Improved dynamic voltage restorer with reduced capacity of power inverter and energy storage for voltage sag mitigation
Abstract As one of the most representative series active compensators, dynamic voltage restorer (DVR) can solve voltage‐related power quality uses effectively. The in‐phase voltage control and energy‐optimised control are the two typical control strategies of DVR. However, the in‐phase voltage contr...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-04-01
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| Series: | IET Power Electronics |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/pel2.12078 |
| _version_ | 1797989801358524416 |
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| author | Qi Guo Chunming Tu Fei Jiang Rongwu Zhu Fan Xiao Cheng Chen |
| author_facet | Qi Guo Chunming Tu Fei Jiang Rongwu Zhu Fan Xiao Cheng Chen |
| author_sort | Qi Guo |
| collection | DOAJ |
| description | Abstract As one of the most representative series active compensators, dynamic voltage restorer (DVR) can solve voltage‐related power quality uses effectively. The in‐phase voltage control and energy‐optimised control are the two typical control strategies of DVR. However, the in‐phase voltage control results in a large amount of active power exchange between the main grid and the dc link of DVR, and hence high capacity of storage system is needed in the dc link while the energy‐optimised strategy requires high injected voltage, resulting in oversizing of the DVR inverter. Thus, in order to avoid the aforementioned drawbacks, this study proposes a modified DVR, which connects an external capacitor in series with the LC filter (LCC) of DVR (LCC‐DVR). Based on the operational principles of the LCC‐DVR, an updated procedure of reference voltage is proposed to avoid overmodulation of DVR caused by load variations, ensuring the continuous operation capability of the LCC‐DVR. The overall control scheme of the LCC‐DVR and the comparative analysis among the proposed strategy and traditional strategies are also presented. The effectiveness of the proposed topology and method is clearly validated by the simulation and experimental results. |
| first_indexed | 2024-04-11T08:26:18Z |
| format | Article |
| id | doaj.art-f4b1e2b1e0c14de6a50bed0a8e9f74ca |
| institution | Directory Open Access Journal |
| issn | 1755-4535 1755-4543 |
| language | English |
| last_indexed | 2024-04-11T08:26:18Z |
| publishDate | 2021-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Power Electronics |
| spelling | doaj.art-f4b1e2b1e0c14de6a50bed0a8e9f74ca2022-12-22T04:34:44ZengWileyIET Power Electronics1755-45351755-45432021-04-0114595896810.1049/pel2.12078Improved dynamic voltage restorer with reduced capacity of power inverter and energy storage for voltage sag mitigationQi Guo0Chunming Tu1Fei Jiang2Rongwu Zhu3Fan Xiao4Cheng Chen5National Electric Power Conversion Control Engineering Technology Research Centre Hunan University Changsha ChinaNational Electric Power Conversion Control Engineering Technology Research Centre Hunan University Changsha ChinaSchool of Electrical and Information Engineering Changsha University of Science & Technology Changsha ChinaSchool of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen ChinaNational Electric Power Conversion Control Engineering Technology Research Centre Hunan University Changsha ChinaBeijing Electric Power Company State Grid Corporation of China Beijing ChinaAbstract As one of the most representative series active compensators, dynamic voltage restorer (DVR) can solve voltage‐related power quality uses effectively. The in‐phase voltage control and energy‐optimised control are the two typical control strategies of DVR. However, the in‐phase voltage control results in a large amount of active power exchange between the main grid and the dc link of DVR, and hence high capacity of storage system is needed in the dc link while the energy‐optimised strategy requires high injected voltage, resulting in oversizing of the DVR inverter. Thus, in order to avoid the aforementioned drawbacks, this study proposes a modified DVR, which connects an external capacitor in series with the LC filter (LCC) of DVR (LCC‐DVR). Based on the operational principles of the LCC‐DVR, an updated procedure of reference voltage is proposed to avoid overmodulation of DVR caused by load variations, ensuring the continuous operation capability of the LCC‐DVR. The overall control scheme of the LCC‐DVR and the comparative analysis among the proposed strategy and traditional strategies are also presented. The effectiveness of the proposed topology and method is clearly validated by the simulation and experimental results.https://doi.org/10.1049/pel2.12078Voltage controlControl of electric power systemsPower supply quality and harmonicsPower convertors and power supplies to apparatus |
| spellingShingle | Qi Guo Chunming Tu Fei Jiang Rongwu Zhu Fan Xiao Cheng Chen Improved dynamic voltage restorer with reduced capacity of power inverter and energy storage for voltage sag mitigation IET Power Electronics Voltage control Control of electric power systems Power supply quality and harmonics Power convertors and power supplies to apparatus |
| title | Improved dynamic voltage restorer with reduced capacity of power inverter and energy storage for voltage sag mitigation |
| title_full | Improved dynamic voltage restorer with reduced capacity of power inverter and energy storage for voltage sag mitigation |
| title_fullStr | Improved dynamic voltage restorer with reduced capacity of power inverter and energy storage for voltage sag mitigation |
| title_full_unstemmed | Improved dynamic voltage restorer with reduced capacity of power inverter and energy storage for voltage sag mitigation |
| title_short | Improved dynamic voltage restorer with reduced capacity of power inverter and energy storage for voltage sag mitigation |
| title_sort | improved dynamic voltage restorer with reduced capacity of power inverter and energy storage for voltage sag mitigation |
| topic | Voltage control Control of electric power systems Power supply quality and harmonics Power convertors and power supplies to apparatus |
| url | https://doi.org/10.1049/pel2.12078 |
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