous hybrid ac dc microgrids |
| topic | Engineering::Electrical and electronic engineering Hybrid AC/DC Microgrid Distributed Control |
| url | https://hdl.handle.net/10356/141325 |
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