Research on the distribution of distortion of power generation on the area of electronic consumption with a welding equipment

A model of the power consumption system at a site of an industrial enterprise, where there are consumers with linear and nonlinear characteristics is depicted in this work. In this case, linear customers include lathes and vertical drilling machines. A non-linear consumer is an AC welding transformer. This distribution of consumers was made taking into account the argument that the nonlinearity that is caused by the operation of industrial machines is relatively small, compared with the nonlinearity that the welding transformer creates in its work. A working model was created in the visual programming package based on the scheme for replacing the power supply system of the workshop. This model makes it possible to obtain instantaneous values of the parameters of the quality indices of electrical energy of the investigated section of the shop. When carrying out the research using known electric power parameters, an assessment of the welding installation influence on the electrical energy quality indicators of the section of the shop of an industrial enterprise was made. The instantaneous powers of the network node have been estimated. An estimation of the influence of these instantaneous powers on the na-ture of the step-down transformer operation has been made. When studying the mode of the power consumption system without the use of filter compensating devices, a significant distortion in the current of the network, voltage and power can be observed. At the same time, using a single-frequency filter, on the high-voltage side of the welding transformer, a significant reduction in the total distortion of the current is obtained which influences on the change in the power parameter of the electric energy of the network. In this case, there is a definite increase in the constant component of the instantaneous power over one of the phases and its main harmonic