Sensitivity-Based Critical Measurement Identification of State Estimation: From A CPS Perspective

Abstract

The state estimation (SE) is the basis of the energy management system (EMS) to estimate the system operating status. As cyber security issues in smart grids become more and more prominent and smart grids become cyber-physical systems (CPS), it is essential to analyze how the disturbance will affect the results of state estimation. Based on cyber-physical model for smart grids and cyber-physical sensitivity, this paper proposes a sensitivity analysis method for state estimation from a CPS perspective so that the critical measurement can be identified.