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Your search keyword '"Askarov, Alisher"' showing total 4 results
4 results on '"Askarov, Alisher"'

1. Impact Assessment of Full-converter Wind Turbine Generators Integration on Transients in Power Systems.

Author

Askarov, Alisher, Andreev, Mikhail, and Ruban, Nikolay

Subjects
*TURBINE generators, *ELECTRIFICATION, *WIND turbines, *VOLTAGE regulators, *RENEWABLE energy sources, *ELECTRIC transients, *SYNCHRONOUS generators, *WIND power
Abstract

The integration of renewable energy sources is one of the promising directions in the development of modern electric power systems. However, the use of such facilities is associated with a number of issues, which are sufficiently critical for both the integrated facilities themselves and the existing power systems. One of these problems is a significant change in the behavior of transients in the power systems with a large share of renewables. This fact is primarily associated with a decrease in the total inertia of the system due to the introduction of converter-connected generation based on renewable energy sources, in particular, integration of Type-4 wind turbine generators. The appropriate tuning of automatic voltage regulators and power system stabilizers of synchronous generators installed at conventional power plants taking into account actual operating conditions can be proposed as a solution to indicated issue to enhance stabilization of power systems with high renewable energy penetration. The article suggests using the Hybrid Real-Time Power System Simulator to implement adequate and comprehensive tuning for such automation. [ABSTRACT FROM AUTHOR]

Published
2020
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2. Wind Power Plants Influence on Out-Of-Step Operation Mode Parameters of the Power System.

Author

RUBAN, Nikolay, ASKAROV, Alisher, RAZZHIVIN, Igor, and UFA, Ruslan

Subjects
WIND power plants, WIND power, RENEWABLE energy sources, ELECTRIC power systems, WIND turbines, SYNCHRONOUS generators, POWER electronics
Abstract

One of the problems associated with the integration of renewable energy sources is reducing the total inertia of the electric power system. By substituting the traditional synchronous generators to wind turbines connected to a network via power electronics devices the system the inertia constant is sharply reduced. In addition, the inertia of the system changes over time due to the wind turbine power change. Systems with lower inertia in the serious faults incident loses its stability easier. The question of the reduction of energy system inertia influence on the out-of-step mode parameters is not answered yet. Authors created a grid test model using software-hardware hybrid simulation tool HRTSim. The several experiments to determine the influence of type 4 wind turbine on the parameters of the out-of-step mode is realized. The oscillograms confirming the influence of the wind turbine on the parameters of the out-of-step mode are obtained. Problems of the influence of changes in the inertia of the power system during the integration of type 4 wind turbines on the parameters of the out-of-step mode are considered. The international experience in this field is analysed. The results of the analysis confirmed the insufficient study of this field and the almost complete lack of information about this in the grid codes of foreign countries. The experiments confirmed the theoretical expectation: the higher inertia induction stroke starts later, and the frequency slip is decreased. [ABSTRACT FROM AUTHOR]

Published
2020
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3. Hybrid Mathematical Model of Wind Turbine for Assessment of Wind Generation Impact on Transients in Power Systems.

Author

RAZZHIVIN, Igor, SUVOROV, Aleksey, KIEVETS, Anton, and ASKAROV, Alisher

Subjects
ELECTRIC transients, WIND turbines, HYBRID power systems, ELECTRIC power systems, WIND power, WIND power plants, MATHEMATICAL models
Abstract

Nowadays in the world a lot of attention is paid to the integration of renewable energy sources, especially wind power plants, into existing electric power systems. However, the modern simulation tools usage based on numerical integration for studying and assessment of renewables impact on transient processes in EPS is always associated with different simplifications and limitations. In this regard, the authors suggest the Hybrid Real-Time Power System Simulator (HRTSim) usage for comprehensive and accurate simulation of large-scale EPS with RES. The results of the synthesis of the wind turbine mathematical model as a part of the specialized module for the HRTSim are presented in the paper. The developed means are intended to solve the issue of this hardware-software simulator upgrade for comprehensive and adequate modelling of wind power generation facilities. [ABSTRACT FROM AUTHOR]

Published
2019

4. Justification of the Double Fed Induction Generator Model for Estimation of the Influence of Wind Power Installations on the Operation Mode of Power Systems.

Author

Ruban, Nikolay, Askarov, Alisher, and Daminova, Ekaterina

Subjects
*INDUCTION generators, *WIND power, *WIND power plants, *ELECTRIC generators, *WIND turbines, *COMPUTER performance
Abstract

Mathematical modeling of wind power plants is an urgent task, since the degree of their introduction into traditional energy systems is growing every year. At the same time, it is not always possible to obtain information about the processes in the power system. In such cases, it is possible to use the model of the power system. However, since the power systems are enormous, their model is also great, and therefore, with its detailed reproduction, many problems arise. One solution to such problem is to use simplified wind turbine models. The article substantiates the need to use detailed models of wind turbines to analyze their impact on the functioning of the power system. [ABSTRACT FROM AUTHOR]

Published
2019
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