ANALYSIS OF ELECTROMAGNETIC VIBRATION FORCES IN THE ELEMENTS OF THE TURBOGENERATOR STATOR FASTENING TO THE CASE IN NON-NOMINAL OPERATION MODES

ANALYSIS OF ELECTROMAGNETIC VIBRATION FORCES IN THE ELEMENTS OF THE TURBOGENERATOR STATOR FASTENING TO THE CASE IN NON-NOMINAL OPERATION MODES

Purpose. The purpose of the paper is to determine the value of additional electromagnetic forces (EMF) that are created by the fluxes of scattering of the back of the turbogenerator (TG) stator core in the elements of its fastening to the case when operating in non-nominal modes according to the vib...

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Date:2018
Main Authors: Shevchenko, V. V., Minko, A. N., Strokous, A. V.
Format: Article
Language:English
Ukrainian
Published: National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2018
Subjects:
turbogenerator
load mode
non-nominal mode
electromagnetic force
reactive power
stator core fastening unit
621.313.322
Online Access:http://eie.khpi.edu.ua/article/view/2074-272X.2018.5.05
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Journal Title:Electrical Engineering & Electromechanics

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Electrical Engineering & Electromechanics
id eiekhpieduua-article-144638
record_format ojs
institution Electrical Engineering & Electromechanics
baseUrl_str
datestamp_date 2018-10-19T16:35:53Z
collection OJS
language English
Ukrainian
topic turbogenerator
load mode
non-nominal mode
electromagnetic force
reactive power
stator core fastening unit
621.313.322
spellingShingle turbogenerator
load mode
non-nominal mode
electromagnetic force
reactive power
stator core fastening unit
621.313.322
Shevchenko, V. V.
Minko, A. N.
Strokous, A. V.
ANALYSIS OF ELECTROMAGNETIC VIBRATION FORCES IN THE ELEMENTS OF THE TURBOGENERATOR STATOR FASTENING TO THE CASE IN NON-NOMINAL OPERATION MODES
topic_facet turbogenerator
load mode
non-nominal mode
electromagnetic force
reactive power
stator core fastening unit
621.313.322
турбогенератор
режим нагрузки
неноминальный режим
электромагнитная сила
реактивная мощность
узел крепления сердечника статора
621.313.322
format Article
author Shevchenko, V. V.
Minko, A. N.
Strokous, A. V.
author_facet Shevchenko, V. V.
Minko, A. N.
Strokous, A. V.
author_sort Shevchenko, V. V.
title ANALYSIS OF ELECTROMAGNETIC VIBRATION FORCES IN THE ELEMENTS OF THE TURBOGENERATOR STATOR FASTENING TO THE CASE IN NON-NOMINAL OPERATION MODES
title_short ANALYSIS OF ELECTROMAGNETIC VIBRATION FORCES IN THE ELEMENTS OF THE TURBOGENERATOR STATOR FASTENING TO THE CASE IN NON-NOMINAL OPERATION MODES
title_full ANALYSIS OF ELECTROMAGNETIC VIBRATION FORCES IN THE ELEMENTS OF THE TURBOGENERATOR STATOR FASTENING TO THE CASE IN NON-NOMINAL OPERATION MODES
title_fullStr ANALYSIS OF ELECTROMAGNETIC VIBRATION FORCES IN THE ELEMENTS OF THE TURBOGENERATOR STATOR FASTENING TO THE CASE IN NON-NOMINAL OPERATION MODES
title_full_unstemmed ANALYSIS OF ELECTROMAGNETIC VIBRATION FORCES IN THE ELEMENTS OF THE TURBOGENERATOR STATOR FASTENING TO THE CASE IN NON-NOMINAL OPERATION MODES
title_sort analysis of electromagnetic vibration forces in the elements of the turbogenerator stator fastening to the case in non-nominal operation modes
title_alt АНАЛИЗ ЭЛЕКТРОМАГНИТНЫХ ВИБРАЦИОННЫХ СИЛ В ЭЛЕМЕНТАХ КРЕПЛЕНИЯ СТАТОРА ТУРБОГЕНЕРАТОРА К КОРПУСУ ПРИ НЕНОМИНАЛЬНЫХ РЕЖИМАХ РАБОТЫ
description Purpose. The purpose of the paper is to determine the value of additional electromagnetic forces (EMF) that are created by the fluxes of scattering of the back of the turbogenerator (TG) stator core in the elements of its fastening to the case when operating in non-nominal modes according to the vibration control data. Methodology. The paper used the theory of electromagnetic fields, the method of polynomial approximation, mathematical modeling in the MathCAD-2000 professional package and the provisions of the general theory of electrical machines. Results. Analytical and numerical calculations of additional EMF values are performed, which were created by the leakage fluxes of the back of the stator core in the elements of fastening of the TG to the case when operating in non-nominal modes, which is determined by the need for night unloading of the power system. The values of these TG forces are established with a change in the output and consumption of reactive power and with a change in voltage. Originality. For the first time for TGs operating in non-nominal modes, the estimation and calculation of additional EMF in the elements of the TG core fastening to the case are carried out, which are created by the leakage fluxes of the back of the stator core and supplement the action of the basic EMF. The definition of these forces is relevant, because turbogenerators of TPPs in Ukraine with a capacity of 200-300 MW are maneuvering capacities and solve the problem of maintaining the power factor of the power system. Practical value. It was found that if the TGs often operate in non-nominal modes, the wear of the stator core fastening systems to the case is more significant than in the case of their operation only in nominal modes. The obtained data will allow to more accurately determine the scope of repair work, draw up schedules for their implementation, determine the locations of the sensors for monitoring, and can be used at the design stage of new machines. 
publisher National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine
publishDate 2018
url http://eie.khpi.edu.ua/article/view/2074-272X.2018.5.05
work_keys_str_mv AT shevchenkovv analysisofelectromagneticvibrationforcesintheelementsoftheturbogeneratorstatorfasteningtothecaseinnonnominaloperationmodes
AT minkoan analysisofelectromagneticvibrationforcesintheelementsoftheturbogeneratorstatorfasteningtothecaseinnonnominaloperationmodes
AT strokousav analysisofelectromagneticvibrationforcesintheelementsoftheturbogeneratorstatorfasteningtothecaseinnonnominaloperationmodes
AT shevchenkovv analizélektromagnitnyhvibracionnyhsilvélementahkrepleniâstatoraturbogeneratorakkorpusuprinenominalʹnyhrežimahraboty
AT minkoan analizélektromagnitnyhvibracionnyhsilvélementahkrepleniâstatoraturbogeneratorakkorpusuprinenominalʹnyhrežimahraboty
AT strokousav analizélektromagnitnyhvibracionnyhsilvélementahkrepleniâstatoraturbogeneratorakkorpusuprinenominalʹnyhrežimahraboty
first_indexed 2025-07-17T11:47:18Z
last_indexed 2025-07-17T11:47:18Z
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spelling eiekhpieduua-article-1446382018-10-19T16:35:53Z ANALYSIS OF ELECTROMAGNETIC VIBRATION FORCES IN THE ELEMENTS OF THE TURBOGENERATOR STATOR FASTENING TO THE CASE IN NON-NOMINAL OPERATION MODES АНАЛИЗ ЭЛЕКТРОМАГНИТНЫХ ВИБРАЦИОННЫХ СИЛ В ЭЛЕМЕНТАХ КРЕПЛЕНИЯ СТАТОРА ТУРБОГЕНЕРАТОРА К КОРПУСУ ПРИ НЕНОМИНАЛЬНЫХ РЕЖИМАХ РАБОТЫ Shevchenko, V. V. Minko, A. N. Strokous, A. V. turbogenerator load mode non-nominal mode electromagnetic force reactive power stator core fastening unit 621.313.322 турбогенератор режим нагрузки неноминальный режим электромагнитная сила реактивная мощность узел крепления сердечника статора 621.313.322 Purpose. The purpose of the paper is to determine the value of additional electromagnetic forces (EMF) that are created by the fluxes of scattering of the back of the turbogenerator (TG) stator core in the elements of its fastening to the case when operating in non-nominal modes according to the vibration control data. Methodology. The paper used the theory of electromagnetic fields, the method of polynomial approximation, mathematical modeling in the MathCAD-2000 professional package and the provisions of the general theory of electrical machines. Results. Analytical and numerical calculations of additional EMF values are performed, which were created by the leakage fluxes of the back of the stator core in the elements of fastening of the TG to the case when operating in non-nominal modes, which is determined by the need for night unloading of the power system. The values of these TG forces are established with a change in the output and consumption of reactive power and with a change in voltage. Originality. For the first time for TGs operating in non-nominal modes, the estimation and calculation of additional EMF in the elements of the TG core fastening to the case are carried out, which are created by the leakage fluxes of the back of the stator core and supplement the action of the basic EMF. The definition of these forces is relevant, because turbogenerators of TPPs in Ukraine with a capacity of 200-300 MW are maneuvering capacities and solve the problem of maintaining the power factor of the power system. Practical value. It was found that if the TGs often operate in non-nominal modes, the wear of the stator core fastening systems to the case is more significant than in the case of their operation only in nominal modes. The obtained data will allow to more accurately determine the scope of repair work, draw up schedules for their implementation, determine the locations of the sensors for monitoring, and can be used at the design stage of new machines.  Целью статьи является определение величины дополнительных электромагнитных сил (ЭМС), которые создаются потоками рассеяния спинки сердечника статора турбогенератора (ТГ) в элементах его крепления к корпусу при работе в неноминальных режимах по данным вибрационного контроля. Методика. В работе использовали теорию электромагнитных полей, метод аппроксимация полиномами, математическое моделирование в пакете MathCAD-2000 professional, положения общей теории электрических машин. Результаты. Выполнены аналитические и численные расчеты дополнительных величин ЭМС, создаваемых потоками рассеяния спинки сердечника статора в элементах крепления ТГ к корпусу при работе в неноминальных режимах, что определяется необходимостью ночных разгрузок энергосистемы. Установлены значения этих сил ТГ при изменении выдачи и потребления реактивной мощности и при изменении напряжения. Научная новизна. Впервые для ТГ, работающих в неноминальных режимах, выполнены оценка и расчет дополнительных ЭМС в элементах крепления сердечника ТГ к корпусу, которые создаются потоками рассеяния спинки сердечника статора и дополняют действие основных ЭМС. Определение этих усилий актуально, т.к. турбогенераторы ТЭС Украины мощностью 200-300 МВт являются маневренными мощностями и решают задачу поддержания коэффициента мощности энергосистемы. Практическое значение. Было установлено, что если ТГ часто работают в неноминальных режимах, износ систем крепления сердечников статора к корпусам более значителен, чем в случае их работы только в номинальных режимах. Полученные данные позволят более точно определять объемы проведения ремонтных работ, составлять графики их проведения, определять места установки датчиков контроля, могут быть использованы на этапе проектирования новых машин.  National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2018-10-17 Article Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2018.5.05 10.20998/2074-272X.2018.5.05 Electrical Engineering & Electromechanics; No. 5 (2018); 29-33 Электротехника и Электромеханика; № 5 (2018); 29-33 Електротехніка і Електромеханіка; № 5 (2018); 29-33 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/2074-272X.2018.5.05/142489 http://eie.khpi.edu.ua/article/view/2074-272X.2018.5.05/142490 Copyright (c) 2018 V. V. Shevchenko, A. N. Minko, A. V. Strokous https://creativecommons.org/licenses/by-nc/4.0

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