Analysis of distortion-related electric power losses in aluminum industry

Shklyarskiy, Yaroslav; Shklyarskiy, A. Ya.; Zamyatin, Egor O.

doi:10.17580/tsm.2019.04.11

Cited by 10 publications

(4 citation statements)

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“…There are various models of nonlinear electrical loads, which can generally be classified into simulation models based on models of semiconductor elements being a part of them [14][15][16]; in the form of current sources at harmonic frequencies [17][18][19]; in the form of volt-ampere characteristics obtained by approximation according to various equations [20][21][22]; in the form of nonlinear impedances [23][24][25]; based on time-domain, frequency-domain, or time-frequency modeling approaches [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Computation of Nonlinear Load Harmonic Currents in the Presence of External Distortions

et al. 2022

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This paper deals with the issues of computation of the nonlinear load harmonic currents in the presence of external distortions based on the real measurements with help of passive harmonic. Such values are necessary when modeling an equivalent nonlinear load as current sources in the presence of external distortions. The passive filter allows to separate external and internal distortions, which is necessary when determining the harmonic currents of a single consumer. The influence of various parameters on the computation of harmonic currents of a nonlinear load, such as the parameters of a passive harmonic filter, the impedance of the power supply transformer, the load parameters of the consumer, taking into account the harmonic generation from the grid side, and from the consumer side, is considered. It is shown that an external source of distortion has practically no effect on the error in estimating the harmonic current magnitudes of a nonlinear load. The obtained simulation results were confirmed experimentally on a laboratory test bench. Recommendations for the selection of passive harmonic filter parameters have been developed to minimize the error in determining the harmonic current magnitudes of a nonlinear load.

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Section: Introductionmentioning

confidence: 99%

Computation of Nonlinear Load Harmonic Currents in the Presence of External Distortions

et al. 2022

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“…Due to the rise of harmonic-producing loads, harmonic distortion has become one of the primary power quality concerns [1], [2]. Harmonic distortion, which causes voltage and current waveforms to be distorted and contain various harmonic orders, is one of the most common types of disturbances [3]- [6].…”

Section: Introductionmentioning

confidence: 99%

Identification of harmonic source location in power distribution network

Jopri

Skamyin

Manap

et al. 2022

IJPEDS

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This paper presents the experimental set-up of identification of harmonic source location in the power distribution network using time-frequency analysis, known as S-transform (ST) at the point of common coupling (PCC). S-transform offers high frequency resolution in analyzing the low frequency component and able to represent signal parameters in time-frequency representation (TFR) such as TFR impedance (ZTFR). The proposed method is based on IEEE Std. 1459-2010, ST, and the significant relationship of spectral impedances components (ZS) that been extracted from the ZTFR, consist of the fundamental impedance (Z1) and harmonic impedance (Zh). This experiment was conducted out on an IEEE 4-bus test feeder with a harmonic producing load in numerous different scenarios. The experimental was tested and verified for three consecutive months. The findings of this study reveal that the proposed method provides 100 percent correct identification of harmonic source location.

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“…Transition resistance is a very important qualitative parameter of any connection's condition [5], affecting the reliability of switching devices [6]. The higher the value of this parameter, the greater the loss and heating of the conductive parts [7][8][9]. This reduces the life of the circuit breakers and their performance [10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Transient Contact Resistance of Composite Copper-Graphite Material Obtained Using Plasma Spraying Technology

Derevyankin

Frolov

2021

MSF

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The article is devoted to the analysis of the internal structure and properties of a copper-graphite coating applied to a copper electrode. The article provides a calculation of the transient contact resistance of electrodes with a coating obtained using plasma spraying technology. Copper-graphite powder with high arc resistance was used as a spraying substance. Coated electrodes were tested for erosion resistance by an arc at currents of several kiloamperes. The aim of the work is to determine the effect of the composition and internal structure of the coating on the transient processes in the contact gap.

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Analysis of distortion-related electric power losses in aluminum industry

Cited by 10 publications

References 0 publications

Computation of Nonlinear Load Harmonic Currents in the Presence of External Distortions

Computation of Nonlinear Load Harmonic Currents in the Presence of External Distortions

Identification of harmonic source location in power distribution network

Analysis of the Transient Contact Resistance of Composite Copper-Graphite Material Obtained Using Plasma Spraying Technology

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