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14 February 2022 Identification of fragile lines based on improved electrical betweenness
Yong Zhou, Chaoyang Chen, Ming Lu, Zuguo Chen
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Proceedings Volume 12161, 4th International Conference on Informatics Engineering & Information Science (ICIEIS2021); 121610R (2022) https://doi.org/10.1117/12.2627198
Event: 4th International Conference on Informatics Engineering and Information Science, 2021, Tianjin, China
Abstract
This paper proposes an improved electrical betweenness method to identify vulnerable lines in the power grid. This method is based on the line power flow obtained after power flow calculations, which overcomes the limitation of the previous methods assuming that electrical power flow flows along the shortest path, and simplifies the steps of each unit power injection. Taking into account the directionality of the electrical power flow of the power grid, the proposed percentage of power loss flow is used as an indicator to evaluate the stability of the power grid, and the dynamic impact on the power grid after the removal of generators and load nodes are cut off. Simulation analysis on IEEE 39 and 118-bus system shows that the total active power flow of the grid will decrease rapidly if the high improved electrical betweenness is deliberately attacked, which verifies the feasibility and effectiveness of the method to identify vulnerable lines.
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Yong Zhou, Chaoyang Chen, Ming Lu, and Zuguo Chen "Identification of fragile lines based on improved electrical betweenness", Proc. SPIE 12161, 4th International Conference on Informatics Engineering & Information Science (ICIEIS2021), 121610R (14 February 2022); https://doi.org/10.1117/12.2627198
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KEYWORDS
Failure analysis
Electrical engineering
Lutetium
Reliability
Safety
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