Low-frequency oscillation analysis of two-stage photovoltaic grid-connected system
The low-frequency oscillation (LFO) problem of photovoltaic (PV) grid-connected systems has been a critical concern for safe operation, whereas the impact of dc-side components of PV plants are always ignored and single-stage PV plant is used. This paper performs a comprehensive analysis of the LFOs...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
|
| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722014755 |
| _version_ | 1797900725986000896 |
|---|---|
| author | Bingbing Shao Zilong Miao Liyuan Wang Xiaoxiao Meng Zhe Chen |
| author_facet | Bingbing Shao Zilong Miao Liyuan Wang Xiaoxiao Meng Zhe Chen |
| author_sort | Bingbing Shao |
| collection | DOAJ |
| description | The low-frequency oscillation (LFO) problem of photovoltaic (PV) grid-connected systems has been a critical concern for safe operation, whereas the impact of dc-side components of PV plants are always ignored and single-stage PV plant is used. This paper performs a comprehensive analysis of the LFOs in the two-stage PV grid-connected system. The complete small-signal model of the two-stage PV system is built. On this basis, the LFO modes and high-frequency oscillation (HFO) modes are calculated and related participating components are determined. Then, the impact of key parameters on the LFO characteristics is investigated with the root locus analysis. The theoretical analysis is verified through PSCAD/EMTDC simulations. |
| first_indexed | 2024-04-10T08:49:27Z |
| format | Article |
| id | doaj.art-c4dbe181abfd4af0a1edc542ffb54a11 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-10T08:49:27Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-c4dbe181abfd4af0a1edc542ffb54a112023-02-22T04:31:04ZengElsevierEnergy Reports2352-48472022-11-018241248Low-frequency oscillation analysis of two-stage photovoltaic grid-connected systemBingbing Shao0Zilong Miao1Liyuan Wang2Xiaoxiao Meng3Zhe Chen4Anhui Province Key Laboratory of Renewable Energy Utilization and Energy Saving (Hefei University of Technology), Hefei 230009, China; Corresponding author.Anhui Province Key Laboratory of Renewable Energy Utilization and Energy Saving (Hefei University of Technology), Hefei 230009, ChinaState Grid Changfeng County Electric Power Supply Company, Hefei 231131, ChinaAnhui Province Key Laboratory of Renewable Energy Utilization and Energy Saving (Hefei University of Technology), Hefei 230009, ChinaDepartment of Energy Technology, Aalborg University, 9220 Aalborg, DenmarkThe low-frequency oscillation (LFO) problem of photovoltaic (PV) grid-connected systems has been a critical concern for safe operation, whereas the impact of dc-side components of PV plants are always ignored and single-stage PV plant is used. This paper performs a comprehensive analysis of the LFOs in the two-stage PV grid-connected system. The complete small-signal model of the two-stage PV system is built. On this basis, the LFO modes and high-frequency oscillation (HFO) modes are calculated and related participating components are determined. Then, the impact of key parameters on the LFO characteristics is investigated with the root locus analysis. The theoretical analysis is verified through PSCAD/EMTDC simulations.http://www.sciencedirect.com/science/article/pii/S2352484722014755Two-stage photovoltaic plantLow-frequency oscillationHigh-frequency oscillationSmall-signal model |
| spellingShingle | Bingbing Shao Zilong Miao Liyuan Wang Xiaoxiao Meng Zhe Chen Low-frequency oscillation analysis of two-stage photovoltaic grid-connected system Energy Reports Two-stage photovoltaic plant Low-frequency oscillation High-frequency oscillation Small-signal model |
| title | Low-frequency oscillation analysis of two-stage photovoltaic grid-connected system |
| title_full | Low-frequency oscillation analysis of two-stage photovoltaic grid-connected system |
| title_fullStr | Low-frequency oscillation analysis of two-stage photovoltaic grid-connected system |
| title_full_unstemmed | Low-frequency oscillation analysis of two-stage photovoltaic grid-connected system |
| title_short | Low-frequency oscillation analysis of two-stage photovoltaic grid-connected system |
| title_sort | low frequency oscillation analysis of two stage photovoltaic grid connected system |
| topic | Two-stage photovoltaic plant Low-frequency oscillation High-frequency oscillation Small-signal model |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722014755 |
| work_keys_str_mv | AT bingbingshao lowfrequencyoscillationanalysisoftwostagephotovoltaicgridconnectedsystem AT zilongmiao lowfrequencyoscillationanalysisoftwostagephotovoltaicgridconnectedsystem AT liyuanwang lowfrequencyoscillationanalysisoftwostagephotovoltaicgridconnectedsystem AT xiaoxiaomeng lowfrequencyoscillationanalysisoftwostagephotovoltaicgridconnectedsystem AT zhechen lowfrequencyoscillationanalysisoftwostagephotovoltaicgridconnectedsystem |