Application of the controllable series compensator in damping power system oscillations

In the paper, the application of the controllable series compensator (CSC) in damping power system oscillations is investigated on the basis of the Phillips-Heffron model, which is established for a general n-machine power system. The capability of the CSC damping control to provide damping to the power system is analysed in terms of its damping torque contribution both for single-machine infinite-bus and multimachine power systems. Brief guidelines for the design of the CSC damping controller are given and demonstrated on sample power systems