Abstract
In this paper, a coordinated control of doubly fed induction generator (DFIG) wind turbine and static var compensator (SVC) is proposed for the robust stabilization of interconnected power system. By modulating the reactive power output of DFIG and SVC, the power oscillation can be damped. To implement this control, the power oscillation damper (POD) with the 2nd-order lead-lag compensator is added to the voltage controller of DFIG and SVC. The mixed H 2 /H ∞ control method is adopted to formulate the parameters optimization problem of POD. Solving the problem by an improved backtracking search algorithm (BSA), the optimal parameters of POD can be achieved. Simulation results in the two-area four-machine power system confirm the robustness and damping effect of the proposed coordinated control.
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