Dynamic voltage decoupling control of power system based on wide area measurement information

Wide area measurement system is an important step to realize online closed-loop control for power system. Focused on the disadvantages of existed dynamic voltage control, a novel dynamic voltage decoupling control model and its implementation approach based on wide area measurement information are proposed. Applying the wide area measurement information, a dynamic voltage decoupling control model is established. According to the relation of predictive voltage and current control variables derived by the method of quick single-step nonlinear predictive control, the problem of dynamic voltage control is converted to a standard quadratic programming problem in a finite horizon, which is solved to obtain optimal control strategy. Thus, the online closed-loop voltage control is implemented by the processes of predicting future voltage values, rolling optimization and real-time control. The simulation results of IEEE 11-bus system verify the feasibility and effectiveness of the proposed scheme.