Impact of Increasing Renewable Energy Sources on Power System Stability and Determine Optimum Demand Response Capacity for Frequency Control

In the last years, renewable energy sources have been increasing more and more over the world because of their benefits as environmentally friendly, clean, and abundant. But this increase led to new problems, for instance, low inertia, unstable supply, and strong estimating necessity. Therefore, power system operators and researchers consider and look for new solutions to these issues. In this study, first, the inertia of a power system under increasing RES capacity is investigated, and the effect of low inertia conditions on frequency stability is shown. Then, it is presented that frequency control with demand response can be successful by determining the optimum demand response capacity with meta-heuristic methods on the same power system.