Adjacent Graph Based Vulnerability Assessment for Electrical Networks Considering Fault Adjacent Relationships Among Branches

TitleAdjacent Graph Based Vulnerability Assessment for Electrical Networks Considering Fault Adjacent Relationships Among Branches
Publication TypeJournal Papers
Year of Publication2019
AuthorsZang, T., Lei J., Wei X., Huang T., Wang T., Pérez-Jiménez M. J., & Lin H.
Journal TitleIEEE Access
Volume7
Pages88927-88936
Abstract

Security issues related to vulnerability assessment in electrical networks are necessary for operators to identify the critical branches. At present, using complex network theory to assess the structural vulnerability of the electrical network is a popular method. However, the complex network theory cannot be comprehensively applicable to the operational vulnerability assessment of the electrical network because the network operation is closely dependent on the physical rules not only on the topological structure. To overcome the problem, an adjacent graph (AG) considering the topological, physical, and operational features of the electrical network is constructed to replace the original network. Through the AG, a branch importance index that considers both the importance of a branch and the fault adjacent relationships among branches is constructed to evaluate the electrical network vulnerability. The IEEE 118-bus system and the French grid are employed to validate the effectiveness of the proposed method.

Keywordsadjacent graph, branch importance index, complex network theory, Complex networks, electrical network, fault adjacent relationships, French grid, IEEE 118-bus system, Indexes, Load modeling, Loading, Measurement, network operation, network theory (graphs), power grids, power system faults, power system security, Transient analysis, Vulnerability
DOI10.1109/ACCESS.2019.2926148