Three-Phase Unbalanced Treatment Scheme Based on High-Speed Power Line Carrier

Huang, Rui; Chen, Jianhua; Liu, Mouhai; Liu, Zhiguo; Yu, Minqi

doi:10.1088/1742-6596/1449/1/012078

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…Numerous publications on the considered networks operating modes study are devoted to their functioning consideration in low power quality conditions [1][2][3][4][5][6][7][8]. Many years research in this area have allowed to establish that the most characteristic and objective 0.38 kV networks operation modes is the asymmetric mode (AM) [9][10][11][12][13][14]. On the one hand, these modes lead to an increase in unproductive electricity losses, including the fire hazardous situations possibility [15][16], on the other hand, to a significant decrease in the electricity quality characteristics, which leads to inadequate electric receivers operation.…”

Section: Introductionmentioning

confidence: 99%

The Power Quality Improving and its Losses Reducing with Balancing Devices

Наумов

Podyachikh

Бастрон

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The method, algorithms, modeling, calculations and analysis the 0.38 kV electric network operation with unbalancing power consumption are considered. It is noted that the 0.38 kV electric networks, being electric low observability networks, are largely characterized by low power quality, which is accompanied by additional losses. An electric network model with a distributed load is presented. The current and voltage asymmetry indicators calculating method is developed, and the specialized balancing device parameters are determined. Bas ed on the obtained expressions, using Matlab technologies, the calculating asymmetric modes program was developed. The studied indicators were calculated for the created electric network model with symmetric and asymmetric loads. The balancing device influence degree on the quality indicators stabilization and the electrical energy additional losses reduction is established.

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Section: Introductionmentioning

confidence: 99%

The Power Quality Improving and its Losses Reducing with Balancing Devices

Наумов

Podyachikh

Бастрон

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…At the same time, the calculation methods approbation and programs created on the mathematical modeling basis, directly for the analysis electrical netw orks operating modes existing, is considerable interest. Numerous studies devoted to the operating modes modeling [1][2][3][4][5][6][7], as well as studies related to the electrical energy parameters measurement and calculation in operating 0.38 kV electrical networks [8][9][10][11][12][13][14] show that these networks operating modes are objectively…”

Section: Introductionmentioning

confidence: 99%

About Electric Energy Additional Losses Reduction at the Phase Currents Unbalancing in the 0.38 kV Operating Networks

Наумов

Podyachikh

Tretyakov

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The materials of operation unbalancing modes studies in operating distribution electric 0.38 kV networks are presented. For research, electric energy parameters systematic measurements materials and its indicators characterizing the power quality have been used. The measurements were made by an electric grid organization order that provides to facilities power supply in the Irkutsk region. To assess the unbalancing modes, in accordance with the developed calculating the currents and voltages unbalance methods, the program “Imbalance-2" was created to determine these indicators. As a minimizing additional losses means, a special shunt-balancing device is used, which has the lowest possible zero-sequence currents resistance, which automatically changes its parameters. The program provides the device parameters determination in accordance with the changing current unbalance level at any time moment. Based on the created algorithm, the indicators characterizing the power quality, as well as additional power and energy losses caused by this unbalance are calculated and analyzed. It is established that the power quality meets the State Standard requirements, but the additional losses level is quite high. The full power total losses in the individual electrical network elements have been determined and the balancing device efficiency degree to reduce these losses are established. The used balancing device economic efficiency is determined.

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“…Recently, quite a lot of the electrical networks analysis operation publications, including low voltage, are based on the operating modes their modeling [1][2][3]. At the same time, carrying out in operating electrical networks measurements using software products for the mode parameters calculating always remains an urgent task and is the most reliable way to assess the electrical networks operating modes of all voltage levels.…”

Section: Introductionmentioning

confidence: 99%

Analysis of unbalanced load low-voltage electrical networks operating modes

et al. 2021

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The article discusses distribution electrical networks 0.38 kV operating modes, feeding individual residential buildings. The electrical energy parameters measurement were certified RESURS-UF2M device carried out. The currents and voltages time diagrams based on the measurements made and using Matlab technologies were constructed. It is established that the level of phase currents unbalance is quite high and causes significant three-phase power supply system unbalance voltage accordingly. The power of quality indicators - calculations, characterizing voltage unbalance were made, which were based on the measurements and the computer program “Asymmetry” was used. As well as the additional power losses coefficient determining by the phase currents unbalance, were calculations. Time diagrams these indicators are constructed and their analysis were made. As a result, the power of quality is significantly reduced by unbalance power consumption in the studied electrical network were founded. At the same time, the additional power losses are significant increases. Specific recommendations for the normalization electrical network-operating mode are given.

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Three-Phase Unbalanced Treatment Scheme Based on High-Speed Power Line Carrier

Cited by 4 publications

References 1 publication

The Power Quality Improving and its Losses Reducing with Balancing Devices

The Power Quality Improving and its Losses Reducing with Balancing Devices

About Electric Energy Additional Losses Reduction at the Phase Currents Unbalancing in the 0.38 kV Operating Networks

Analysis of unbalanced load low-voltage electrical networks operating modes

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