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Title: Co-Simulation and Design of Cyber-Physically Secure Bulk Electric Power Grid
Committee:
Dr. Santiago Grijalva, ECE, Chair , Advisor
Dr. Maryam Saeedifard, ECE
Dr. Raheem Beyah, ECE
Dr. Thomas Habetler, ECE
Dr. Masoud Nazari, Cal Tech
Abstract:
The objective of this research is to develop techniques and tools for modeling, simulating, and characterizing cyber-physical security attacks in Bulk Electric Power Systems. The work done in this research is divided into two folds: (1) Developed a graph-based attack propagation model that simulates a bad data injection attack and executes a heuristic defense strategy using power system state estimation. This technique captures how bad data injection attacks propagate in power delivery systems (2) Designed, prototyped, tested and evaluated a co-simulation software tool capable of modeling, simulating and assessing bulk electric power grid cyber-physical security through a co-simulation design framework. Tying the cyber layer and power layer together, we develop cyber-physical security metrics that can monitor the real-time security of cyber-physical electric power grid during a cyber-physical attack. The cyber-physical security metrics are evaluated to determine and fully characterize the effect of a bad command injection attack. The co-simulator was tested on two 24-Bus, 14-substation bulk electric power system test cases and verified for performance and functionality. Results from both the bad data injection and bad command injection experiments indicate that modeling and simulation of cyber-physical security attacks holds promise as a way of studying and understanding how cyber-physical security attacks in bulk electric system affect system components. Additionally, the results suggest the implementation of cyber-physical security assessment modules in existing control systems to manage such attacks when they occur on Bulk Electric Power Systems in the real world.
