INVESTIGATION OF THE INFLUENCE OF THE TRANSFORMER OF A SERIES ACTIVE FILTER ON THE QUALITY OF VOLTAGE
DOI:
https://doi.org/10.15588/1607-6761-2018-1-10Keywords:
compensator, power active filter, transformer, Frize theoryAbstract
Purpose. Investigate the features of using a series power transformer for the implementation of longitudinal compensation.
Methodology. Methods of solving systems of differential equations of the first order, methods of matrix transformations, methods of numerical simulation, methods of calculating the active part of Frieze power, methods of the theory of transformation of coordinate systems.
Findings. The functional scheme of the successive power active filter is realized in the implementation of longitudinal compensation, the connection of the parameters of the transformer with the parameters of the mode is investigated, the processes that take place in the transformer are considered, a method for determining the signal of the control of the successive filter is developed, in the visual programming environment a model of the simplified system of electricity consumption has been developed, researches, on the basis of which analysis, the efficiency of application of the proposed solution according to the level of voltage on the invoice is shown ancestry A series of experiments with a change in the active load power was carried out to assess the impact of the transformer on the load voltage. The conclusions of the influence of the parameters of the active filter transformers on the load voltage are formulated.
Originality. Non-compliance with the quality of energy indicators leads to economic losses, reduced reliability of operation of electric networks and violation of technological processes, increase of additional losses in networks and elements of electrical equipment, shortening of service life of electrical power equipment of power systems. Longitudinal compensation is one of the solutions for ensuring the quality of electricity. Compensation provides for increasing the dynamic stability of the transmission line and the stability of the main network voltage. On the basis of the analysis of known works, it has been established that passive compensators with a permanent structure are less satisfied with the requirements for maintaining the quality of electricity. As a result, controlled filter compensating devices are developed and implemented - power active filters. The principle of the compensator - constantly creates harmonic voltages that exactly match the harmonic components generated by the load. The distortion is already compensated, already present in the power supply system. As a result, the voltage remains sinusoidal. The compensatory properties of the active filter depend on the algorithm for determining the control signal. With the use of the Frize power theory, a certain sequence of the synthesis of a control signal by a series active active filter is proposed.
Practical value. A certain sequence of synthesizing the control signal of the compensator has been created, the effect of the power active filter transformers has been investigated for the realization of longitudinal compensation.
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Copyright (c) 2018 BONDARENKO S. S., BIALOBRZHESKYI О. V., VLASENKO R. V.
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