Research on damping control system of optimized coordination of AGC and AVC

Based on generation rescheduling, we can damp low-frequency oscillation effectively. In this paper, the authors calculate the three kinds of sensitivities used later in this paper with both analytic method and numerical method. Then the authors give a brief introduction on static HAGVC system as well as static damping HAGVC system, and draw a control diagram of the system. Static damping HAGVC system can not only eliminate some weak damping modes, but also overcome the negative interaction between traditional AGC and AVC control, as the coupling between active and reactive power become much stronger, to coordinate AGC and AVC control systems effectively. As to the top level of the static damping HAGVC system, a diagram about control flow as well as the function of each control module based on cross iteration optimization algorithm is given in this paper. Finally, the simulations of the IEEE 5-machine 14-bus system in five situations indicate the validity of the proposed theory.