Impact of Load Variations on Power System Performance under High Penetration of Wind Generation

Role of Renewable Energy Resources (RES) is increasing day by day due to continuously depleting fossil fuels. Moreover, to make environment-friendly power generation, RES is one of the best options. According to the International Renewable Energy Agency (IRENA), the number of countries which aim their grids synchronized with RES has reached 180. This increasing trend of RES integration is causing new vulnerabilities in power system. This paper studies the impact of an increase in load under the different percentage levels of wind generation. Six cases are discussed, each with 10% increase in wind penetration along with 5% increase in load at every step. Modified IEEE-14 bus system is analyzed under various scenarios to evaluate the minimum voltage level, minimum angle, active and reactive power loss in the power system. Mat-Power and MATLAB are used to evaluate the power system. Results show that 20-30% wind generation penetration has a good impact on power system's performance. However, further increase in wind generation results in more power losses.