The objectives of the analysis presented in this section are to present a
unified framework for the design of damping controllers on series FACTS
devices such as TCSC, SSSC and series converters in UPFC. The analysis
is based on a simplified model that enables the derivation of control laws
and formulation of indices to evaluate the effectiveness of location of the
controllers. The analysis can be validated using case studies with detailed
system models [15,33].