Integration of Renewable Energy Resources and Implications: A Review

In previous years, electricity was produced by rotating and spinning the turbines and motors that drive the hydro-power plants and the inertia created in the turbines. To satisfy the increasing demand for electricity because of rapid urbanization, renewable energy is integrated into the power system. With more advancements in electronic devices and the expansion of new technologies, renewable energy is seen being integrated into the distribution system or directly into the grid. However, large-scale integration of renewable energy into the power system came with power quality problems, e.g., frequency fluctuations, harmonics, malfunctions of the protection system, low power factor, etc. The issues related to frequency control are thoroughly discussed and a comparison is made with latest research in this paper. So, the studies related to stabilizing frequency issues that include frequency regulation, voltage surges, and frequency profile improvement and their solutions are examined with critical analysis.