Passive Sliding Mode Controlled UPFC and its Treatment Strategy of Unbalanced Grid Conditions
Modular multilevel converter based unified power flow controller (MMC-UPFC) can provide flexible power regulation and plays an important role in the smart grid and future distribution networks. PI controller is widely adopted in the Unified power flow controller (UPFC) control. However, it is often...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-07-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2021.712397/full |
| _version_ | 1819138097649025024 |
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| author | Yang Chen Han Wang Miao Zhu Ming Liu Jianjun Ma Xu Cai |
| author_facet | Yang Chen Han Wang Miao Zhu Ming Liu Jianjun Ma Xu Cai |
| author_sort | Yang Chen |
| collection | DOAJ |
| description | Modular multilevel converter based unified power flow controller (MMC-UPFC) can provide flexible power regulation and plays an important role in the smart grid and future distribution networks. PI controller is widely adopted in the Unified power flow controller (UPFC) control. However, it is often difficult to figure out a pair of stable control parameters with good dynamic performance. A passive sliding mode control strategy of MMC-UPFC is proposed in this paper to achieve the advantages of both the passive controller and sliding mode controller. The proposed passive sliding mode control strategy has a fast response speed and is not sensitive to system parameter variation. Since unbalance grid voltage conditions are common in the modern distribution networks, an unbalanced grid treatment strategy is also presented with the series side of MMC-UPFC. Negative sequence components of the grid voltages are detected by the cross-decoupling method with second order generalized integrator and then compensated by the series side of MMC-UPFC. The series side converter controls the power flow and treats unbalanced grid conditions simultaneously. The efficiency of the general device is increased thus. A 27-level MMC-UPFC simulation system is built based on the Shanghai UPFC Project and validate the proposed approach. |
| first_indexed | 2024-12-22T11:01:21Z |
| format | Article |
| id | doaj.art-545da9c4a86343f0a30b67a10c929872 |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-12-22T11:01:21Z |
| publishDate | 2021-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-545da9c4a86343f0a30b67a10c9298722022-12-21T18:28:29ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2021-07-01910.3389/fenrg.2021.712397712397Passive Sliding Mode Controlled UPFC and its Treatment Strategy of Unbalanced Grid ConditionsYang ChenHan WangMiao ZhuMing LiuJianjun MaXu CaiModular multilevel converter based unified power flow controller (MMC-UPFC) can provide flexible power regulation and plays an important role in the smart grid and future distribution networks. PI controller is widely adopted in the Unified power flow controller (UPFC) control. However, it is often difficult to figure out a pair of stable control parameters with good dynamic performance. A passive sliding mode control strategy of MMC-UPFC is proposed in this paper to achieve the advantages of both the passive controller and sliding mode controller. The proposed passive sliding mode control strategy has a fast response speed and is not sensitive to system parameter variation. Since unbalance grid voltage conditions are common in the modern distribution networks, an unbalanced grid treatment strategy is also presented with the series side of MMC-UPFC. Negative sequence components of the grid voltages are detected by the cross-decoupling method with second order generalized integrator and then compensated by the series side of MMC-UPFC. The series side converter controls the power flow and treats unbalanced grid conditions simultaneously. The efficiency of the general device is increased thus. A 27-level MMC-UPFC simulation system is built based on the Shanghai UPFC Project and validate the proposed approach.https://www.frontiersin.org/articles/10.3389/fenrg.2021.712397/fullunified power flow controllermodular multilevel converterpassive controlsliding mode controlunbalanced grid condition treatment |
| spellingShingle | Yang Chen Han Wang Miao Zhu Ming Liu Jianjun Ma Xu Cai Passive Sliding Mode Controlled UPFC and its Treatment Strategy of Unbalanced Grid Conditions Frontiers in Energy Research unified power flow controller modular multilevel converter passive control sliding mode control unbalanced grid condition treatment |
| title | Passive Sliding Mode Controlled UPFC and its Treatment Strategy of Unbalanced Grid Conditions |
| title_full | Passive Sliding Mode Controlled UPFC and its Treatment Strategy of Unbalanced Grid Conditions |
| title_fullStr | Passive Sliding Mode Controlled UPFC and its Treatment Strategy of Unbalanced Grid Conditions |
| title_full_unstemmed | Passive Sliding Mode Controlled UPFC and its Treatment Strategy of Unbalanced Grid Conditions |
| title_short | Passive Sliding Mode Controlled UPFC and its Treatment Strategy of Unbalanced Grid Conditions |
| title_sort | passive sliding mode controlled upfc and its treatment strategy of unbalanced grid conditions |
| topic | unified power flow controller modular multilevel converter passive control sliding mode control unbalanced grid condition treatment |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2021.712397/full |
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