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122 results on '"Askarov, Alisher"'

30. Research, Development and Application of Hybrid Model of Back-to-Back HVDC Link

Author

Ufa, Ruslan A., primary, Andreev, Mikhail V., additional, Diab, Ahmed A. Zaki, additional, Gusev, Alexander S., additional, Ruban, Nikolay Yu, additional, Sattar, Montaser Abd El, additional, Suvorov, Aleksey A., additional, Ali, Ziad M., additional, Askarov, Alisher B., additional, Rudnik, Vladimir E., additional, Razzhivin, Igor A., additional, Kievets, Anton V., additional, Bay, Yuly D., additional, Ibrahim, Ahmed, additional, Aboelsaud, Raef, additional, Al-Sumaiti, Ameena Saad, additional, and Hassan, Yahia B., additional

Published
2020
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32. Comprehensive Validation of Transient Stability Calculations in Electric Power Systems and Hardware-Software Tool for Its Implementation

Author

Suvorov, Aleksey A., primary, Diab, Ahmed A. Zaki, additional, Gusev, Alexander S., additional, Andreev, Mikhail V., additional, Ruban, Nikolay Yu., additional, Askarov, Alisher B., additional, Ufa, Ruslan A., additional, Razzhivin, Igor A., additional, Kievets, Anton V., additional, Bay, Yuly D., additional, Rudnik, Vladimir E., additional, Aboelsaud, Raef, additional, Ibrahim, Ahmed, additional, and Al-Sumaiti, Ameena Saad, additional

Published
2020
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37. An Adaptive Inertia and Damping Control Strategy Based on Enhanced Virtual Synchronous Generator Model.

Author

Suvorov, Aleksey, Askarov, Alisher, Ruban, Nikolay, Rudnik, Vladimir, Radko, Pavel, Achitaev, Andrey, and Suslov, Konstantin

Subjects
*SYNCHRONOUS generators, *ADAPTIVE control systems, *TRANSFER functions, *MATHEMATICAL models, *ALGORITHMS
Abstract

In modern converter-dominated power systems, total inertia is very variable and depends on the share of power generated by renewable-based converter-interfaced generation (CIG) at each specific moment. As a result, the limits required by the grid codes on the rate of change of frequency and its nadir or zenith during disturbances become challenging to achieve with conventional control approaches. Therefore, the transition to a novel control strategy of CIG with a grid-forming power converter is relevant. For this purpose, a control algorithm based on a virtual synchronous generator (VSG) is used, which simulates the properties and capabilities of a conventional synchronous generation. However, due to continuously changing operating conditions in converter-dominated power systems, the virtual inertia formed by VSG must be adaptive. At the same time, the efficiency of adaptive algorithms strongly depends on the used VSG structure. In this connection, this paper proposes an enhanced VSG structure for which the transfer function of the active power control loop was formed. With the help of it, the advantages over the conventional VSG structure were proven, which are necessary for the effective adaptive control of the VSG parameters. Then, the analysis of the impact of the VSG parameters on the dynamic response using the transient characteristics in the time domain was performed. Based on the results obtained, adaptive algorithms for independent control of the virtual inertia and the parameters of the VSG damper winding were developed. The performed mathematical modeling confirmed the reliable and effective operation of the developed adaptive control algorithms and the enhanced VSG structure. The theoretical and experimental results obtained in this paper indicate the need for simultaneous development and improvement of both adaptive control algorithms and VSG structures used for this purpose. [ABSTRACT FROM AUTHOR]

Published
2023
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39. The hybrid model of VSC HVDC

Author

Ufa, Ruslan, Andreev, Mikhail, Ruban, Nikolay, Suvorov, Aleksey, Gusev, Alexander, Razzhivin, Igor, Askarov, Alisher, Bay, Yuly, Kievets, Anton, Lozinova, Natalya, and Suslova, Olga

Published
2019
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44. Development and Research of Hybrid Model of Relay Protection

Author

Andreev, Mikhail, primary, Suvorov, Aleksey, additional, Ruban, Nikolav, additional, Ufa, Ruslan, additional, Gusev, Alexander, additional, Razzhivin, Igor, additional, Stavitskiy, Sergey, additional, Bay, Yuly, additional, Kievets, Anton, additional, Askarov, Alisher, additional, Lozinova, Natalya, additional, and Suslova, Olga, additional

Published
2018
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47. The comparison and analysis of Type 3 wind turbine models used for researching the stability of electric power systems.

Author

Razzhivin, Igor, Suvorov, Aleksey, Andreev, Mikhail, and Askarov, Alisher

Subjects
INDUCTION generators, ELECTRIC power system stability, WIND turbines, RENEWABLE energy sources, SOFTWARE development tools, WIND power plants, ELECTRIC transients
Abstract

The dominant trend of the modern energy is the use of generating plants based on renewable energy sources, among which the most common is a wind power plant based on doubly fed induction generator (Type 3 WT). The large-scale introduction of Type 3 WT into the modern power systems significantly changes their dynamic properties. There are problems with ensuring the basic condition of the reliability and the survivability of power systems – the stability. The study and solution of the indicated problems is possible only with the help of the mathematical modeling of a large-scale power systems which is currently being carried out with the help of widespread purely numerical software tools of calculations of modes and processes, which are characterized by various simplifications and limitations. For the properties and capabilities of software tools for studying stability issues, mathematical models of Type 3 WT, the so-called generic models, which also have simplifications and limitations, are adapted. In this article, the reliability of stability calculations of a real power system with Type 3 WT using software tools was evaluated, which allows to identify the influence of the applied simplifications and restrictions with a purely numerical approach on the quality of solving problems of assessing the stability of power systems with Type 3 WT. Also, the studies made it possible to identify the areas of the application of generic models of Type 3 WT as a part of the model of the real dimension power system, at which the greatest and least errors arise, as well as their causes. Such a comprehensive assessment becomes feasible due to the alternative approach proposed in the article, based on the use of a detail benchmark tool model instead of the full-scale data to compare the results of modeling. [ABSTRACT FROM AUTHOR]

Published
2022
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48. A Hybrid Simulation of Converter-Interfaced Generation as the Part of a Large-Scale Power System Model.

Author

Razzhivin, Igor, Askarov, Alisher, Rudnik, Vladimir, and Suvorov, Aleksey

Subjects
HYBRID computer simulation, HYBRID power systems, RENEWABLE energy sources, TEST systems
Abstract

This study aims to propose an alternative hybrid approach to model renewable energy sources (RESs), which provide the most reliable results in comparison with the existing simulating tools. Within the framework of this approach, a specialized hybrid processor for modeling converter-interfaced generation (CIG) is developed. This study describes its structure and validation in the test system by comparing the results with commercial modeling tools, and also presents experimental studies of its operation as parts of the practical power system. The results obtained confirm the adequacy of the developed tools. [ABSTRACT FROM AUTHOR]

Published
2021
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49. Analysis of the Influence of Wind Turbines on the Power Line Protection Operation

Author

Ruban, Nikolay Yurievich, Tkachenko, Sergey, Askarov, Alisher Bakhramzhonovich, and Kievets, Anton Vladimirovich

Subjects
relay protection, RTDS, возобновляемая энергия, distance relay characteristic, турбины, ComputerApplications_COMPUTERSINOTHERSYSTEMS, ветрогенераторы, simulation, моделирование, renewable energy, энергосистемы, релейная защита, power line, power system, wind turbines, линии электропередачи, distance protection
Abstract

In the article an experimental power system consisting of Russian equipment, as well as 220 kV power line distance protection, are simulated in the RTDS Simulator. The settings were calculated and the polygonal characteristics of distance protection were constructed. A sequential installation of wind turbines into various nodes of the power system was carried out and the correct operation of the protection was verified. As a result of the study, the influence of wind turbines on the distance protection when they are connected between the protection installation site and the point of the short circuit is revealed. The analysis of this influence is made. Possible ways to solve the identified problems are proposed, such as the use of adaptive distance protection, as well as numerous studies of the behavior of wind turbines in various operating modes for further analysis and possible adjustment of guidelines for relay protection using new algorithms for calculating and configuring of distance protection. The results of this work can be used to improve and clarify the recommendations for tuning, produced by manufacturers of relay protection devices, which currently do not take into account the influence of wind turbines.

Published
2019

50. Development of Automatic Pitch Angle Control Mathematical Model for Type-4 Wind Turbines Specialized Hybrid Processor.

Author

Razzhivin, Igor, Suvorov, Aleksey, Andreev, Mikhail, and Askarov, Alisher

Subjects
MATHEMATICAL models, WIND power plants, ELECTRIC power systems, INTELLIGENT control systems, HYBRID computer simulation, HYBRID power systems
Abstract

Copyright of Przeglad Elektrotechniczny is the property of Przeglad Elektrotechniczny and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2021
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