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The explosive growth and diversity in industrial and residential consumers has generated major problems of the power quality in power systems. Both industry suppliers through the generation of nonsinusoidal regime and consumers with the nonlinear loads cause high disturbances in the power systems. The behavior of nonlinear circuit elements is analyzed in this paper by means of simple mathematical...
In this paper it will be presented a case study on the calculation of harmonic distortion generated by a wind farm through its simulation in the time and frequency domain. The simulated wind farm uses multipolar synchronous generators, and their connection to the power grid is made by frequency converters. The obtained results in the time domain will be compared with data obtained through simulation...
The three-phase voltage and current waveforms from a Power System (PS) are not considered pure sinusoids due to the presence of, among others, the harmonic distortion. This work presents an approach based on the Particle Swarm Optimization (PSO) method for the harmonic component estimation in a PS. PSO is a technique of search/optimization that models the social behavior observed in many species of...
This paper presents a novel method for determining the contribution of harmonic distortion generated by utility and customer in a distribution system. The method considers modeling the customer side in terms of RLC components and the whole system is represented by a Norton equivalent circuit. Voltage and current at the point of common coupling are then measured to calculate the customer and utility...
An AC arc furnace is an unbalanced, nonlinear and time varying load, which can cause many problems to power system quality. Different studies on arc furnaces harmonics analysis can be found in the bibliography on the topic; however, it is very difficult obtain an exact model that takes into account all the parameters that have influence on the process, therefore it is necessary to take measurements...
The intensive use of power converters and other non-linear loads in industry and by consumers in general, has produced an increasing deterioration of the power systems voltage waveforms. The presence of harmonic distortion in power lines results in greater power losses in the distribution systems, interference problem in communication systems and, sometimes, in operation failures of electronics equipments...
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