Problems of Power Factor Correction in Power Supply Systems with Higher Harmonics Sources

Vladimir Govorun,Aliya Zhumadirova,Oleg Govorun,Vadim Markovskiy,V.A Golenishchev-Kutuzov

doi:10.1051/e3sconf/202128801019

Vladimir Govorun, Aliya Zhumadirova + Show 3 more

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https://doi.org/10.1051/e3sconf/202128801019

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Abstract

In this paper, on the basis of simulation modeling, an algorithm for studying the current resonance that occurs in the power supply system with a chaotic change of the load power and variation of reactive power compensation degree, in the presence of consumers with a nonlinear current-voltage characteristic is proposed. It is shown that overloading of capacitor banks can occur in a wide frequency range, close to the resonant frequency. The proposed algorithm determines all possible frequencies at which an increase of currents in capacitor banks can occur above the permissible values in parallel resonance. The purpose of the proposed work: to show in what operating modes of the enterprise power supply system an overload of capacitors by currents of higher harmonics can occur when the load power changes and the degree of reactive power compensation varies.

Highlights

IntroductionThe widespread introduction of power electronic converters into production has given rise to the problem of their negative impact on the quality of electricity
One of the most actual problems of modern power supply is to improve the quality of electricity, since the consumption of electricity is significantly reducing, the reliability of power supply systems and the production process is improving.The widespread introduction of power electronic converters into production has given rise to the problem of their negative impact on the quality of electricity
Let us consider in more detail the reasons for the occurrence these reactions of power supply system to oscillations of higher harmonics and possible ways to solve them

Summary

Introduction

The widespread introduction of power electronic converters into production has given rise to the problem of their negative impact on the quality of electricity. The reason for this was the nonlinear and impulsive nature of the processes of converting electricity by means of key elements that discretely control the flows of electrical energy. As a result of their operation, currents are distorted in AC circuits and, in addition to an increase of active power consumed from the network, reactive power increases, due to the phase shift of current and voltage basic harmonics and the distortion power. The order of higher harmonics is determined by the formula n = mk 1, where m is the number of rectification phases; k is a natural series of numbers.

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