10.14489/td.2026.02.pp.056-059

2026, 02 February

DOI: 10.14489/td.2026.02.pp.056-059

Shilin A. N., Avdeyuk D. N., Kuteynikov P. D.
ADAPTIVE FREQUENCY AND MINIMUM VOLTAGE RELAY
(pp. 56-59)

Abstract. The article presents the scheme and principle of operation of the developed adaptive frequency and minimum voltage relay. The relay implements a direct method for measuring the period of the network and a compensation method for measuring voltage. The converter uses automatic amplitude stabilization of the measured voltage, which eliminates the influence of various amplitude factors on the measurement of the mains period. The compensation method of voltage measurement improves measurement accuracy by reducing the measuring range and eliminating non-linearity of the characteristics of the elements. The developed relay allows you to quickly determine the operating mode of the power supply system with higher accuracy than with two relays. The increased accuracy is due to the fact that when measuring two quantities, common elements of measuring devices are used.

Keywords: emergency modes, current, voltage and frequency relays, adaptive relay protection systems.

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A. N. Shilin, D. N. Avdeyuk, P .D. Kuteynikov (Volgograd State Technical University, Volgograd, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

1. Shabad, M. A. (1984). Relay protection at electrical substations supplying synchronous electric motors. Energoatomizdat. (Biblioteka elektromontera, Issue 565). [in Russian language].
2. Belov, A. V. (2008). Emergency automation in load nodes with high-power synchronous electric motors (Part 1). NTF “Elektroprogress”. [in Russian language].
3. Shilin, A. N., Dikarev, P. V., Kuteinikov, P. D., & Vlasov, V. M. (2025). Adaptive network frequency converter for relay protection of power supply systems. Kontrol'. Diagnostika, 28(6), 26–30. [in Russian language].
4. Profos, P. (Ed.). (1990). Industrial measurements: A handbook (2nd ed., Vol. 1). Metallurgiya. (Translated from German) [in Russian language].Popov, E. P. (1989). Theory of linear systems of automatic regulation and control. Nauka. [in Russian language].

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DOI: 10.14489/td.2026.02.pp.056-059

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