Methods of Current Limitation in Low Voltage (up to 1 kV) Electric Networks
The article discusses and systematizes the causes of high values of short-circuit currents in electrical networks up to 1 kV and indicates their negative consequences. A brief analysis of some current limiting methods (both with and without additional investment) is given, which makes it possible to...
| Main Authors: | , |
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| Format: | Article |
| Language: | Russian |
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Belarusian National Technical University
2021-12-01
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| Series: | Izvestiâ Vysših Učebnyh Zavedenij i Ènergetičeskih ob Edinennij SNG. Ènergetika |
| Subjects: | |
| Online Access: | https://energy.bntu.by/jour/article/view/2118 |
| _version_ | 1797879725010452480 |
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| author | A. Yu. Kapustsinski S. V. Kanstantsinava |
| author_facet | A. Yu. Kapustsinski S. V. Kanstantsinava |
| author_sort | A. Yu. Kapustsinski |
| collection | DOAJ |
| description | The article discusses and systematizes the causes of high values of short-circuit currents in electrical networks up to 1 kV and indicates their negative consequences. A brief analysis of some current limiting methods (both with and without additional investment) is given, which makes it possible to reduce the negative effects when significant short-circuit currents occur. The variants of the implementation of these current limiting methods recommended for study at the design stage or when replacing equipment that has exhausted its resource, are considered. The advantages and disadvantages of the methods of limiting short-circuit currents described in the article are indicated. Options for connecting equipment with low power consumption to nodes of the electrical network up to 1 kV with high values of short-circuit currents are also considered. Special attention is paid to current-limiting protection devices, a detailed description of the design of some of them is given, the advantages of their use in comparison with other current-limiting methods are indicated, the corresponding graphs of the limitation of the periodic component of the short-circuit current, shock short-circuit current and thermal pulse are presented. Based on the analysis of graphic materials, the issue of ensuring the selectivity of protections is considered. The degree of prevalence of equipment with the property of current limitation is determined. A method for determining selective current-limiting protection devices is given, viz. the method of energy selectivity, the corresponding graphs for determining energy selectivity are presented. The physics allowing to determine the degree of efficiency of limiting the short-circuit current is described. Recommendations on the use of current-limiting equipment are proposed. |
| first_indexed | 2024-04-10T02:51:59Z |
| format | Article |
| id | doaj.art-424ab99988514da6bd70d278508df00a |
| institution | Directory Open Access Journal |
| issn | 1029-7448 2414-0341 |
| language | Russian |
| last_indexed | 2024-04-10T02:51:59Z |
| publishDate | 2021-12-01 |
| publisher | Belarusian National Technical University |
| record_format | Article |
| series | Izvestiâ Vysših Učebnyh Zavedenij i Ènergetičeskih ob Edinennij SNG. Ènergetika |
| spelling | doaj.art-424ab99988514da6bd70d278508df00a2023-03-13T07:41:52ZrusBelarusian National Technical UniversityIzvestiâ Vysših Učebnyh Zavedenij i Ènergetičeskih ob Edinennij SNG. Ènergetika1029-74482414-03412021-12-0164649250410.21122/1029-7448-2021-64-6-492-5041785Methods of Current Limitation in Low Voltage (up to 1 kV) Electric NetworksA. Yu. Kapustsinski0S. V. Kanstantsinava1Белорусский национальный технический университет; «ЭНЭКА» ОДОБелорусский национальный технический университетThe article discusses and systematizes the causes of high values of short-circuit currents in electrical networks up to 1 kV and indicates their negative consequences. A brief analysis of some current limiting methods (both with and without additional investment) is given, which makes it possible to reduce the negative effects when significant short-circuit currents occur. The variants of the implementation of these current limiting methods recommended for study at the design stage or when replacing equipment that has exhausted its resource, are considered. The advantages and disadvantages of the methods of limiting short-circuit currents described in the article are indicated. Options for connecting equipment with low power consumption to nodes of the electrical network up to 1 kV with high values of short-circuit currents are also considered. Special attention is paid to current-limiting protection devices, a detailed description of the design of some of them is given, the advantages of their use in comparison with other current-limiting methods are indicated, the corresponding graphs of the limitation of the periodic component of the short-circuit current, shock short-circuit current and thermal pulse are presented. Based on the analysis of graphic materials, the issue of ensuring the selectivity of protections is considered. The degree of prevalence of equipment with the property of current limitation is determined. A method for determining selective current-limiting protection devices is given, viz. the method of energy selectivity, the corresponding graphs for determining energy selectivity are presented. The physics allowing to determine the degree of efficiency of limiting the short-circuit current is described. Recommendations on the use of current-limiting equipment are proposed.https://energy.bntu.by/jour/article/view/2118короткое замыканиетокоограничениеавтоматический выключательпредохранителькоэффициент токоограниченияхарактеристика токоограничениятокоограничивающая плавкая вставкаотключениезащита от коротких замыканийрасцепительэнергетическая селективностьинтеграл джоулятермический импульс |
| spellingShingle | A. Yu. Kapustsinski S. V. Kanstantsinava Methods of Current Limitation in Low Voltage (up to 1 kV) Electric Networks Izvestiâ Vysših Učebnyh Zavedenij i Ènergetičeskih ob Edinennij SNG. Ènergetika короткое замыкание токоограничение автоматический выключатель предохранитель коэффициент токоограничения характеристика токоограничения токоограничивающая плавкая вставка отключение защита от коротких замыканий расцепитель энергетическая селективность интеграл джоуля термический импульс |
| title | Methods of Current Limitation in Low Voltage (up to 1 kV) Electric Networks |
| title_full | Methods of Current Limitation in Low Voltage (up to 1 kV) Electric Networks |
| title_fullStr | Methods of Current Limitation in Low Voltage (up to 1 kV) Electric Networks |
| title_full_unstemmed | Methods of Current Limitation in Low Voltage (up to 1 kV) Electric Networks |
| title_short | Methods of Current Limitation in Low Voltage (up to 1 kV) Electric Networks |
| title_sort | methods of current limitation in low voltage up to 1 kv electric networks |
| topic | короткое замыкание токоограничение автоматический выключатель предохранитель коэффициент токоограничения характеристика токоограничения токоограничивающая плавкая вставка отключение защита от коротких замыканий расцепитель энергетическая селективность интеграл джоуля термический импульс |
| url | https://energy.bntu.by/jour/article/view/2118 |
| work_keys_str_mv | AT ayukapustsinski methodsofcurrentlimitationinlowvoltageupto1kvelectricnetworks AT svkanstantsinava methodsofcurrentlimitationinlowvoltageupto1kvelectricnetworks |