Determining Wide-area signals and locations of regulating devices to damp inter-area oscillations through eigenvalue sensitivity analysis using DIgSILENT programming language

Abstract

This chapter introduces the concept of eigenvalue sensitivity to analyse the installation location and feedback signals of damping regulating devices using DIgSILENT Programming Language. A state-space representation of the linearized system is estimated by dynamic simulations and used to provide two indices based on mode controllability and mode observability. By inspection of these indices, the number of location/signal candidates is reduced, decreasing the computational cost of modal analysis and time-domain simulation for the final selection of regulating device location and feedback signals. This approach is applied to determine the location/signal of a Battery Energy Storage (BES) regulating the inter-area oscillation between the Northern Chile Interconnected System (NCIS) and the Argentinian Interconnected System (AIS).