Additional Energy Losses from Asymmetric and Non-Sinusoidal Current in an Electrical Facility and Methods of their Reduction

Tarasov, E V; Bulyga, Leonid L.; Ushakov, V. Ya.; Kharlov, N. N.

doi:10.1051/matecconf/20153701057

Cited by 5 publications

(1 citation statement)

References 2 publications

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“…Therefore, ideally, this coefficient value should be 1. In fact, the power consumption actual modes in a low-voltage electrical network is always characterized by this value significant excess, which has been proven by numerous studies [23][24][25][26][27]. For this reason, it is considerable interest to determine the electrical energy actual losses in the in-house electrical network, as well as their ratio in the total electricity consumption volume.…”

Section: Methodsmentioning

confidence: 99%

“Green technologies” elements by the individual residential buildings internal electrical networks operation

Наумов

Podyachikh

Tretyakov

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The article discusses the research results on the internal electrical networks operation of two independent individual residential buildings with a 0.38 kV voltage three-phase electrical input energy. It is established that these electrical networks operation is characterized by a significant currents and voltages unbalance level, which leads to a quality standards violation and electrical energy additional losses increase. When using the computer program “ModulHous”, which algorithm is based on the developed calculation methods, the currents and voltages unbalance calculation was performed. With the use of the MATLAB graphics editor technology, the obtained changes visualization in the currents and voltages unbalance has been implemented. The obtained diagrams analysis made it possible to establish the unbalance power consumption level and its impact on the internal power supply efficiency of the individual residential buildings. A special balancing device is proposed that automatically minimizes unbalancing flows in the internal individual dwellings electrical network. The developed software made it possible to establish the using balancing devices efficiency to improve the quality and reduce electrical energy additional losses in the considered electric networks of individual residential buildings.

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Section: Methodsmentioning

confidence: 99%

“Green technologies” elements by the individual residential buildings internal electrical networks operation

Наумов

Podyachikh

Tretyakov

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Calculation of balancing and filter compensating devices of the power supply system

Lukovenko

Кукарцев

Tynchenko

et al. 2019

J. Phys.: Conf. Ser.

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The problem of reducing the quality of electricity is increasingly arising in the process of increasing energy capacities. The decrease in the quality of electricity can be caused by many different factors that manifest themselves under certain circumstances, and therefore have different solutions for their elimination. The most acute problem is the impact of the electricity quality on the energy parameters of electrical equipment and power receivers in the metallurgical industry and on the railway. The article discusses the features of calculating the asymmetry of currents in a traction AC network. The main moments of calculating the settings of balancing devices are determined. The initial calculation data for balancing devices were taken from the dynamic parameters of one of the operating modes of a power transformer TDTNZh 40 MVA, to which two single-phase loads with a capacity of 17 MVA are connected to terminals AB and 10 MVA to terminals BC. The current of the negative sequence and the coefficient of the negative sequence are calculated, and the filter compensating device is also calculated using the parameters of the balancing device. Based on the calculations, the magnitude of the negative sequence current asymmetry was established and the calculation procedure for the balancing device connected to the traction winding of the transformer with the connection group Y/Δ-11 was implemented.

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Researching and modelling of unbalanced regimes in systems of household electric power consumers

Miroshnyk

Kovalyshyn

Bałdowska-Witos

et al. 2020

J. Phys.: Conf. Ser.

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The modelling of the operation modes of the 0.38/0.22 kV power supply systems by the Monte Carlo method using the Electronics Workbench computer program is considered, and statistical processing of simulation results and testing of the Pearson distribution law hypothesis using the Mathcad program are carried out. An analysis of existing power supply systems has been carried out and an alternative, economically feasible version of the power supply system is proposed, where consumers are powered by low power transformers mounted on supports. The performed studies showed that the variation of the load currents in the segments and the losses of electric energy in an asymmetrically loaded network of 0.38/0.22 kV are subject to the normal distribution law and that the consumers who feed on the traditional power supply system have unsatisfactory quality of electrical energy.

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Additional Energy Losses from Asymmetric and Non-Sinusoidal Current in an Electrical Facility and Methods of their Reduction

Cited by 5 publications

References 2 publications

“Green technologies” elements by the individual residential buildings internal electrical networks operation

“Green technologies” elements by the individual residential buildings internal electrical networks operation

Calculation of balancing and filter compensating devices of the power supply system

Researching and modelling of unbalanced regimes in systems of household electric power consumers

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