THE NUMERICAL-FIELD ANALYSIS OF THE MAGNETIC FIELD AND THE ELECTRICAL QUANTITIES IN THE TURBOGENERATOR STATOR UNDER AUTONOMOUS UNBALANCED LOADING
Purpose. Assessing the impact of load asymmetry of turbogenerator (TG) on the magnetic field distribution, on the electrical and energy processes in it based on the numerical-field analysis within the constraints regulated by the standards. Methodology. The calculation model of TG has been construct...
Збережено в:
| Дата: | 2016 |
|---|---|
| Автор: | |
| Формат: | Стаття |
| Мова: | English Russian |
| Опубліковано: |
National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine”
2016
|
| Теми: | |
| Онлайн доступ: | http://eie.khpi.edu.ua/article/view/2074-272X.2016.5.02 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Electrical Engineering & Electromechanics |
Репозитарії
Electrical Engineering & Electromechanics| id |
eiekhpieduua-article-81019 |
|---|---|
| record_format |
ojs |
| institution |
Electrical Engineering & Electromechanics |
| collection |
OJS |
| language |
English Russian |
| topic |
turbo-generator unbalanced loading magnetic fields numerical calculations electromagnetic processes temporal functions 621.313 турбогенератор несимметричная нагрузка магнитные поля численные расчеты электромагнитные процессы временные функции 621.313 турбогенератор несиметричне навантаження магнітні поля чисельні розрахунки електромагнітні процеси часові функції 621.313 |
| spellingShingle |
turbo-generator unbalanced loading magnetic fields numerical calculations electromagnetic processes temporal functions 621.313 турбогенератор несимметричная нагрузка магнитные поля численные расчеты электромагнитные процессы временные функции 621.313 турбогенератор несиметричне навантаження магнітні поля чисельні розрахунки електромагнітні процеси часові функції 621.313 Milykh, V. I. THE NUMERICAL-FIELD ANALYSIS OF THE MAGNETIC FIELD AND THE ELECTRICAL QUANTITIES IN THE TURBOGENERATOR STATOR UNDER AUTONOMOUS UNBALANCED LOADING |
| topic_facet |
turbo-generator unbalanced loading magnetic fields numerical calculations electromagnetic processes temporal functions 621.313 турбогенератор несимметричная нагрузка магнитные поля численные расчеты электромагнитные процессы временные функции 621.313 турбогенератор несиметричне навантаження магнітні поля чисельні розрахунки електромагнітні процеси часові функції 621.313 |
| format |
Article |
| author |
Milykh, V. I. |
| author_facet |
Milykh, V. I. |
| author_sort |
Milykh, V. I. |
| title |
THE NUMERICAL-FIELD ANALYSIS OF THE MAGNETIC FIELD AND THE ELECTRICAL QUANTITIES IN THE TURBOGENERATOR STATOR UNDER AUTONOMOUS UNBALANCED LOADING |
| title_short |
THE NUMERICAL-FIELD ANALYSIS OF THE MAGNETIC FIELD AND THE ELECTRICAL QUANTITIES IN THE TURBOGENERATOR STATOR UNDER AUTONOMOUS UNBALANCED LOADING |
| title_full |
THE NUMERICAL-FIELD ANALYSIS OF THE MAGNETIC FIELD AND THE ELECTRICAL QUANTITIES IN THE TURBOGENERATOR STATOR UNDER AUTONOMOUS UNBALANCED LOADING |
| title_fullStr |
THE NUMERICAL-FIELD ANALYSIS OF THE MAGNETIC FIELD AND THE ELECTRICAL QUANTITIES IN THE TURBOGENERATOR STATOR UNDER AUTONOMOUS UNBALANCED LOADING |
| title_full_unstemmed |
THE NUMERICAL-FIELD ANALYSIS OF THE MAGNETIC FIELD AND THE ELECTRICAL QUANTITIES IN THE TURBOGENERATOR STATOR UNDER AUTONOMOUS UNBALANCED LOADING |
| title_sort |
numerical-field analysis of the magnetic field and the electrical quantities in the turbogenerator stator under autonomous unbalanced loading |
| title_alt |
ЧИСЛЕННО-ПОЛЕВОЙ АНАЛИЗ МАГНИТНОГО ПОЛЯ И ЭЛЕКТРИЧЕСКИХ ВЕЛИЧИН В СТАТОРЕ ТУРБОГЕНЕРАТОРА ПРИ АВТОНОМНОЙ НЕСИММЕТРИЧНОЙ НАГРУЗКЕ ЧИСЛЕННО-ПОЛЕВОЙ АНАЛИЗ МАГНИТНОГО ПОЛЯ И ЭЛЕКТРИЧЕСКИХ ВЕЛИЧИН В СТАТОРЕ ТУРБОГЕНЕРАТОРА ПРИ АВТОНОМНОЙ НЕСИММЕТРИЧНОЙ НАГРУЗКЕ |
| description |
Purpose. Assessing the impact of load asymmetry of turbogenerator (TG) on the magnetic field distribution, on the electrical and energy processes in it based on the numerical-field analysis within the constraints regulated by the standards. Methodology. The calculation model of TG has been constructed on the method of symmetrical components of the three-phase current system. The formed asymmetric system of the currents is used for multi-position numerical calculations of rotating magnetic fields. The temporal functions of the electromagnetic quantities which are subjected to the harmonic analysis are obtained on this basis. Results. Test calculations are conducted on a three-phase 35 MW TG during his work under autonomous unbalanced loading. The analysis of the temporal functions of the magnetic induction at different points of the TG stator and also similar functions of the magnetic flux linkage, EMF phase stator windings and other variables have been executed. Originality. Problems of exploitation of turbo-generators under unbalanced loading are detected by the consideration of their electromagnetic system on the whole, but not their simplified local parts, as usual. It has been shown that the temporal functions of EMF of the phase stator windings under unbalanced loading significantly differ in shape from sine waves and from each other and contain a number of significant upper harmonics. It has been detected that the phase currents would contain not only the first but also significant upper harmonics under unbalanced loading. Practical value. Analysis of the work of TG under unbalanced loading showed the «top» level of problems of electromagnetic character. It has been established that the function of the magnetic induction at the fixed points of the magnetic system on the whole have been changed but not in principle. The temporal functions of EMF, and, hence, the voltage of the stator phase windings significantly differ in shape from sine waves and from each other, there is a considerable imbalance of active powers generated by the individual phase windings of the stator. The information provided will allow the measures to ensure a durable and reliable operation of turbo-generators. |
| 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 |
2016 |
| url |
http://eie.khpi.edu.ua/article/view/2074-272X.2016.5.02 |
| work_keys_str_mv |
AT milykhvi thenumericalfieldanalysisofthemagneticfieldandtheelectricalquantitiesintheturbogeneratorstatorunderautonomousunbalancedloading AT milykhvi čislennopolevojanalizmagnitnogopolâiélektričeskihveličinvstatoreturbogeneratorapriavtonomnojnesimmetričnojnagruzke AT milykhvi numericalfieldanalysisofthemagneticfieldandtheelectricalquantitiesintheturbogeneratorstatorunderautonomousunbalancedloading |
| first_indexed |
2024-06-01T14:38:36Z |
| last_indexed |
2024-06-01T14:38:36Z |
| _version_ |
1800669984278446080 |
| spelling |
eiekhpieduua-article-810192017-08-21T18:31:00Z THE NUMERICAL-FIELD ANALYSIS OF THE MAGNETIC FIELD AND THE ELECTRICAL QUANTITIES IN THE TURBOGENERATOR STATOR UNDER AUTONOMOUS UNBALANCED LOADING ЧИСЛЕННО-ПОЛЕВОЙ АНАЛИЗ МАГНИТНОГО ПОЛЯ И ЭЛЕКТРИЧЕСКИХ ВЕЛИЧИН В СТАТОРЕ ТУРБОГЕНЕРАТОРА ПРИ АВТОНОМНОЙ НЕСИММЕТРИЧНОЙ НАГРУЗКЕ ЧИСЛЕННО-ПОЛЕВОЙ АНАЛИЗ МАГНИТНОГО ПОЛЯ И ЭЛЕКТРИЧЕСКИХ ВЕЛИЧИН В СТАТОРЕ ТУРБОГЕНЕРАТОРА ПРИ АВТОНОМНОЙ НЕСИММЕТРИЧНОЙ НАГРУЗКЕ Milykh, V. I. turbo-generator unbalanced loading magnetic fields numerical calculations electromagnetic processes temporal functions 621.313 турбогенератор несимметричная нагрузка магнитные поля численные расчеты электромагнитные процессы временные функции 621.313 турбогенератор несиметричне навантаження магнітні поля чисельні розрахунки електромагнітні процеси часові функції 621.313 Purpose. Assessing the impact of load asymmetry of turbogenerator (TG) on the magnetic field distribution, on the electrical and energy processes in it based on the numerical-field analysis within the constraints regulated by the standards. Methodology. The calculation model of TG has been constructed on the method of symmetrical components of the three-phase current system. The formed asymmetric system of the currents is used for multi-position numerical calculations of rotating magnetic fields. The temporal functions of the electromagnetic quantities which are subjected to the harmonic analysis are obtained on this basis. Results. Test calculations are conducted on a three-phase 35 MW TG during his work under autonomous unbalanced loading. The analysis of the temporal functions of the magnetic induction at different points of the TG stator and also similar functions of the magnetic flux linkage, EMF phase stator windings and other variables have been executed. Originality. Problems of exploitation of turbo-generators under unbalanced loading are detected by the consideration of their electromagnetic system on the whole, but not their simplified local parts, as usual. It has been shown that the temporal functions of EMF of the phase stator windings under unbalanced loading significantly differ in shape from sine waves and from each other and contain a number of significant upper harmonics. It has been detected that the phase currents would contain not only the first but also significant upper harmonics under unbalanced loading. Practical value. Analysis of the work of TG under unbalanced loading showed the «top» level of problems of electromagnetic character. It has been established that the function of the magnetic induction at the fixed points of the magnetic system on the whole have been changed but not in principle. The temporal functions of EMF, and, hence, the voltage of the stator phase windings significantly differ in shape from sine waves and from each other, there is a considerable imbalance of active powers generated by the individual phase windings of the stator. The information provided will allow the measures to ensure a durable and reliable operation of turbo-generators. На основе численных расчетов вращающегося магнитного поля проведена оценка работы турбогенератора при несимметричной нагрузке. Анализируются временные функции магнитной индукции в неподвижных точках магнитной системы статора, форма и гармонический состав ЭДС его обмоток, их мощности. Результаты расчетов при несимметричной нагрузке сопоставляются с аналогичными результатами при симметричной нагрузке. На основі чисельних розрахунків обертового магнітного поля виконана оцінка роботи турбогенератора при несиметричному навантаженні. Аналізуються часові функції магнітної індукції в нерухомих точках магнітної системи статора, форма і гармонійний склад ЕРС його обмоток, їхні потужності. Результати розрахунків при несиметричному навантаженні порівнюються з аналогічними результатами при симетричному навантаженні. National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” 2016-10-31 Article Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2016.5.02 10.20998/2074-272X.2016.5.02 Electrical Engineering & Electromechanics; No. 5 (2016); 16-22 Электротехника и Электромеханика; № 5 (2016); 16-22 Електротехніка і Електромеханіка; № 5 (2016); 16-22 2309-3404 2074-272X en ru http://eie.khpi.edu.ua/article/view/2074-272X.2016.5.02/77271 http://eie.khpi.edu.ua/article/view/2074-272X.2016.5.02/77272 Copyright (c) 2016 V. I. Milykh https://creativecommons.org/licenses/by-nc/4.0 |