Research On Electric Power System Harmonics And Its Influences On Electric Energy Measurement

The cause of power supply system harmonic has been analyzed in this paper. These models have been implemented using the MATLAB/SIMULINK in order to simulate the three-phase saturated transformer, three-phase bridge rectifier, model SS1 electrical locomotive and electric arc furnace, and discuss the solution of eliminating and restraining harmonic. At the same time, a mathematical nonlinear model is developed to simulate the performance of an induction watt-hour meter for non-sinusoidal voltage and current waves. And corresponding simulation has also been developed using the MATLAB/SIMULINK environment. The simulation results are compared with actual data in order to validate the accuracy of the model. Finally, the performance of an induction watt-hour meter is analyzed accounting for distorted wave, and the effect of harmonic on the accuracy of the active power measurement is studied quantitatively. Chen Ming (Electrical Engineering)Directed by Prof. Li Heming...