Influence of the energy characteristics on the electrical grid simulation

Shklyarskiy, A. Ya.; Соловьев, С. В.

doi:10.1109/meacs.2015.7414917

Cited by 4 publications

(2 citation statements)

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“…[1]. The spectrum of these currents contains harmonic components, which, passing through power lines, transformers and other elements of the power supply system, distort the voltage shape, create additional power losses, and also the components are a source of interferences [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…In the power supply system under certain conditions resonant modes are able to arise at the frequencies of different harmonics, the danger of the modes is the occurrence of sharp current surges and overvoltages [2][3][4][5]. Therefore, the study of such modes is an urgent task; the solution is being addressed by researchers from different countries [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of resonance phenomena in power lines supplying powerful rectifier plants

et al. 2021

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A feature of modern power supply systems is the presence of a large number of electrical devises that consume non-sinusoidal current. The examples of the devices are frequency converters or rectifiers of large unit power. But substations for supplying a group of variable frequency drives affect negatively also. Since the equivalent circuit of the power includes line inductive and capacitive elements, under certain conditions, resonant can occur in the power supply system. The model for studying a power supply system with a powerful rectifier load has been developed in the MATLAB + Simulink environment. The equivalent power line circuit is adopted in the form of a certain number of series-connected sections. The number of sections was chosen from the condition of obtaining information about all harmonics, which the electric power quality standard prescribes to analyze. The simulation results show the number of the harmonic at which the resonance occurs depends on the length of the power line. It has been found that at resonance, the maximum current harmonic circulates through the source. And at the end of the line in this moment, the current harmonic has a minimum value, while the corresponding voltage harmonic rises sharply.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of resonance phenomena in power lines supplying powerful rectifier plants

et al. 2021

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Influence of the relative location of distributed energy sources on the current protection of the electric network

Ivanchenko

Voytyuk

Смирнов

2021

J. Phys.: Conf. Ser.

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This article focuses on studying the influence of additional sources of electricity generation on the traditional distribution grid, which leads to a change in the direction of the power flow in the grid. Consequently, the sensitivity and speed of current protection are not provided due to the dynamic operation of distributed generation sources. This paper considers the effect of distributed generation on the protection of the power grid. A special emphasis is on problems which may occur in the power grid in the presence of distributed generation. The theoretical background of blinding and calculation of the effect is also presented. The studies presented are made by computer modelling in Matlab/Simulink.

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Research of potential on the grounding device in the network with low-impendance resistive neutral grounding

Chervonchenko

Brilinskiy

2019

IOP Conf. Ser.: Mater. Sci. Eng.

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The paper discusses the possibility of low-impendance (combined) neutral grounding in the 10-35 kV air network, suggests the logic of the relay protection against single-phase ground faults, and also based on computer simulation of transient processes, the potential of the low voltage network is estimated depending on the current circuit to ground, resistance values of the grounding device and network configuration 0.4 kV. The study is carried out by modeling the real part of the power system of St. Petersburg and the Leningrad region, located in the north-east of the region. Directly considered the distribution network of 110 kV Substation Plodovoe (Substation №. 511).

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Influence of the energy characteristics on the electrical grid simulation

Cited by 4 publications

References 0 publications

Investigation of resonance phenomena in power lines supplying powerful rectifier plants

Investigation of resonance phenomena in power lines supplying powerful rectifier plants

Influence of the relative location of distributed energy sources on the current protection of the electric network

Research of potential on the grounding device in the network with low-impendance resistive neutral grounding

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