Development of a device for determining groups of winding connection of three-phase transformers

О. Danileyko H. Kolomits
Received 07.01.2022, Revised 09.03.2022, Accepted 26.04.2022
Abstract

Purpose. Research and development on the basis of a modern microcontroller of a device for determining a group of threephase transformers. Develop a microcontroller system for measuring the time between zero crossing points of the voltage sinusoids of the primary and secondary windings, which is uniquely related to the voltage phase shift angle. Develop, practically test and configure the microcontroller device program. Research methods. When solving the problem, general methods of studying electromechanical systems and building microcontroller control programs, building local networks of industrial automation are used. Scientific novelty. The necessity of checking the winding connection group of a three-phase transformer is analyzed and substantiated. The reasonably chosen method for determining the group of a three-phase transformer is based on the direct measurement of the phase displacement angle. In this work, a circuit and a program of a microcontroller device for determining the group of a three-phase transformer have been developed. A model has been developed in the NI Multisim software environment to test the principles of operation of the phase measurement circuit. Practical significance. When repairing transformers in electrical repair shops with low qualification of personnel, errors in marking the windings are possible. With prolonged use, the nameplate may be lost or the information on it may be distorted. Most transformers feed consumers in parallel groups. To be included in parallel operation, transformers must necessarily have the same winding connection groups. If the connection group between the transformers has an circulating current, which can significantly exceed the rated current. Thus, the personnel of electrical laboratories must check the group of connections of the transformer windings during testing. The device is intended for use in performing laboratory work in the discipline "Electrical Machines" in order to consolidate the theoretical knowledge gained by students in lectures and acquire skills in operating equipment, working with three-phase transformers. Based on this device, practical laboratory classes were developed. Results. The paper considers a device for automating the verification of groups of connections of transformer windings based on a single-board STM32 microcontroller. The possibility of using a microcontroller allows you to expand the functionality of the device in the direction of measuring other parameters of transformers

Keywords:
microcontroller system; three-phase transformer; transformer winding connection group

Retrieved from Vol. 20, No. 1, 2022

Pages 143–153

References Suggested citation

[1] Яцун М. А. Електричні машини. Підручник. – Львів: Видавництво Львівської політехніки, 2011. – 464 с.

[2] Андрієнко В.М. Електричні машини : навч. посіб. для студ. вищ. навч. закл., які навч. за напрямом підгот. «Електротехніка та електротехнології» / В.М. Андрієнко, В.П. Куєвда. – К. : НУХТ, 2010. – 366 с.

[3] Загірняк М.В. Електричні машини : підручник / М. В. Загірняк, Б. І. Невзлін. – Київ : Знання, 2009. – 399 с.

[4] ДСТУ 2864-94. Експериментальне оцінювання та контроль надійності. Основні положення. – Чинний від 1996-01-01. – К.: Держстандарт України, 1995. – IV, 30 с. – (Надійність техніки).

[5] Справочник по электронным компонентам: Архитектура и система команд RISС-процессоров семейства ARM. [Електронный ресурс]. – 2019. – Режим доступу: http://www.gaw.ru/html.cgi/txt/doc/micros/arm/index.htm.

[6] Multisim. [Електронний ресурс]. – 2019. – Режим доступу: https://studbooks.net/1841771/tehnika/multisim

[7] Справочник по электронным компонентам: Ознакомительное руководство по ARM-микроконтроллерам Cortex-M3. [Електронний ресурс]. – 2019. – Режим доступу: http://www.gaw.ru/html.cgi/txt/doc/micros/arm/cortex_arh/index.htm.

[8] Pete's Pages ARM Assembly Language Programming — Chapter 2. Inside the ARM M3. [Електронний ресурс]. – 2016. – Режим доступу: http://www.peter-cockerell.net/aalp/html/ch-2.html.

[9] PM0056 Programming manual. [Електронний ресурс]. – 2017. – Режим доступу: 6https://www.st.com/resource/en/progr6mming_manual/cd00228163-stm32f10xxx20xxx21xxxl1xxxx-cortexm3- programming-manual-stmicroelectronics.pdf

[10] The Insider`s Guide To The STM32 ARMBased Microcontroller Hitex (UK) Ltd. [Електронний ресурс]. – 2008. – Режим доступу: http://www.emcu.it/InsideCORTEX-1221142709.pdf

[11] STM32L4 Ecosystem CubeMX Tool. [Електронний ресурс]. – 2017. – Режим доступу: https://www.st.com/content/ccc/resource/training/technical/product_training/17/8e/5a/35/36/4e/4e/27/STM32L4_Ecosy stem_CubeMX_Tool.pdf/files/STM32L4_Ecosystem_CubeMX_Tool.pdf/jcr:content/translations/en.STM32L4_Ecosystem_ CubeMX_Tool.pdf

[12] STM32 и Timer Input Capture. Режим захвата сигнала. [Електронний ресурс]. – 2020. – Режим доступу: https://microtechnics.ru/stm32-i-timer-input-capture-rezhim-zahvata-signala/ УДК 699.86

Danileyko, О., & Kolomits, H. (2022). Development of a device for determining groups of winding connection of three-phase transformers. Journal of Kryvyi Rih National University, 20(1), 143-153. https://doi.org/10.31721/2306-5451-2022-1-54-143-153
en