Computer aided modeling and simulation of harmonics and interharmonics in power systems

With the increasing demand for electrical energy, the need for more reliable and quality energy has started. This concept has taken its place in the field of electrical engineering with the title of "power quality". Today, harmonic emitting elements such as power electronics, transformers, arc furnaces and converters used in industry have caused the deterioration of power quality and as a result, they have led us to get rid of harmonics. In order to provide quality electrical energy, some criteria such as continuity of energy, stability of voltage and frequency, proximity of power factor to 1, balance of phase voltages and remaining harmonic amounts in voltage should be taken into consideration. In this thesis study, in order to analyze the harmonics and interharmonics in the power system and to see the effect on the system, the serial active power filter was modulated and simulated against different nonlinear loads in the MATLAB/Simulink program. In order to eliminate the harmonics and interharmonics in the system and to see their response to filtering, the results are shown with the FFT analysis program. The results of harmonics and interharmonics in the power system with nonlinear loads before and after filtering have been analyzed and examined. As a result of the examination, suggestions were made regarding the measures to be taken.