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Impact of Higher-Order Structures in Power Grids' Graph on Line Outage Distribution Factor by Sadik, Nafis; Narimani, Mohammad Rasoul is a scholarly article available to read on EtoBox.

What is Impact of Higher-Order Structures in Power Grids' Graph on Line Outage Distribution Factor about?

Power systems often include a specific set of lines that are crucial for the regular operations of the grid. Identifying the reasons behind the criticality of these lines is an important challenge in power system studies. When a line fails, the line outage distribution factor (LODF) quantifies the changes in power flow on the remaining lines. This paper proposes a network analysis from a local structural perspective to investigate the impact of local structural patterns in the underlying graph of power systems on the LODF of individual lines. In particular, we focus on graphlet analysis to determine the local structural properties of each line. This research analyzes potential connections between specific graphlets and the most critical lines based on their LODF. In this regard, we investigate N-1 and N-2 contingency analysis for various test cases and identifies the lines that have the greatest impact on the LODFs of other lines. We then determine which subgraphs contain the most significant lines. Our findings reveal that the most critical lines often belong to subgraphs with a less meshed but more radial structure. These findings are further validated through various test cases.

Author

Sadik, Nafis; Narimani, Mohammad Rasoul

Published

2023

Language

EN