Contact Resistance Modeling

Loskutov, Stephan; Schetinina, M. O.; Zelenina, O. A.

doi:10.15588/1607-6761-2018-1-3

Cited by 2 publications

(4 citation statements)

References 3 publications

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“…3, 005 Энергетические системы, 2023 Результаты (Results) В настоящее время во многих сетевых компаниях есть большой опыт построения систем АСУ ТП с применением стандарта МЭК 61850-8-1 на подстанционном уровне. Чего нельзя сказать об уровне процесса и присоединения [8,9].…”

Section: рис 2 схема электрических соединений подстанцииunclassified

“…Во время передачи цифрового сигнала, а также во время его обработки во вторичном оборудовании не добавляется никаких дополнительных погрешностей. Этим обеспечивается соответствие требованиям, как по релейной защите, так и по измерениям [7][8][9].…”

Section: рис 2 схема электрических соединений подстанцииunclassified

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The Concept of Modernizing Electrical Substations in the Energy System of the Belgorod Region Using Digital Technologies and Solutions

Prasol,

Saenko

2023

Energy Systems

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The work is devoted to the current topic of using digital technologies and solutions in modern electric power industry and the concept of digital transformation of electrical energy. The issue of organizing and constructing digital substations is considered as one of the leading trends in the modern electric power industry. The paper presents the main technical and organizational solutions typical for the construction of digital substations based on open protocols of the international standard IEC 61850 “Networks and communication systems in substations.” A general assessment of the condition of step-down substations in the power system of the Belgorod region is given. As an object of study, the diagram of one of the typical substations in the power system of the Belgorod region is presented and analyzed. For the considered substation, a concept for its modernization has been proposed using digital technologies and solutions to comply with the term “Digital Substation” and in accordance with the requirements of the international standard IEC 61850. Moreover, the modernization concept is proposed both taking into account the achievement of the necessary substation control functions, and in accordance with the existing level domestic energy industry and the state of the region's electrical networks. The proposed modernization will lead to an increase in the level of controllability and observability of the substation, a reduction in the costs of monitoring and self-diagnosis of secondary connections, and an increase in the level of intelligent control of the operating mode of power equipment and secondary systems. In addition, it will ensure the gradual modernization of existing substations in the region in the direction of their digitalization.

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Section: рис 2 схема электрических соединений подстанцииunclassified

The Concept of Modernizing Electrical Substations in the Energy System of the Belgorod Region Using Digital Technologies and Solutions

Prasol,

Saenko

2023

Energy Systems

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“…The interaction of distributed electricity sources, its accumulators and active consumers will be carried out on the basis of "horizontal" connections and multi-party services. This approach will preserve the advantages of both centralized and decentralized power supply systems [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Low power quality in the MV DEN is often caused by voltage deviations. Load tap changers (LTCs) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] and step voltage regulators [17,18] are used to regulate the voltage levels. Booster transformers (BT) are widely used [19].…”

Section: Introductionmentioning

confidence: 99%

Thyristor Voltage Regulator Experimental Research

et al. 2020

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The article is devoted to the thyristor voltage regulator (TVR) development. The TVR purpose is to control power flows and regulate voltage in 6-20 kV distribution electrical networks (DEN). The principle of TVR operation is based on the plus EMF (or minus EMF) introduction into power line when the shared use of longitudinal (change of magnitude) and transverse (change of phase) voltage regulation. The description of the TVR prototype is given. The TVR prototype consists of a 0.4 kV thyristor switches, power transformers (shunt and serial) and a 6 kV switchgear. The TVR has a two-level control system (CS). The TVR prototype experimental research was conducted in four stages: check of power equipment, first level CS research, second level CS research, prototype tests as a whole. The connection diagrams (thyristor switches unit, transformer and measuring equipment) and contact connections reliability were checked when the power part was tested. A qualitative characteristic of the input and output signals was obtained when testing the first level CS. It is found that the thyristor control pulses are formed according to the developed algorithm. The correctness of control system algorithms, executed and transmitted commands, passed and received data was confirmed as a result of the second level CS tests. The TVR research results indicate that the prototype provides the smoothness and specified accuracy of voltage regulation in all modes. The control range of the output voltage relative to the input was ±10%. The discreteness of regulation did not exceed 1.5%. The range of change in the shift angle of the output voltage relative to the input was ±5°. Research confirmed the TVR ES operability and its readiness for trial operation.

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Contact Resistance Modeling

Cited by 2 publications

References 3 publications

The Concept of Modernizing Electrical Substations in the Energy System of the Belgorod Region Using Digital Technologies and Solutions

The Concept of Modernizing Electrical Substations in the Energy System of the Belgorod Region Using Digital Technologies and Solutions

Thyristor Voltage Regulator Experimental Research

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