Decoupling load dynamics to prevent power system collapse

With the increasing use of constant power loads in power systems, the impact of the loads on the dynamic behavior of the system cannot be ignored. This paper introduces a power buffer configuration based on the boost converter topology. The power buffer functions to decouple the effects of upstream fault disturbance in the power system from the loads, so as to mitigate the negative influence of the constant power loads on system stability. Furthermore, the power buffer enhances the operation of the loads. Appropriate control schemes for the power buffer are proposed and simulation results are given to verify the validity of the power buffer concept