Energy estimation of parameters of reactive power compensator for nonlinear loads in steady mode
2019
Vorotnikov, I., Stavropol State Agrarian Univ. (Russian Federation) | Mastepanenko, M., Stavropol State Agrarian Univ. (Russian Federation) | Gabrielyan, S., Stavropol State Agrarian Univ. (Russian Federation) | Shunina, A., Stavropol State Agrarian Univ. (Russian Federation)
Studies on determination of reactive power, which have been conducted for more than a century, basically boil down to attempts to apply non-sinusoidal currents and voltages methods and concepts tested for the case of sinusoidal functions. The massive practical use of various semiconductor converter systems, which lead to a notable distortion of the shape of the current and voltage curves, requires a more detailed study of the problems associated with the appearance of additional energy losses and with a sharp increase of current value in the wires with a limited increase of the net power. The intensity of these processes is usually characterized by reactive power. The problem of determination and compensation of reactive power under non-linear loads becomes more typical for power supply systems of agricultural consumers. On the one hand, distorting loads, such as frequency-controlled electric drive, luminescent lighting and irradiating equipment, pulse converters and others, appear in the equipment of enterprises of the agro-industrial complex. On the other hand, the close proximity of industrial power supply networks with a high proportion of distorting loads with agricultural networks has a significant impact on the latter in the form of transformation of distorted forms of voltages and currents. The authors of this article consider the processes in the resistive branch with a key at sinusoidal electromotive force to identify the problems associated with the definition of reactive power.
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