Adjoint Network Sensitivity Based State Variable Evaluation for Large Scale Contingency Events
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Abstract This paper addresses the determination of the power system state variables, the complex bus voltages, based on the concept of adjoint networks and Tellegen's theorem. First-order sensitivities are derived and accuracy enhancements proposed to extend the validity of the state variable evaluations to cases where large-scale perturbations occur in the network. Practical implementation issues are addressed. Finally, numerical examples are provided for illustration purposes.