Investigation of the properties of reed switches in devices for resource-saving relay protection of the electrical part of power plants

Neftissov, Alexandr; Andreyeva, Oxana; Sarinova, Assiya

doi:10.1063/5.0046558

Cited by 6 publications

(5 citation statements)

References 7 publications

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“…In [5] a study of the properties of reed switches in the devices of resource-saving relay protection of the electrical part of power plants is presented. In [5] the necessity of studying the change in the reed switch parameters with respect to the number of the number of times its contacts are actuated is noted. This paper presents the result of a three-month experiment on twenty new reed switches.…”

Section: Main Partmentioning

confidence: 99%

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Determination of changes in the parameters of reed switches in resource-saving relay protection devices of the electrical part of power plants

Neftisov

Talipov

Andreeva

et al. 2022

J. Phys.: Conf. Ser.

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This publication is a continuation of many years of research on the development of the basis for building a unique resource-saving relay protection, which does not use current transformers to obtain information about the primary current. The authors propose to consider the possibility of building relay protection devices with the use of reed switches as sensitive elements. However, an important issue remains the study of reed switches parameters with the passage of time and the number of actuations and returns.

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Section: Main Partmentioning

confidence: 99%

“…They are metal-intensive, have large errors in transient modes and create a dangerous voltage when their secondary circuits are broken [3]. It is possible to avoid these disadvantages by using other primary transducers to obtain information, such as reed switches [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Determination of changes in the parameters of reed switches in resource-saving relay protection devices of the electrical part of power plants

Neftisov

Talipov

Andreeva

et al. 2022

J. Phys.: Conf. Ser.

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show abstract

“…All of them have advantages and disadvantages. Having analyzed the characteristics of alternatives to current transformers, we chose a reed switch for the research and construction of relay protection devices [11]. Since, unlike other sensitive elements, when using reed switches, control circuits are used, and not measurement circuits, which has a positive effect in the form of the absence of interference.…”

Section: A Study Of the Functioning Of Reed Switches Under The Influence Of A Magnetic Field Created By A Current In A Conductor In A Tramentioning

confidence: 99%

“…In the well-known works [11,12], the construction of relay protection devices on reed switches, solutions concern only the steady state. This severely limits the application of the proposed solutions.…”

Section: A Study Of the Functioning Of Reed Switches Under The Influence Of A Magnetic Field Created By A Current In A Conductor In A Tramentioning

confidence: 99%

Determination of the magnitude of short-circuit surge current for the construction of relay protection on reed switches and microprocessors

Neftissov

Biloshchytskyi

Talipov

et al. 2021

EEJET

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A study of the functioning of reed switches under the influence of a magnetic field created by a current in a conductor in a transient mode with the presence of an aperiodic component has been carried out. A well-known method for determining current using reed switches was implemented. At the same time, it was determined that the originally formulated method did not give the required result within the limits of errors. This is most likely due to the peculiarities of the mechanism of movement of the reed switch contacts. Alternatively, the measurements were taken to take the return currents instead of the pick-up currents and the time between the return times. They are more stable. Simulation is performed, experimental determination of the value of surge current by measuring time is carried out. The main element of the created installation was the power transformer coil with low active and high inductive resistance. As part of the study, the reed switches were placed in a magnetic field with an aperiodic component, as in the transient mode. This study will show the applicability of reed switches for the construction of relay protection devices that will not need current transformers to obtain information about the primary current in the conductor. In the course of the research, it was found that the error in determining the magnitude of current was no more than 10 %. Using microprocessors, it is possible to build relay protection devices with a speed of up to 20 ms. This result makes it possible to build new devices. Since in the well-known developments, it was only said about determining the magnitude of current in a steady state. When building relay protection devices on reed switches, without using current transformers, it will be possible to build backup protections that duplicate not only the devices themselves, but also the primary measuring transformers with other sensitive elements. This will improve the reliability of the power supply.

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“…Currently, the development of software systems for lossy data compression is an urgent task. In solving this problem, there are various areas of research in which research is actively being conducted in the field of developing compression algorithms [1][2][3][4][5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Development of compression algorithms for hyperspectral aerospace images based on discrete orthogonal transformations

Sarinova

2021

E3S Web Conf.

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The paper describes the development of compression algorithms for hyperspectral aerospace images based on discrete orthogonal transformations for the purpose of subsequent compression in Earth remote sensing systems. As compression algorithms necessary to reduce the amount of transmitted information, it is proposed to use the developed compression methods based on Walsh-Hadamard transformations and discrete-cosine transformation. The paper considers a methodology for developing lossy and high-quality compression algorithms during recovery, taking into account which an adaptive algorithm for compressing hyperspectral AI and the generated quantization table has been developed. The conducted studies have shown that the proposed lossy algorithms have sufficient efficiency for use and can be applied when transmitting hyperspectral remote sensing data in conditions of limited buffer memory capacity and bandwidth of the communication channel.

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Investigation of the properties of reed switches in devices for resource-saving relay protection of the electrical part of power plants

Cited by 6 publications

References 7 publications

Determination of changes in the parameters of reed switches in resource-saving relay protection devices of the electrical part of power plants

Determination of changes in the parameters of reed switches in resource-saving relay protection devices of the electrical part of power plants

Determination of the magnitude of short-circuit surge current for the construction of relay protection on reed switches and microprocessors

Development of compression algorithms for hyperspectral aerospace images based on discrete orthogonal transformations

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