Impediments and model for network centrality analysis of a renewable integrated electricity grid

© 2014, Springer Science+Business Media Singapore. Inclusion of renewable energy changes the power flow direction of the trans- mission grid, resulting in a bidirectional flow model of the power transmission systems. The changing nature of the grid demands for new and improved techniques to analyze the vulnerability of the power grid. In this chapter, a method for identifying critical nodes for smart and bulk power transmission grid environment is presented. A new model based on bidirectional power flow is considered. Three different models of power system based on complex network framework are analyzed. Applicability of these methods in smart grid environment is evaluated. The consequence of removing critical nodes found from the analysis is discussed. Four measures of impact based on topological and electrical characteristics are tested. The efficacy of bidirectional model is studied through rank similarity analysis.