A multi-objective prevention strategy for grid cascading failure based on vulnerable lines screening
A multi-objective prevention strategy for grid cascading failures based on the screening of vulnerable branches is proposed in this paper for the phenomenon of cascading failures triggered by line faults in power systems. Firstly, an improved line safety index and system safety index are proposed, a...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Electric Power Engineering Technology
2023-03-01
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| Series: | 电力工程技术 |
| Subjects: | |
| Online Access: | https://www.epet-info.com/dlgcjsen/article/abstract/220315336 |
| _version_ | 1797859029462024192 |
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| author | DENG Huiqiong ZENG Fangan ZHANG Xiaofei ZHENG Yuyi LI Peiqiang LI Jianxing |
| author_facet | DENG Huiqiong ZENG Fangan ZHANG Xiaofei ZHENG Yuyi LI Peiqiang LI Jianxing |
| author_sort | DENG Huiqiong |
| collection | DOAJ |
| description | A multi-objective prevention strategy for grid cascading failures based on the screening of vulnerable branches is proposed in this paper for the phenomenon of cascading failures triggered by line faults in power systems. Firstly, an improved line safety index and system safety index are proposed, and the Thiel entropy index is introduced to assess the vulnerability of each line in the power system to quantify the impact on grid operational safety after a line fault being withdrawn from the operation. Then, several branches that have a seriously negative impact on grid operational safety after an initial fault being withdrawn from the operation are screened according to the line vulnerability ranking to establish a set of expected incidents. Finally, a cascading failures prevention and control model for power systems is established which takes into account the system safety index and grid voltage stability, as well as the asility of coping with various initial fault scenarios. The model is solved by using the non-dominated sorting genetic algorithm-Ⅱ (NSGA-Ⅱ). The simulation analysis based on the IEEE 39-node system shows that the proposed prevention strategy leads to a safe and reasonable generator output solution, and it demonstrates the importance of line load factor differences in the identification of vulnerable lines. |
| first_indexed | 2024-04-09T21:22:53Z |
| format | Article |
| id | doaj.art-9095e06a7bd2426699b8d8a25e7fa2a0 |
| institution | Directory Open Access Journal |
| issn | 2096-3203 |
| language | zho |
| last_indexed | 2024-04-09T21:22:53Z |
| publishDate | 2023-03-01 |
| publisher | Editorial Department of Electric Power Engineering Technology |
| record_format | Article |
| series | 电力工程技术 |
| spelling | doaj.art-9095e06a7bd2426699b8d8a25e7fa2a02023-03-28T03:31:10ZzhoEditorial Department of Electric Power Engineering Technology电力工程技术2096-32032023-03-0142222323110.12158/j.2096-3203.2023.02.026220315336A multi-objective prevention strategy for grid cascading failure based on vulnerable lines screeningDENG Huiqiong0ZENG Fangan1ZHANG Xiaofei2ZHENG Yuyi3LI Peiqiang4LI Jianxing5School of Electronic, Electrical Engineering and Physics, Fujian University of Technology, Fuzhou 350118, ChinaSchool of Electronic, Electrical Engineering and Physics, Fujian University of Technology, Fuzhou 350118, ChinaSchool of Electronic, Electrical Engineering and Physics, Fujian University of Technology, Fuzhou 350118, ChinaSchool of Electronic, Electrical Engineering and Physics, Fujian University of Technology, Fuzhou 350118, ChinaSchool of Electronic, Electrical Engineering and Physics, Fujian University of Technology, Fuzhou 350118, ChinaSchool of Electronic, Electrical Engineering and Physics, Fujian University of Technology, Fuzhou 350118, ChinaA multi-objective prevention strategy for grid cascading failures based on the screening of vulnerable branches is proposed in this paper for the phenomenon of cascading failures triggered by line faults in power systems. Firstly, an improved line safety index and system safety index are proposed, and the Thiel entropy index is introduced to assess the vulnerability of each line in the power system to quantify the impact on grid operational safety after a line fault being withdrawn from the operation. Then, several branches that have a seriously negative impact on grid operational safety after an initial fault being withdrawn from the operation are screened according to the line vulnerability ranking to establish a set of expected incidents. Finally, a cascading failures prevention and control model for power systems is established which takes into account the system safety index and grid voltage stability, as well as the asility of coping with various initial fault scenarios. The model is solved by using the non-dominated sorting genetic algorithm-Ⅱ (NSGA-Ⅱ). The simulation analysis based on the IEEE 39-node system shows that the proposed prevention strategy leads to a safe and reasonable generator output solution, and it demonstrates the importance of line load factor differences in the identification of vulnerable lines.https://www.epet-info.com/dlgcjsen/article/abstract/220315336cascading failuretheil entropyvulnerable linesvoltage stabilitypreventive controlnon-dominated sorting genetic algorithm-ⅱ(nsga-ⅱ) |
| spellingShingle | DENG Huiqiong ZENG Fangan ZHANG Xiaofei ZHENG Yuyi LI Peiqiang LI Jianxing A multi-objective prevention strategy for grid cascading failure based on vulnerable lines screening 电力工程技术 cascading failure theil entropy vulnerable lines voltage stability preventive control non-dominated sorting genetic algorithm-ⅱ(nsga-ⅱ) |
| title | A multi-objective prevention strategy for grid cascading failure based on vulnerable lines screening |
| title_full | A multi-objective prevention strategy for grid cascading failure based on vulnerable lines screening |
| title_fullStr | A multi-objective prevention strategy for grid cascading failure based on vulnerable lines screening |
| title_full_unstemmed | A multi-objective prevention strategy for grid cascading failure based on vulnerable lines screening |
| title_short | A multi-objective prevention strategy for grid cascading failure based on vulnerable lines screening |
| title_sort | multi objective prevention strategy for grid cascading failure based on vulnerable lines screening |
| topic | cascading failure theil entropy vulnerable lines voltage stability preventive control non-dominated sorting genetic algorithm-ⅱ(nsga-ⅱ) |
| url | https://www.epet-info.com/dlgcjsen/article/abstract/220315336 |
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