DEVICE FOR DETERMINING THE VALUE OF THE STEADY-STATE ELECTRICITY IN THE PRIMARY CIRCUIT USING A REED SWITCH AND A MICROPROCESSOR
DOI:
https://doi.org/10.37943/AITU.2021.75.95.005Keywords:
Relay protection, reed switch, microprocessor, identification, current transformer, short circuitAbstract
This article discusses an innovative device designed to determine the value of the steady-state current in the primary circuit of electrical installations using reed switches and a microprocessor without the use of current transformers. The typical structure of relay protection devices is considered. The main elements are presented. When choosing a primary converter, a reed switch was taken, because it has certain advantages over current transformers. As part of the research, experimental installations for measurements were assembled. They made it possible to emulate the real conditions in which the relay protection devices have to function, unnecessary and to depict the characteristics of future devices. The code is presented that allows the microprocessor device to function according to the laid down algorithm. A device on a reed switch and a microprocessor is presented, which
allows transmitting a certain amount of current in the primary circuit in digital form (binary code) to the microprocessor protection. The presented measuring device made it possible to implement a method for determining the magnitude of the steady-state short-circuit current.
References
Chernobrovov, N.V., & Semenov, V.A. (1998). Relay protection of energy systems: textbook. pos. for technical schools. NV Chernobrovov.
Sirota, I.M., & Shurin, V.M. (1971). Filters of symmetrical components in circuits with remote sensors. Electrical Engineering, (11), 26-31.
Meerovich, E.A., Nazarov, L.A., Karabaev, G.H., & Kokurkin, B.P. (1980). Measurement of currents of high voltage lines by its magnetic fields. Electrical Engineering, (7), 32-40.
Kazansky, V.E. (1988). Measuring current transducers in relay protection. M.: Energoatomizdat.
Kletzel, M. Ya., & Musin, V. V. (1987). About construction on reed switches of protections of highvoltage installations without current transformers. Electrical Engineering, (4), 11-13.
Kozovic, L.A., & Bishop, M.T. (2009, September). Modern relay protection with current sensors based on the Rogovsky coil. In Modern directions of development of relay protection systems and automation of power systems: Sat. report International. scientific and technical conf. Moscow (pp. 7-10).
Kletsel, M.Ya. (1991). Principles of construction and models of differential protections of electrical installations on reed switches. Electrical Engineering, (10), 47-50.
Kletsel, M.Ya., Alishev, Zh.R., Manukovsky, A.V., & Musin, V.V. (1993). Properties of reed switches when using them in relay protection. Electrical Engineering, (9), 18-21.
Kletsel, M.Ya., & Maishev, P.N. (2007). Features of construction on reed switches of differentialphase protections of transformers. Electrical Engineering, (12), 2-7.
Schoff, W. N. (1993). Reed switches and reed devices: Handbook. MEI Publishing House.
Karabanov, S.M., Meisels, R.M., & Schoff, V.N. (2011). Magnetically controlled contacts (reed switches) and products based on them.
Meisels, R.M., Schoff, W.N. (1998). Reed switches. A look at the prospects of the direction. Electrical Engineering, 1, 20-25.
Kletsel, M.Ya., Neftisov, A.V., Maishev, P.N., & Zhantlesova, A.B. (2014). Identification of the steadystate short-circuit current by means of reed switches. Electrical Engineering, 4, 28-34.
Zhantlesova, A.B., Kletsel, M.Y., Maishev, P.N., & Neftisov, A.V. (2014). Characterizing a sustained short-circuit current with the use of reed relays. Russian Electrical Engineering, 85(4), 210-216.
Andreyeva, O., Neftissov, A., & Mileiko, A. (2021, March). Method of diagnostics of the short-circuited rotor damage on point induction converters. In AIP Conference Proceedings (Vol. 2337, No. 1, p. 030001). AIP Publishing LLC.
Neftissov, A.V., Andreyeva, O.A., & Sarinova, A.Z. (2021, March). Investigation of the properties of reed switches in devices for resource-saving relay protection of the electrical part of power plants. In AIP Conference Proceedings (Vol. 2337, No. 1, p. 030010). AIP Publishing LLC.
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors who publish a manuscript in this journal agree to the following terms:
- The authors reserve the right to authorship of their work and transfer to the journal the right of first publication under the terms of the Creative Commons Attribution License, which allows others to freely distribute the published work with a mandatory link to the the original work and the first publication of the work in this journal.
- Authors have the right to conclude independent additional agreements that relate to the non-exclusive distribution of the work in the form in which it was published by this journal (for example, to post the work in the electronic repository of the institution or publish as part of a monograph), providing the link to the first publication of the work in this journal.
- Other terms stated in the Copyright Agreement.