TCSC controller design for damping interarea oscillations

摘要

The thyristor controlled series compensator (TCSC), a prominentnFACTS device, can rapidly modulate the impedance of a transmission line,nresulting in improvement of power system performance. The purpose of thenwork reported in this paper is to design a controller to damp interareanoscillations. The authors have applied the residue method to linearizednpower system equations and obtained a generalized form which is suitablenfor different controller input/output channels and therefore suitablenfor different control devices. This method, together with modalnsensitivities, is applied to TCSCs to determine the location, feedbacknsignal and controller design. The damping result is illustrated byncomparing changes in damping ratio and identifying the increase ofntransfer capacity