Simultaneous tuning of power system damping controllers using genetic algorithms

This paper presents a method that simultaneously tune multiple power system damping controllers using Genetic Algorithms (GA's), Damping controller st ructures are assumed to be fixed consisting basically of lead-lag filters. The tuning method takes robustness into consideration as it guarantees syst em stabilization over a prespecified set of operating conditions. Modified GA operators are used in the simultaneous optimization of both phase compen sations and gain settings for the stabilizers. The method is applied for gl obal PSS tuning to the well-known New England system and to the coordinated tuning of 22 PSS's in a 1762-bus modified equivalent south-southeastern Br azilian system.