Analysis of small oscillations of complex electrical systems

Allaev, K. R.; Makhmudov, Tokhir

doi:10.1051/e3sconf/202021601097

Cited by 8 publications

(4 citation statements)

References 4 publications

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“…Regulation of the excitation of generators has a significant impact on transients in the power system; therefore, adequate systems for automatic regulation of excitation are necessary [10]. For the development of such systems at the design stage, as well as for the training of maintenance personnel, it is important to have information about the processes occurring in the system in various operating modes, including emergency ones [11]. A set of models should ensure the reproduction of the main characteristics operated by AECs that affect the quality of electromechanical transients [12].…”

Section: Methodsmentioning

confidence: 99%

Modernization of Automatic Excitation Control Systems of Generators in Syrdarya TPP

Makhmudov

Nurmatov

2021

Electromechanics and Robotics

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For reliable operation of electrical systems, it is necessary to ensure the stability of parallel operation of power plants and power systems. Violation of their stability leads to the repayment of a large number of electricity consumers, equipment damage and other negative consequences. Excitation systems can improve the quality of voltage control during sudden fluctuations in the load and with a short circuit at the output of synchronous generators. The aim of this work is to verify the automatic excitation controllers installed during the modernization process on the generators of the Syrdarya TPP in the DISILENT power factory software package. The article presents the results of a study in which the effect of the installed system of automatic control of excitation in the process of modernization on the quality of transient indicators is analyzed. Transient analysis showed an improvement in transient quality indicators such as decay time, overregulation and static error.

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Section: Methodsmentioning

confidence: 99%

Modernization of Automatic Excitation Control Systems of Generators in Syrdarya TPP

Makhmudov

Nurmatov

2021

Electromechanics and Robotics

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“…Most of the existing and applied in practice, methods and algorithms for finding a solution to the problems of optimizing short-term modes of the EPS, involve the use of deterministic initial data that were obtained as a result of monitoring [2]. These cases lead to the loss of the optimization effect since there are also corresponding deviations in the resulting EPS modes.…”

Section: Introductionmentioning

confidence: 99%

An algorithm for optimizing short-term modes of electric power systems, taking into account the conditions of the nature of the probability of the information flow of data

Xakimovich

Porubay

Mirjalilov

2022

J. Phys.: Conf. Ser.

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The work contains the results of the analysis of studies that were carried out to improve the operating modes of power facilities, taking into account uncertain data and the possibility of changing the load. A mathematical model of energy objects is formulated taking into account various types of restrictions. A comparative analysis of methods for solving problems was carried out and a method based on a penalty matrix was chosen. The results of the experiment showed the effectiveness of the proposed method for optimizing the modes of power facilities during changes in loads in different periods.

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“…Synchronous motors, due to their design features and high technical and economic indicators, are increasingly used in industry. Along with such working machines as, for example, pump and fan units, gas and blowers, characterized by an even load curve, synchronous motors are used as a drive for a wide variety of mechanisms with a pronounced variable load, such as: cone, jaw and hammer crushers, ball and rod mills of mining enterprises, rubber mixers in the chemical industry, rocking machines in oil fields, shears and saws for metal, continuous rolling mills, piston compressors, drives for converting units of reversible rolling mills, mine hoisting machines, skip winches of blast furnaces, powerful excavators, and many others [1,2].…”

Section: Introductionmentioning

confidence: 99%

Influence of Automatic Excitation Regulators on Modes of Hydropower Plants

Allaev

Nurmatov

Makhmudov

2021

Electromechanics and Robotics

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The article discusses electrical systems that include pumping stations. Taking into account the fact that the pumping stations are equipped with synchronous motors, it is proposed to use their excitation system in the mode of outputting reactive power to the electrical system. Synchronous motors, due to their design features and high technical and economic indicators, are increasingly used in industry. The expediency of regulating the excitation of a synchronous motor operating on a variable load follows from the following considerations: with large changes in the power on the shaft, to ensure sufficient dynamic stability of the synchronous motor during the period of the load, its excitation must be maintained at a maximum level. To ensure favorable economic and energy performance of the synchronous motor during the period of no load, it is advisable to reduce the excitation current. To ensure the modes of the supply network with high technical and economic indicators, it is required that synchronous motors give maximum reactive energy to the network. The amount of reactive energy delivered, depending on the mode of the supply network and the load of synchronous motors, must change, which is achieved by the automatic excitation controllers (AEC) of synchronous motors according to certain laws. In the work, the results of virtual modeling of the steady state of an electric power system containing a large pumping station are obtained, and the values of voltages in the nodes and the level of losses in the electric network are determined.

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Analysis of small oscillations of complex electrical systems

Cited by 8 publications

References 4 publications

Modernization of Automatic Excitation Control Systems of Generators in Syrdarya TPP

Modernization of Automatic Excitation Control Systems of Generators in Syrdarya TPP

An algorithm for optimizing short-term modes of electric power systems, taking into account the conditions of the nature of the probability of the information flow of data

Influence of Automatic Excitation Regulators on Modes of Hydropower Plants

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