Design nonlinear robust damping controller for static synchronous series compensator based on objective holographic feedback–H∞

Considering the strong nonlinearity of power oscillation in power system containing static synchronous series compensator and nonlinear factors, a novel power oscillation damping controller that exhibits nonlinearity and robustness is proposed to reduce power oscillation in such systems. First, use objective holographic feedback on the system state equation to obtain system model. Second, nonlinear factors and external disturbances are estimated using direct feedback linearization to achieve linearization of the nonlinear model. Third, HN equation should be selected. Finally, a power oscillation damping controller of static synchronous series compensator is designed on direct feedback linearization, objective holographic feedback theory–HN. The controller exhibits good dynamic performance and robustness. Simulations on four-generator two-area system are conducted under various disturbances to prove the effectiveness and robustness of the proposed damping control method.