A CHOICE OF CRITICAL SECTIONS OF ELECTRIC WIRES AND CABLES IN POWER CIRCUITS OF ELECTRICAL EQUIPMENT OF POWER INDUSTRY
Purpose. Implementation of close calculation determination of critical sections of SCi and critical amplitudes of density of alternating current δCi of frequency 50 Hz in wires and cables of power circuits of electrical equipment of power industry, characterized flowing in it at malfunctions of oper...
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National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine
2019
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| Online Access: | http://eie.khpi.edu.ua/article/view/2074-272X.2019.5.06 |
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Electrical Engineering & Electromechanics |
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2019-11-04T14:26:06Z |
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power industrial electrical equipment electric wires and cables of circuits of electrical equipment calculation choice of critical sections of wires and cables in the circuits of electrical equipment 621.3.022 621.315.3 537.311.8 |
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power industrial electrical equipment electric wires and cables of circuits of electrical equipment calculation choice of critical sections of wires and cables in the circuits of electrical equipment 621.3.022 621.315.3 537.311.8 Baranov, M. I. A CHOICE OF CRITICAL SECTIONS OF ELECTRIC WIRES AND CABLES IN POWER CIRCUITS OF ELECTRICAL EQUIPMENT OF POWER INDUSTRY |
| topic_facet |
промышленная электроэнергетика электрооборудование электрические провода и кабели цепей электрооборудования расчетный выбор критических сечений проводов и кабелей в цепях электрооборудования 621.3.022 621.315.3 537.311.8 power industrial electrical equipment electric wires and cables of circuits of electrical equipment calculation choice of critical sections of wires and cables in the circuits of electrical equipment 621.3.022 621.315.3 537.311.8 |
| format |
Article |
| author |
Baranov, M. I. |
| author_facet |
Baranov, M. I. |
| author_sort |
Baranov, M. I. |
| title |
A CHOICE OF CRITICAL SECTIONS OF ELECTRIC WIRES AND CABLES IN POWER CIRCUITS OF ELECTRICAL EQUIPMENT OF POWER INDUSTRY |
| title_short |
A CHOICE OF CRITICAL SECTIONS OF ELECTRIC WIRES AND CABLES IN POWER CIRCUITS OF ELECTRICAL EQUIPMENT OF POWER INDUSTRY |
| title_full |
A CHOICE OF CRITICAL SECTIONS OF ELECTRIC WIRES AND CABLES IN POWER CIRCUITS OF ELECTRICAL EQUIPMENT OF POWER INDUSTRY |
| title_fullStr |
A CHOICE OF CRITICAL SECTIONS OF ELECTRIC WIRES AND CABLES IN POWER CIRCUITS OF ELECTRICAL EQUIPMENT OF POWER INDUSTRY |
| title_full_unstemmed |
A CHOICE OF CRITICAL SECTIONS OF ELECTRIC WIRES AND CABLES IN POWER CIRCUITS OF ELECTRICAL EQUIPMENT OF POWER INDUSTRY |
| title_sort |
choice of critical sections of electric wires and cables in power circuits of electrical equipment of power industry |
| title_alt |
ВЫБОР КРИТИЧЕСКИХ СЕЧЕНИЙ ЭЛЕКТРИЧЕСКИХ ПРОВОДОВ И КАБЕЛЕЙ В СИЛОВЫХ ЦЕПЯХ ЭЛЕКТРООБОРУДОВАНИЯ ПРОМЫШЛЕННОЙ ЭЛЕКТРОЭНЕРГЕТИКИ |
| description |
Purpose. Implementation of close calculation determination of critical sections of SCi and critical amplitudes of density of alternating current δCi of frequency 50 Hz in wires and cables of power circuits of electrical equipment of power industry, characterized flowing in it at malfunctions of operation current ik(t) of short circuit (SC) with set amplitude-temporal parameters (ATP). Methodology. Scientific and technical bases of power engineering, electrophysics bases of technique of high-voltage and large pulsed currents, theoretical bases of the electrical engineering. Results. The results of the developed electrical engineering approach are resulted in a calculation choice on the condition of electric explosion (EE) of current-carrying parts of cable and conductor products (CCP) of critical sections of SCi for the copper (aluminum) cores of the uninsulated wires, and also for the insulated wires and cables with a polyvinilkhloride (PVC), rubber (R) and polyethylene (PET) insulation with copper (aluminum) cores (shells) on which in the power circuits of electrical equipment of the general industrial equipment in malfunction the current of SC ik(t) flows with set ATP. On the basis of determination of sizes of the real critical sections SCi for the indicated wires and cables the calculation numeral estimation of critical amplitudes of density δCi of SC current ik(t) is executed with set ATP in current-carrying parts of investigated CCP of power circuits of the examined electrical equipment. It is determined that in the power circuits of electric equipment of the general industrial installations (for permanent time of slump of Ta=50 ms of аperiodic to the constituent of current of SC) critical amplitudes of density δCi of SC current ik(t) at time of his disconnecting tk=100 ms in copper (aluminum) cores for the uninsulated wires and insulated wires (cables) with copper (aluminum) cores (shells), PVH, R and PET it is numeral made an insulation according to approximately 1,57 (1,18) kA/mm2. At time of disconnecting tk=160 ms of SC current ik(t) in the power circuits of the examined electrical equipment (Ta=50 ms) critical amplitudes of density δCi of SC current ik(t) for the copper (aluminum) cores (shells) of indicated CCP become accordingly numeral equal approximately 1,33 (0,99) kA/mm2. Originality. First by a calculation way taking into account information for ATP of SC current ik(t) and quantitative values of time of his disconnecting tk in the power circuits of electrical equipment of the general industrial installations the numerical values of critical sections SCi and critical amplitudes of density δCi of AC SC current ik(t) are certain for the uninsulated wires, and also insulated wires and cables with copper (aluminum) cores (shells), PVH, R and PET insulation. Practical value. Obtained results for the critical sections SCi and amplitudes of density δCi of AC SC current ik(t) of frequency 50 Hz (at the period of oscillations of Tp=20 ms for of periodic constituent of emergency current of SC) can be utilized in power industry in practice at a choice thermally by a bar to the action of large SC currents ik(t) of CCP with copper (aluminum) bars (shells), intended for reliable operation in the power circuits of electrical equipment of industrial power industry. |
| publisher |
National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine |
| publishDate |
2019 |
| url |
http://eie.khpi.edu.ua/article/view/2074-272X.2019.5.06 |
| work_keys_str_mv |
AT baranovmi achoiceofcriticalsectionsofelectricwiresandcablesinpowercircuitsofelectricalequipmentofpowerindustry AT baranovmi vyborkritičeskihsečenijélektričeskihprovodovikabelejvsilovyhcepâhélektrooborudovaniâpromyšlennojélektroénergetiki AT baranovmi choiceofcriticalsectionsofelectricwiresandcablesinpowercircuitsofelectricalequipmentofpowerindustry |
| first_indexed |
2025-07-17T11:47:46Z |
| last_indexed |
2025-07-17T11:47:46Z |
| _version_ |
1850411860363313152 |
| spelling |
eiekhpieduua-article-1818852019-11-04T14:26:06Z A CHOICE OF CRITICAL SECTIONS OF ELECTRIC WIRES AND CABLES IN POWER CIRCUITS OF ELECTRICAL EQUIPMENT OF POWER INDUSTRY ВЫБОР КРИТИЧЕСКИХ СЕЧЕНИЙ ЭЛЕКТРИЧЕСКИХ ПРОВОДОВ И КАБЕЛЕЙ В СИЛОВЫХ ЦЕПЯХ ЭЛЕКТРООБОРУДОВАНИЯ ПРОМЫШЛЕННОЙ ЭЛЕКТРОЭНЕРГЕТИКИ Baranov, M. I. промышленная электроэнергетика электрооборудование электрические провода и кабели цепей электрооборудования расчетный выбор критических сечений проводов и кабелей в цепях электрооборудования 621.3.022 621.315.3 537.311.8 power industrial electrical equipment electric wires and cables of circuits of electrical equipment calculation choice of critical sections of wires and cables in the circuits of electrical equipment 621.3.022 621.315.3 537.311.8 Purpose. Implementation of close calculation determination of critical sections of SCi and critical amplitudes of density of alternating current δCi of frequency 50 Hz in wires and cables of power circuits of electrical equipment of power industry, characterized flowing in it at malfunctions of operation current ik(t) of short circuit (SC) with set amplitude-temporal parameters (ATP). Methodology. Scientific and technical bases of power engineering, electrophysics bases of technique of high-voltage and large pulsed currents, theoretical bases of the electrical engineering. Results. The results of the developed electrical engineering approach are resulted in a calculation choice on the condition of electric explosion (EE) of current-carrying parts of cable and conductor products (CCP) of critical sections of SCi for the copper (aluminum) cores of the uninsulated wires, and also for the insulated wires and cables with a polyvinilkhloride (PVC), rubber (R) and polyethylene (PET) insulation with copper (aluminum) cores (shells) on which in the power circuits of electrical equipment of the general industrial equipment in malfunction the current of SC ik(t) flows with set ATP. On the basis of determination of sizes of the real critical sections SCi for the indicated wires and cables the calculation numeral estimation of critical amplitudes of density δCi of SC current ik(t) is executed with set ATP in current-carrying parts of investigated CCP of power circuits of the examined electrical equipment. It is determined that in the power circuits of electric equipment of the general industrial installations (for permanent time of slump of Ta=50 ms of аperiodic to the constituent of current of SC) critical amplitudes of density δCi of SC current ik(t) at time of his disconnecting tk=100 ms in copper (aluminum) cores for the uninsulated wires and insulated wires (cables) with copper (aluminum) cores (shells), PVH, R and PET it is numeral made an insulation according to approximately 1,57 (1,18) kA/mm2. At time of disconnecting tk=160 ms of SC current ik(t) in the power circuits of the examined electrical equipment (Ta=50 ms) critical amplitudes of density δCi of SC current ik(t) for the copper (aluminum) cores (shells) of indicated CCP become accordingly numeral equal approximately 1,33 (0,99) kA/mm2. Originality. First by a calculation way taking into account information for ATP of SC current ik(t) and quantitative values of time of his disconnecting tk in the power circuits of electrical equipment of the general industrial installations the numerical values of critical sections SCi and critical amplitudes of density δCi of AC SC current ik(t) are certain for the uninsulated wires, and also insulated wires and cables with copper (aluminum) cores (shells), PVH, R and PET insulation. Practical value. Obtained results for the critical sections SCi and amplitudes of density δCi of AC SC current ik(t) of frequency 50 Hz (at the period of oscillations of Tp=20 ms for of periodic constituent of emergency current of SC) can be utilized in power industry in practice at a choice thermally by a bar to the action of large SC currents ik(t) of CCP with copper (aluminum) bars (shells), intended for reliable operation in the power circuits of electrical equipment of industrial power industry. Приведены результаты разработанного электротехнического подхода к расчетному выбору по условию электрического взрыва (ЭВ) токонесущих частей кабельно-проводниковой продукции критических сечений SCi неизолированных проводов, а также изолированных проводов и кабелей с поливинилхлоридной (ПВХ), резиновой (Р) и полиэтиленовой (ПЭТ) изоляцией с медными (алюминиевыми) жилами (оболочками), по которым в силовых цепях электрооборудования общепромышленного назначения в аварийном режиме протекает ток ik(t) короткого замыкания (КЗ) с заданными амплитудно-временными параметрами (АВП). На основании данного подхода осуществлен реальный выбор критических сечений SCi для указанных проводов (кабелей) силовых цепей рассматриваемого электрооборудования. Выполнена расчетная численная оценка критических амплитуд плотностей δCi тока ik(t) КЗ с заданными АВП в проводах и кабелях силовых цепей указанного электрооборудования. Полученные данные будут способствовать обеспечению термической стойкости электрических неизолированных проводов, а также проводов и кабелей с ПВХ, Р и ПЭТ изоляцией, широко применяемых в силовых цепях электрооборудования общепромышленного назначения. National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2019-10-28 Article Article Peer-reviewed Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2019.5.06 10.20998/2074-272X.2019.5.06 Electrical Engineering & Electromechanics; No. 5 (2019); 35-39 Электротехника и Электромеханика; № 5 (2019); 35-39 Електротехніка і Електромеханіка; № 5 (2019); 35-39 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/2074-272X.2019.5.06/181782 http://eie.khpi.edu.ua/article/view/2074-272X.2019.5.06/181783 Copyright (c) 2019 M. I. Baranov https://creativecommons.org/licenses/by-nc/4.0 |