Research on a DC interconnection system based on a cascaded three-level converter for an island multi-energy microgrid
With the world’s transformation to low-carbon energy, island microgrids are developing rapidly because they can save energy and reduce carbon. Island multi-energy microgrids include photovoltaics, a double-fed fan, a battery energy storage system, and AC and DC loads. However, microgrids with high p...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2024-11-01
|
| Series: | Frontiers in Energy Research |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2024.1495854/full |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846151486802755584 |
|---|---|
| author | Xiaomin Liu Zheng Wang Shangke Liu Bin Bai Xiangnan Du |
| author_facet | Xiaomin Liu Zheng Wang Shangke Liu Bin Bai Xiangnan Du |
| author_sort | Xiaomin Liu |
| collection | DOAJ |
| description | With the world’s transformation to low-carbon energy, island microgrids are developing rapidly because they can save energy and reduce carbon. Island multi-energy microgrids include photovoltaics, a double-fed fan, a battery energy storage system, and AC and DC loads. However, microgrids with high proportions of renewable energy have problems such as large power supply fluctuations and poor power quality. Connection to an AC power grid interconnection will greatly affect their reliability and stability. Firstly, a cascaded neutral point clamped three-level converter (C-NPC) DC interconnection system scheme is proposed. Secondly, the Island C-NPC mathematical models are established, and the flexible multi-mode control of island C-NPCs is proposed. Subsequently, corresponding additional control strategies for DC voltage sharing and AC current sharing among C-NPC modules are designed for the island multienergy microgrid to achieve reliable power supply. Finally, taking an island interconnection project on the east coast of China as a research object, a typical system operation test was performed to verify the good operational characteristics of the system. This research can promote the utilization of clean energy in island regional power grids, achieve carbon reduction, and promote global carbon neutrality. |
| format | Article |
| id | doaj-art-adcb1dab835c44d89c092165dbbd9961 |
| institution | Kabale University |
| issn | 2296-598X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj-art-adcb1dab835c44d89c092165dbbd99612024-11-27T11:22:18ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2024-11-011210.3389/fenrg.2024.14958541495854Research on a DC interconnection system based on a cascaded three-level converter for an island multi-energy microgridXiaomin Liu0Zheng Wang1Shangke Liu2Bin Bai3Xiangnan Du4State Grid Ningxia Electric Power Co.Ltd Eco-tech Research Institute, Ningxia, ChinaState Grid Ningxia Electric Power Co.Ltd Eco-tech Research Institute, Ningxia, ChinaState Grid Ningxia Electric Power Co.Ltd Eco-tech Research Institute, Ningxia, ChinaState Grid Ningxia Electric Power Co.Ltd Eco-tech Research Institute, Ningxia, ChinaBeijing DC T&D Engineering Technology Research Center (NARI China-EPRI Electrical Engineering Co., Ltd.), Beijing, ChinaWith the world’s transformation to low-carbon energy, island microgrids are developing rapidly because they can save energy and reduce carbon. Island multi-energy microgrids include photovoltaics, a double-fed fan, a battery energy storage system, and AC and DC loads. However, microgrids with high proportions of renewable energy have problems such as large power supply fluctuations and poor power quality. Connection to an AC power grid interconnection will greatly affect their reliability and stability. Firstly, a cascaded neutral point clamped three-level converter (C-NPC) DC interconnection system scheme is proposed. Secondly, the Island C-NPC mathematical models are established, and the flexible multi-mode control of island C-NPCs is proposed. Subsequently, corresponding additional control strategies for DC voltage sharing and AC current sharing among C-NPC modules are designed for the island multienergy microgrid to achieve reliable power supply. Finally, taking an island interconnection project on the east coast of China as a research object, a typical system operation test was performed to verify the good operational characteristics of the system. This research can promote the utilization of clean energy in island regional power grids, achieve carbon reduction, and promote global carbon neutrality.https://www.frontiersin.org/articles/10.3389/fenrg.2024.1495854/fullislandmulti-energy microgridDC interconnection systemflexible multi-mode controlcarbon reduction |
| spellingShingle | Xiaomin Liu Zheng Wang Shangke Liu Bin Bai Xiangnan Du Research on a DC interconnection system based on a cascaded three-level converter for an island multi-energy microgrid Frontiers in Energy Research island multi-energy microgrid DC interconnection system flexible multi-mode control carbon reduction |
| title | Research on a DC interconnection system based on a cascaded three-level converter for an island multi-energy microgrid |
| title_full | Research on a DC interconnection system based on a cascaded three-level converter for an island multi-energy microgrid |
| title_fullStr | Research on a DC interconnection system based on a cascaded three-level converter for an island multi-energy microgrid |
| title_full_unstemmed | Research on a DC interconnection system based on a cascaded three-level converter for an island multi-energy microgrid |
| title_short | Research on a DC interconnection system based on a cascaded three-level converter for an island multi-energy microgrid |
| title_sort | research on a dc interconnection system based on a cascaded three level converter for an island multi energy microgrid |
| topic | island multi-energy microgrid DC interconnection system flexible multi-mode control carbon reduction |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2024.1495854/full |
| work_keys_str_mv | AT xiaominliu researchonadcinterconnectionsystembasedonacascadedthreelevelconverterforanislandmultienergymicrogrid AT zhengwang researchonadcinterconnectionsystembasedonacascadedthreelevelconverterforanislandmultienergymicrogrid AT shangkeliu researchonadcinterconnectionsystembasedonacascadedthreelevelconverterforanislandmultienergymicrogrid AT binbai researchonadcinterconnectionsystembasedonacascadedthreelevelconverterforanislandmultienergymicrogrid AT xiangnandu researchonadcinterconnectionsystembasedonacascadedthreelevelconverterforanislandmultienergymicrogrid |