Investtigation of sub harmonic oscillations in ferroresonance chains with Obnem magnetoprodes

Tovbaev, Akram; Ibadulaev, Muxtar; Safarov, Zokir

doi:10.1063/5.0131606

Cited by 21 publications

(2 citation statements)

References 2 publications

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“…We can see a comparison of the voltage drop before and after the introduction of reactive power sources at the end of every 220 kV voltage line of a interconnected power plant. Analyzing the data, we can draw the following conclusions about the increased voltage level after the introduction of reactive power sources [10]. A controlled shunt reactor-transformer is an effective means of covering the line's charging power and regulating voltage [11,12].…”

Section: Resultsmentioning

confidence: 99%

Assessment of the quality of electricity by applying reactive power sources

Togayev,

Tovbaev,

Nodirov

2024

E3S Web of Conf.

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In the quest to enhance electricity quality, various states and parameters play crucial roles, particularly in assessing the significance and capabilities of reactive power sources. The evolution of electricity systems in developed nations is marked by a vigorous pursuit of cutting-edge technologies to boost energy system efficiency, lower construction and operational costs of network infrastructure, and enhance power supply reliability. The issue of reactive power compensation and electricity quality is intricately linked to diverse consumer loads, voltage, and frequency considerations. This process entails elevating the system's active power factor to harmonize total power within the AC network, maintaining voltage levels, and mitigating harmonic distortions stemming from nonlinear industrial loads. Voltage stability measures are typically essential to curtail fluctuations along power transmission lines. Enhancing the system's operational reliability involves augmenting the maximum active power that reactive power compensation mechanisms can adjust.

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Section: Resultsmentioning

confidence: 99%

Assessment of the quality of electricity by applying reactive power sources

Togayev,

Tovbaev,

Nodirov

2024

E3S Web of Conf.

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“…In the stationary mode, the excitation conditions, the areas of existence, the dependence of the output values on the parameters of the circuit and the applied action are determined. In general, subharmonic oscillations in three-phase chains can be excited in chains consisting of nonlinear inductive resistance and capacitance in chains for the purpose of accumulating a certain amount of energy in their elements necessary to excite and hold their oscillation at a given frequency [10,11,12,13,14]. However, from a practical point of view, electro ferromagnetic chains that are capable of working to a large capacity during energy exchange occur, which are autoparametric oscillatory circuits that are of great interest.…”

Section: Introductionmentioning

confidence: 99%

Study of subharmonic oscillation processes in ferroresonance circuits

Tovbaev,

Ibadullayev,

Davronova

2024

E3S Web of Conf.

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The article presents a general theory of the analysis of subharmonic oscillations at a frequency of 25 Hz in three-phase Ferro resonance circuits with common magnetic conductors. The abbreviated equations are obtained by averaging with the corresponding phases. From the condition of the existence of a periodic solution, the phase and amplitude ratios of the excited oscillations are determined, which differ from threephase circuits with a separate ferromagnetic element. In steady-state mode, the excitation conditions and the area of existence are determined depending on the parameters of the circuit, the bias current and the applied action. The stability of the solution of the initial system of nonlinear second-order differential equations is also studied by analysing the roots of the characteristic equation using a qualitative method. In the theory of nonlinear electrical circuits, the analysis of the physical processes occurring in threephase Ferro resonance circuits during the excitation of second-order subharmonic oscillations is of particular importance in the design and creation of various converter devices.

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Methology of experimental research of voltage quality in electrical circuit

Boynazarov,

Tovbaev,

Usarov

2024

E3S Web Conf.

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This study investigates the causes of electricity quality deterioration and proposes measures to mitigate it. The analysis focuses on the technical conditions for connecting consumers to the electricity network and the necessary conditions for electricity supply. It is recognized that, in addition to quality indicators, auxiliary parameters describing energy quality in terms of current and voltage must be measured. The study presents a graphical approach to analyzing measurement results, comparing load control graphs with energy quality indicator graphs over a 30-minute time interval. The results consider not only compliance with regulatory requirements but also the fulfillment of obligations to ensure electricity quality.

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Investtigation of sub harmonic oscillations in ferroresonance chains with Obnem magnetoprodes

Cited by 21 publications

References 2 publications

Assessment of the quality of electricity by applying reactive power sources

Assessment of the quality of electricity by applying reactive power sources

Study of subharmonic oscillation processes in ferroresonance circuits

Methology of experimental research of voltage quality in electrical circuit

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