1 Finding K Contingency List in Power Networks using a New Model of Dependency Joydeep Banerjee1, Anamitra Pal2, Kaustav Basu1, Malhar Padhee2, Arunabha Sen1 1School of Computing, Informatics and Decision System Engineering 2School of Electrical, Computer and Energy Engineering Arizona State University Tempe, Arizona, USA Email: fjbanerje, kbasu2,
[email protected], anamitra.pal, kbasu2,
[email protected] Abstract—Smart grid systems are composed of power and analysis under this assumption does bring into effect the communication network components. The components in either failure of PMUs. PMUs are directly dependent for power network exhibit complex dependencies on components in its on the associated power network entity. Hence failure of a own as well as the other network to drive their functionality. power network entity would make the associated PMU non- Existing, models fail to capture these complex dependencies. operational. A brief description of the underlying analysis is In this paper, we restrict to the dependencies in the power network and propose the Multi-scale Implicative Interdependency provided. The power network entities can be broadly cate- Relation (MIIR) model that address the existing limitations. A gorized into – Generation Bus, Load Bus, Neutral Bus and formal description of the model along with its working dynamics Transmission Lines. Consider a scenario in which there is and a brief validation with respect to the 2011 Southwest blackout an initial trip of a transmission line. This would cause some are provided. Utilizing the MIIR model, the K Contingency List power to be re-routed through other lines to satisfy the load problem is proposed. For a given time instant, the problem solves demands.