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PROTECTION OF HOUSEHOLD APPLIANCES INDUCTION MOTORS AGAINST OVERCURRENT TAKING INTO ACCOUNT NONLINEAR DISTORTION OF PHASE CURRENT

PROTECTION OF HOUSEHOLD APPLIANCES INDUCTION MOTORS AGAINST OVERCURRENT TAKING INTO ACCOUNT NONLINEAR DISTORTION OF PHASE CURRENT

Purpose. Theoretical justification and engineering of induction motors heat protection method from overload currents taking into account nonlinear distortion of the phase current and implementation as a microprocessor device functioning algorithm. Methodology. To solve the problem used the theory of...

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Main Authors: Sereda, O. G., Varshamova, I. S.
Format: Article
Language:Ukrainian
Published: National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” 2015
Subjects:
induction motors
microprocessor protection
electronic overcurrent relay
621.316.91
621.316.573
асинхронный электродвигатель
микропроцессорное устройство защиты
электронные реле максимального тока
асинхронний електродвигун
мікропроцесорний пристрій захисту
електроні реле максимального струму
Online Access:http://eie.khpi.edu.ua/article/view/2074-272X.2015.3.02
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id eiekhpieduua-article-44713
record_format ojs
institution Electrical Engineering & Electromechanics
collection OJS
language Ukrainian
topic induction motors
microprocessor protection
electronic overcurrent relay
621.316.91
621.316.573
асинхронный электродвигатель
микропроцессорное устройство защиты
электронные реле максимального тока
621.316.91
621.316.573
асинхронний електродвигун
мікропроцесорний пристрій захисту
електроні реле максимального струму
621.316.91
621.316.573
spellingShingle induction motors
microprocessor protection
electronic overcurrent relay
621.316.91
621.316.573
асинхронный электродвигатель
микропроцессорное устройство защиты
электронные реле максимального тока
621.316.91
621.316.573
асинхронний електродвигун
мікропроцесорний пристрій захисту
електроні реле максимального струму
621.316.91
621.316.573
Sereda, O. G.
Varshamova, I. S.
PROTECTION OF HOUSEHOLD APPLIANCES INDUCTION MOTORS AGAINST OVERCURRENT TAKING INTO ACCOUNT NONLINEAR DISTORTION OF PHASE CURRENT
topic_facet induction motors
microprocessor protection
electronic overcurrent relay
621.316.91
621.316.573
асинхронный электродвигатель
микропроцессорное устройство защиты
электронные реле максимального тока
621.316.91
621.316.573
асинхронний електродвигун
мікропроцесорний пристрій захисту
електроні реле максимального струму
621.316.91
621.316.573
format Article
author Sereda, O. G.
Varshamova, I. S.
author_facet Sereda, O. G.
Varshamova, I. S.
author_sort Sereda, O. G.
title PROTECTION OF HOUSEHOLD APPLIANCES INDUCTION MOTORS AGAINST OVERCURRENT TAKING INTO ACCOUNT NONLINEAR DISTORTION OF PHASE CURRENT
title_short PROTECTION OF HOUSEHOLD APPLIANCES INDUCTION MOTORS AGAINST OVERCURRENT TAKING INTO ACCOUNT NONLINEAR DISTORTION OF PHASE CURRENT
title_full PROTECTION OF HOUSEHOLD APPLIANCES INDUCTION MOTORS AGAINST OVERCURRENT TAKING INTO ACCOUNT NONLINEAR DISTORTION OF PHASE CURRENT
title_fullStr PROTECTION OF HOUSEHOLD APPLIANCES INDUCTION MOTORS AGAINST OVERCURRENT TAKING INTO ACCOUNT NONLINEAR DISTORTION OF PHASE CURRENT
title_full_unstemmed PROTECTION OF HOUSEHOLD APPLIANCES INDUCTION MOTORS AGAINST OVERCURRENT TAKING INTO ACCOUNT NONLINEAR DISTORTION OF PHASE CURRENT
title_sort protection of household appliances induction motors against overcurrent taking into account nonlinear distortion of phase current
title_alt ЗАЩИТА АСИНХРОННЫХ ЭЛЕКТРОДВИГАТЕЛЕЙ БЫТОВЫХ ПРИБОРОВ ОТ ТОКОВ ПЕРЕГРУЗКИ С УЧЕТОМ НЕЛИНЕЙНЫХ ИСКАЖЕНИЙ ФАЗНОГО ТОКА
ЗАХИСТ АСИНХРОННИХ ЕЛЕКТРОДВИГУНІВ ПОБУТОВИХ ПРИЛАДІВ ВІД СТРУМІВ ПЕРЕВАНТАЖЕННЯ З УРАХУВАННЯМ НЕЛІНІЙНИХ СПОТВОРЕНЬ ФАЗНОГО СТРУМУ
description Purpose. Theoretical justification and engineering of induction motors heat protection method from overload currents taking into account nonlinear distortion of the phase current and implementation as a microprocessor device functioning algorithm. Methodology. To solve the problem used the theory of the representing complex harmonic oscillations analog signals expansion into the oscillation spectrum forming elementary harmonic components in order to compare their properties by applying the theory of discrete signals and systems, as well as methods of spectral analysis and discrete signals filtering. The harmonic analysis versatility is that any periodic signal may be synthesized from harmonic oscillation of certain amplitude, frequency and initial phase. A mathematical model for determining the phase current harmonic content of power supply networks with isolated neutral and non-linear loads types and, as a consequence, the distortion of sinusoidal phase current change is developed by multiplying the analog current in time dependency on the grate delta-function with different sampling intervals, in which the use of simple and widely used in relay protection units, in particular electronic overcurrent relays, mathematical operations of integration squares instantaneous current allows the most in harmony with the mathematical tools to build other network protection types. Findings. The necessity to increase the sensitivity of the induction motors heat protection from overload currents taking into account nonlinear distortion of the phase currents is proved. By nonlinear distortion harmonic analysis of the phase currents the motor protection reliability increasing provided by taking into account the higher harmonic components of the phase currents, which causes to additional losses and heating of the stator winding. It uses the simplest and widely used in protective relaying mathematical apparatus determining of most significant higher harmonics currents RMS. Originality. A possibility of extending the implemented protection list of electronic overcurrent relays based on the digital processing of signals from the current sensors is theoretical research by the harmonious analysis of phase current spectrum with the nonlinear distortions presence. A new technical solution is proposed that allows in online sliding monitoring mode to form response time of electronic overcurrent relays for reliable protection of induction motors from overload currents taking into account nonlinear distortion of the phase current. Practical value. A microprocessor protection functioning algorithm of induction motors is designed against impermissible heating coils with overload currents taking into account nonlinear distortion of the phase current.
publisher National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine”
publishDate 2015
url http://eie.khpi.edu.ua/article/view/2074-272X.2015.3.02
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first_indexed 2024-06-01T14:38:01Z
last_indexed 2024-06-01T14:38:01Z
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spelling eiekhpieduua-article-447132016-11-22T17:11:56Z PROTECTION OF HOUSEHOLD APPLIANCES INDUCTION MOTORS AGAINST OVERCURRENT TAKING INTO ACCOUNT NONLINEAR DISTORTION OF PHASE CURRENT ЗАЩИТА АСИНХРОННЫХ ЭЛЕКТРОДВИГАТЕЛЕЙ БЫТОВЫХ ПРИБОРОВ ОТ ТОКОВ ПЕРЕГРУЗКИ С УЧЕТОМ НЕЛИНЕЙНЫХ ИСКАЖЕНИЙ ФАЗНОГО ТОКА ЗАХИСТ АСИНХРОННИХ ЕЛЕКТРОДВИГУНІВ ПОБУТОВИХ ПРИЛАДІВ ВІД СТРУМІВ ПЕРЕВАНТАЖЕННЯ З УРАХУВАННЯМ НЕЛІНІЙНИХ СПОТВОРЕНЬ ФАЗНОГО СТРУМУ Sereda, O. G. Varshamova, I. S. induction motors microprocessor protection electronic overcurrent relay 621.316.91 621.316.573 асинхронный электродвигатель микропроцессорное устройство защиты электронные реле максимального тока 621.316.91 621.316.573 асинхронний електродвигун мікропроцесорний пристрій захисту електроні реле максимального струму 621.316.91 621.316.573 Purpose. Theoretical justification and engineering of induction motors heat protection method from overload currents taking into account nonlinear distortion of the phase current and implementation as a microprocessor device functioning algorithm. Methodology. To solve the problem used the theory of the representing complex harmonic oscillations analog signals expansion into the oscillation spectrum forming elementary harmonic components in order to compare their properties by applying the theory of discrete signals and systems, as well as methods of spectral analysis and discrete signals filtering. The harmonic analysis versatility is that any periodic signal may be synthesized from harmonic oscillation of certain amplitude, frequency and initial phase. A mathematical model for determining the phase current harmonic content of power supply networks with isolated neutral and non-linear loads types and, as a consequence, the distortion of sinusoidal phase current change is developed by multiplying the analog current in time dependency on the grate delta-function with different sampling intervals, in which the use of simple and widely used in relay protection units, in particular electronic overcurrent relays, mathematical operations of integration squares instantaneous current allows the most in harmony with the mathematical tools to build other network protection types. Findings. The necessity to increase the sensitivity of the induction motors heat protection from overload currents taking into account nonlinear distortion of the phase currents is proved. By nonlinear distortion harmonic analysis of the phase currents the motor protection reliability increasing provided by taking into account the higher harmonic components of the phase currents, which causes to additional losses and heating of the stator winding. It uses the simplest and widely used in protective relaying mathematical apparatus determining of most significant higher harmonics currents RMS. Originality. A possibility of extending the implemented protection list of electronic overcurrent relays based on the digital processing of signals from the current sensors is theoretical research by the harmonious analysis of phase current spectrum with the nonlinear distortions presence. A new technical solution is proposed that allows in online sliding monitoring mode to form response time of electronic overcurrent relays for reliable protection of induction motors from overload currents taking into account nonlinear distortion of the phase current. Practical value. A microprocessor protection functioning algorithm of induction motors is designed against impermissible heating coils with overload currents taking into account nonlinear distortion of the phase current. Теоретически исследована возможность расширения перечня реализуемых защит в электронных реле максимального тока на основе результатов цифровой обработки сигналов от датчиков тока путем гармонического анализа спектра фазного тока при наличии нелинейных искажений. Разработан алгоритм функционирования микропроцессорного устройства защиты асинхронных электродвигателей от недопустимого перегрева обмоток при токах перегрузки с учетом нелинейных искажений фазного тока. Теоретично досліджена можливість розширення переліку реалізованих захистів в електронних реле максимального струму на основі результатів цифрової обробки сигналів від датчиків струму шляхом гармонійного аналізу спектру фазного струму за наявності нелінійних спотворень. Розроблено алгоритм функціонування мікропроцесорного пристрою захисту асинхронних електродвигунів від неприпустимого перегрівання обмоток при струмах перевантаження з урахуванням нелінійних спотворень фазного струму. National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” 2015-06-20 Article Article application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2015.3.02 10.20998/2074-272X.2015.3.02 Electrical Engineering & Electromechanics; No. 3 (2015); 14-19 Электротехника и Электромеханика; № 3 (2015); 14-19 Електротехніка і Електромеханіка; № 3 (2015); 14-19 2309-3404 2074-272X uk http://eie.khpi.edu.ua/article/view/2074-272X.2015.3.02/40939 Copyright (c) 2015 O. G. Sereda, I. S. Varshamova https://creativecommons.org/licenses/by-nc/4.0

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