Static voltage stability of photovoltaic grid-connected system based on eigenvalue index
With the continuous development of renewable energy, photovoltaic power stations show a trend of large-scale grid connection, but the disorderly development of photovoltaic grid connection induces the static voltage instability in photovoltaic grid-connected system. Firstly, an equivalent model of p...
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| Format: | Article |
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Editorial Department of Electric Power Engineering Technology
2023-11-01
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| Series: | 电力工程技术 |
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| Online Access: | https://www.epet-info.com/dlgcjsen/article/abstract/230302206 |
| _version_ | 1797405584856711168 |
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| author | YAO Jingzhou FU Qiang DU Wenjuan YANG Jia |
| author_facet | YAO Jingzhou FU Qiang DU Wenjuan YANG Jia |
| author_sort | YAO Jingzhou |
| collection | DOAJ |
| description | With the continuous development of renewable energy, photovoltaic power stations show a trend of large-scale grid connection, but the disorderly development of photovoltaic grid connection induces the static voltage instability in photovoltaic grid-connected system. Firstly, an equivalent model of photovoltaic large-scale grid-connected system using the equivalent admittance of photovoltaics is constructed in this paper, and the impact of photovoltaic grid-connected system on static voltage stability is quantified as the impact of photovoltaic equivalent admittance on the eigenvalue of the admittance matrix. It is concluded that the decrease of the minimum eigenvalue of the admittance matrix reduces the static voltage stability of photovoltaic grid-connected system. Further an evaluation index for static voltage stability of photovoltaic grid-connected system based on eigenvalue-active power sensitivity is proposed. Considering the strong correlation between the admittance matrix and the network topology of photovoltaic grid-connected system, the influence of the network topology on static voltage stability is analyzed. Photovoltaic grid-connected schemes which can improve the static voltage stability are proposed from AC and DC perspectives, and it is concluded that changing the topology of the transmission network reasonably can improve the static voltage stability of photovoltaic grid-connected system. Finally, based on a IEEE 14-node system example, the eigenvalue index and the photovoltaic grid-connected scheme proposed in this paper is validated to ensure the static voltage stability of large-scale photovoltaic grid-connected systems and promote orderly grid connection of photovoltaic system. |
| first_indexed | 2024-03-09T03:12:06Z |
| format | Article |
| id | doaj.art-a1dcb8352e4448c6bbb2d5259b870958 |
| institution | Directory Open Access Journal |
| issn | 2096-3203 |
| language | zho |
| last_indexed | 2024-03-09T03:12:06Z |
| publishDate | 2023-11-01 |
| publisher | Editorial Department of Electric Power Engineering Technology |
| record_format | Article |
| series | 电力工程技术 |
| spelling | doaj.art-a1dcb8352e4448c6bbb2d5259b8709582023-12-04T00:44:16ZzhoEditorial Department of Electric Power Engineering Technology电力工程技术2096-32032023-11-01426324110.12158/j.2096-3203.2023.06.004230302206Static voltage stability of photovoltaic grid-connected system based on eigenvalue indexYAO Jingzhou0FU Qiang1DU Wenjuan2YANG Jia3College of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaNARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, ChinaWith the continuous development of renewable energy, photovoltaic power stations show a trend of large-scale grid connection, but the disorderly development of photovoltaic grid connection induces the static voltage instability in photovoltaic grid-connected system. Firstly, an equivalent model of photovoltaic large-scale grid-connected system using the equivalent admittance of photovoltaics is constructed in this paper, and the impact of photovoltaic grid-connected system on static voltage stability is quantified as the impact of photovoltaic equivalent admittance on the eigenvalue of the admittance matrix. It is concluded that the decrease of the minimum eigenvalue of the admittance matrix reduces the static voltage stability of photovoltaic grid-connected system. Further an evaluation index for static voltage stability of photovoltaic grid-connected system based on eigenvalue-active power sensitivity is proposed. Considering the strong correlation between the admittance matrix and the network topology of photovoltaic grid-connected system, the influence of the network topology on static voltage stability is analyzed. Photovoltaic grid-connected schemes which can improve the static voltage stability are proposed from AC and DC perspectives, and it is concluded that changing the topology of the transmission network reasonably can improve the static voltage stability of photovoltaic grid-connected system. Finally, based on a IEEE 14-node system example, the eigenvalue index and the photovoltaic grid-connected scheme proposed in this paper is validated to ensure the static voltage stability of large-scale photovoltaic grid-connected systems and promote orderly grid connection of photovoltaic system.https://www.epet-info.com/dlgcjsen/article/abstract/230302206large-scale photovoltaicstatic voltage stabilitysimilarity transformationmodel analysiseigenvalue-sensitivityphotovoltaic grid-connected scheme |
| spellingShingle | YAO Jingzhou FU Qiang DU Wenjuan YANG Jia Static voltage stability of photovoltaic grid-connected system based on eigenvalue index 电力工程技术 large-scale photovoltaic static voltage stability similarity transformation model analysis eigenvalue-sensitivity photovoltaic grid-connected scheme |
| title | Static voltage stability of photovoltaic grid-connected system based on eigenvalue index |
| title_full | Static voltage stability of photovoltaic grid-connected system based on eigenvalue index |
| title_fullStr | Static voltage stability of photovoltaic grid-connected system based on eigenvalue index |
| title_full_unstemmed | Static voltage stability of photovoltaic grid-connected system based on eigenvalue index |
| title_short | Static voltage stability of photovoltaic grid-connected system based on eigenvalue index |
| title_sort | static voltage stability of photovoltaic grid connected system based on eigenvalue index |
| topic | large-scale photovoltaic static voltage stability similarity transformation model analysis eigenvalue-sensitivity photovoltaic grid-connected scheme |
| url | https://www.epet-info.com/dlgcjsen/article/abstract/230302206 |
| work_keys_str_mv | AT yaojingzhou staticvoltagestabilityofphotovoltaicgridconnectedsystembasedoneigenvalueindex AT fuqiang staticvoltagestabilityofphotovoltaicgridconnectedsystembasedoneigenvalueindex AT duwenjuan staticvoltagestabilityofphotovoltaicgridconnectedsystembasedoneigenvalueindex AT yangjia staticvoltagestabilityofphotovoltaicgridconnectedsystembasedoneigenvalueindex |