Residue-based coordinated selection and parameter design of multiple power system stabilizers (PSSs)

Residue method is a commonly used approach to design the parameters of a power system stabilizer (PSS). In this paper, a residue identification method is adopted to obtain the system residues for different input-output pairs, using the system measurements data from time domain simulations. Then a coordinated approach for multiple PSS selection and parameter design based on residue method is proposed and formatted as an optimization problem. Particle swarm optimization (PSO) is adopted in this coordination process to find suitable parameters for PSSs so that the dominant oscillation modes can be well damped; while locations and input signals of PSSs are selected to keep PSS outputs small. The IEEE 39-bus New England system model as the test system is built in DIgSIELNT PowerFactory 14.0, in which the proposed coordination method is validated by time domain simulations and modal analysis.