Software for device diagnostics and thermal protection of electric motors under dusty operating conditions

Authors

  • V. E. Krivonosov State higher educational establishment "Priazovskyi state technical university", Mariupol, Ukraine
  • I. V. Fedosova State higher educational establishment "Priazovskyi state technical university", Mariupol, Ukraine
  • S. V. Vasilenko JSC "Satellite", Mariupol, Ukraine

DOI:

https://doi.org/10.31498/2225-6733.38.2019.181416

Keywords:

asynchronous motor, temperature protection, local insulation overheating, software

Abstract

Asynchronous motors (AM) are the most common electrical consumers. The share of AM of all power consumers operating at voltages up to 1000 V is up to 70% of the total number. The main reason for electric machines service life reduction in severe environment pollution with dust is accelerated aging of the insulation of the stator windings. In consequence of the fact that a number of enterprises of Ukraine changed from scheduled preventive maintenance to repairs in case of emergency, the timely detection of abnormal operating conditions of AM is the key to trouble-free operation of the enterprise. The thickness of the dust layer, for engines with the power of 50 kW and more, may vary from 2 to 5 centimeters, while the lower part of the frontal winding remains clean. The dust layer on the surface of the insulation windings AM leads to a decrease in heat transfer and a local increase in the temperature of the insulation under the dust layer. Development of a method for diagnosing the causes of thermal overload of the stator windings insulation and temperature protection of AM, determining the conditions for the onset of maintenance, the creation of algorithms and software for devices for temperature protection of AM is a pressing task. According to the equation of heat balance of AM and taking into account the decrease of heat flow from the insulation of the stator winding to the air, assuming the walls of dust plane-parallel, the expression for determining the critical coating of insulation with dust has been obtained, which is the criterion for determining the initial moment of preventive work. Theoretical and experimental studies have made it possible for us to develop a new method of AM temperature protection. The novelty of the method consists of measuring and comparing the temperatures of thermal sensors installed on the dusty and non-dusty surfaces of the insulation of the stator winding of the AM. It has been established that the term of AM operation in dusty environments, depends on local overheating of the insulation. 3 cm and more dust layer on the surface of the insulation shortens the life of AM by 1,8-2,3 times. The criterion for determining the initial moment of the maintenance is the temperature difference of the insulation covered and not covered with dust, which does not exceed 50°С. Simultaneous surpassing of the insulation temperature at the measurement points above the permissible value is a criterion for either the AM damage or the driving gear damage, or the presence of asymmetrical voltage in the mains; in this case the AM must be disconnected from the mains

Author Biographies

V. E. Krivonosov, State higher educational establishment "Priazovskyi state technical university", Mariupol

Кандидат технічних наук, доцент

I. V. Fedosova, State higher educational establishment "Priazovskyi state technical university", Mariupol

Доктор педагогічних наук, професор

S. V. Vasilenko, JSC "Satellite", Mariupol

Інженер

References

Перелік використаних джерел (ГОСТ):

Архипцев Ю.Ф. Асинхронные электродвигатели / Ю.Ф. Архипцев, Н.Ф. Котеленец. – 2-е изд., прераб. и доп. – М. : Энергоатомиздат, 1986. – 104 с.

Ямова С.Я. Старение, стойкость и надежность электрической изоляции / С.Я. Ямова, Л.В. Ямова. – М. : Энергоатомиздат, 1990. – 176 с.

Вольдек А.И. Электрические машины: учебник для студентов ВУЗов / А.И. Вольдек. – Изд. 2-е перераб. и доп. – Л. : Энергия, 1974 г. – 267 c.

Правила устройства электроустановок. – 6-е изд. – Х. : Форт, 2009. – 704 с.

Пат. 16922 Україна, МПК Н 02 Н 5/00. Пристрій температурного захисту // О.Б. Кац, В.С. Дзюбан, А.О. Дубинський. – № u200607630; заявл. 10.07.06; опубл. 15.08.06, Бюл. № 8. – 3 с.

А. с. 1584028 СССР, МПК Н 02 Н 7/08, 7/085. Устройство для контроля и защиты электродвигателя от неполнофазных режимов и витковых замыканий / И.В. Жежеленко, В.Е. Кривоносов, Б.Ф. Рыбалко. – № 4389543/24-07; заявл. 09.03.88; опубл. 07.08.90, Бюл. № 29.

Пат. 53896 Україна, МПК Н 02 Н 5/04, Н 02 Н 5/10. Пристрій температурного захисту // Е.П. Москальов, І.Г. Шірнін, Ю.І. Дмитренко, Є.Б. Ковальов, В.В. Непочатов, О.Б. Кац. – № 2002010759; заявл. 30.01.02; опубл. 17.02.03, Бюл. № 2. – 3 с.

Кривоносов В.Е. Диагностика и защита изоляции обмоток асинхронных двигателей, работающих в агрессивной среде / В.Е. Кривоносов, С.В. Василенко // Вісник Приазовського державного технічного університету : Зб. наук. пр. / ДВНЗ «ПДТУ». – Маріуполь, 2015. – Вип. 31. – С. 148-155. – (Серія : Технічні науки).

Пат. 107898 Україна, МПК Н 02 Н 5/04, Н 02 К 15/12, Н 02 Н 5/10, G 01 K 13/08. Спосіб контролю і теплового захисту обмоток електричних машин, які працюють у запиленому середовищі // В.Є. Кривоносов, І.В. Жежеленко, О.В. Московець, С.В. Василенко. – № а201401923; заявл. 26.02.14; опубл. 25.02.15, Бюл. № 4. – 5 с.

Комп’ютерна програма «Діагностика причин температурного перевантаження і захист електроустаткування від перегрівання» / В.Є. Кривоносов; свідоцтво № 77424 від 06.03.2018 р.

References:

Arkhiptsev I.F., Kotelenets N.F. Asinkhronnye elektrodvigateli [Asynchronous electric motors]. Moscow, Energoatomizdat Publ., 1986. 104 p. (Rus.)

Iamova S.I., Iamova L.V. Starenie, stoikost’ i nadezhnost’ elektricheskoi izoliatsii [Aging, durability and reliability of electrical insulation]. Moscow, Energoatomizdat Publ., 1990. 176 p. (Rus.)

Vol’dek A.I. Elektricheskie mashiny. Uchebnik dlia studentov vuzov [Electric motors. Textbook for university students]. Leningrad, Energiia Publ., 1974. 267 p. (Rus.)

Pravila ustroistva elektroustanovok [Electrical installation rules]. Khar’kov, Fort Publ., 2009. 704 p. (Rus.)

Kats O.B., Dziuban V.S., Dubins’kii A.O. Pristrіi temperaturnogo zakhistu [Temperature protection device]. Patent UА, no. 16922, 2006. (Ukr.)

Zhezhelenko I.V., Krivonosov V.E., Rybalko B.F. Ustroistvo dlia kontrolia i zashchity elektrodvigatelia ot nepolnofaznykh rezhimov i vitkovykh zamikanii [Device for control and protection of the electric motor from non-single-phase modes and winding interruptions]. Certificate of authorship USSR, no. 1584028, 1990. (Rus.)

Moskal’ov E.P., Shіrnіn І.G., Dmitrenko Iu.І., Koval’ov Є.B., Nepochatov V.V., Kats O.B. Pristrіi temperaturnogo zakhistu [Temperature protection device]. Patent UA, no. 53896, 2003. (Ukr.)

Krivonosov V.E., Vasilenko S.V. Diagnostika i zashchita izoliatsii obmotok asinkhronnykh dvigatelei, rabotaiushchikh v agressivnoi srede [Diagnostics and protection of insulation of windings of asynchronous motors operating in aggressive environment]. Vіsnik Priazovs’kogo Derzhavnogo Tekhnіchnogo Unіversitetu. Serіia: Tekhnіchnі nauki – Reporter of the Priazovskyi State Technical University. Section: Technical sciences, 2015, no. 31, pp. 148-155. (Rus.)

Krivonosov V.E., Zhezhelenko І.V., Moskovets O.A., Vasilenko S.V. Sposob kontrolia i teplovoi zashchity obmotok elektricheskikh mashin, kotorye rabotaiut v zapylennoi srede [The method of control and thermal protection of the windings of electrical machines that operate in a dusty environment]. Patent UA, no. 107898, 2015. (Ukr.)

Krivonosov V.E. Komp’iuternaia programma «Diagnostika prichin temperaturnoi peregruzki i zashchity elektrooborudovaniia ot peregreva» [Computer program «Diagnostic causes of temperature overload and protection of electrical equipment from overheating»]. Certificate no. 77424, 2018. (Rus.)

Downloads

How to Cite

Krivonosov, V. E., Fedosova, I. V., & Vasilenko, S. V. (2019). Software for device diagnostics and thermal protection of electric motors under dusty operating conditions. Reporter of the Priazovskyi State Technical University. Section: Technical Sciences, (38), 129–137. https://doi.org/10.31498/2225-6733.38.2019.181416

Issue

No. 38 (2019): Reporter of the PSTU. Section: Technical sciences

Section

Electrical engineering and power engineering

License

The journal «Reporter of the Priazovskyi State Technical University. Section: Technical sciences» is published under the CC BY license (Attribution License).

This license allows for the distribution, editing, modification, and use of the work as a basis for derivative works, even for commercial purposes, provided that proper attribution is given. It is the most flexible of all available licenses and is recommended for maximum dissemination and use of non-restricted materials.

Authors who publish in this journal agree to the following terms:

1. Authors retain the copyright of their work and grant the journal the right of first publication under the terms of the Creative Commons Attribution License (CC BY). This license allows others to freely distribute the published work, provided that proper attribution is given to the original authors and the first publication of the work in this journal is acknowledged.

2. Authors are allowed to enter into separate, additional agreements for non-exclusive distribution of the work in the same form as published in this journal (e.g., depositing it in an institutional repository or including it in a monograph), provided that a reference to the first publication in this journal is maintained.