Design of Large Connectors of Overhead Power Lines
It is found that the voltage at the lowest points of the wire or cable sag and at the points of their suspension on the pillars in the same span, determined in accordance with the properties of a perfectly flexible filament (similar to which the wires and cables are located in the span), differ slig...
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| Format: | Article |
| Language: | Russian |
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Belarusian National Technical University
2018-10-01
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| Series: | Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика |
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| Online Access: | https://energy.bntu.by/jour/article/view/1398 |
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| author | M. A. Korotkevich N. V. Prokofieva |
| author_facet | M. A. Korotkevich N. V. Prokofieva |
| author_sort | M. A. Korotkevich |
| collection | DOAJ |
| description | It is found that the voltage at the lowest points of the wire or cable sag and at the points of their suspension on the pillars in the same span, determined in accordance with the properties of a perfectly flexible filament (similar to which the wires and cables are located in the span), differ slightly, and taking the difference of the mentioned values into account is only of methodologycal importance. The article presents the results of the calculation of wire and cable sag of large spans of power transmission line of 500 m or more length using both the traditional theory of the catenary line and the theory of equal resistance, when the cross-sectional area of a wire or cable, proportional to their tension, is considered variable in the span length, which provides the same probability of breaking them at any point of the span. When calculating the wires and cables in normal and emergency conditions, the largest sags are determined, which take place either at a higher ambient temperature or at a load of the wire with ice. The wire must be mounted in such a way as to ensure the normalized permissible dimensions to crossed engineering structures, water barriers or land, that are determined depending on the nominal voltage of the line. It is noted that the values of the wire and cable sags determined using the theory of the catenary line for the transition spans are less (although slightly) as compared to the data obtained on the basis of the theory of the equal resistance circuit. This must be taken into account in the design process. |
| format | Article |
| id | doaj-art-fad196ccfeed45d08a5088c4b5c3459f |
| institution | Kabale University |
| issn | 1029-7448 2414-0341 |
| language | Russian |
| publishDate | 2018-10-01 |
| publisher | Belarusian National Technical University |
| record_format | Article |
| series | Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика |
| spelling | doaj-art-fad196ccfeed45d08a5088c4b5c3459f2025-02-03T05:35:38ZrusBelarusian National Technical UniversityИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика1029-74482414-03412018-10-0161543243910.21122/1029-7448-2018-61-5-432-4391344Design of Large Connectors of Overhead Power LinesM. A. Korotkevich0N. V. Prokofieva1Belarusian National Technical UniversityBelarusian National Technical UniversityIt is found that the voltage at the lowest points of the wire or cable sag and at the points of their suspension on the pillars in the same span, determined in accordance with the properties of a perfectly flexible filament (similar to which the wires and cables are located in the span), differ slightly, and taking the difference of the mentioned values into account is only of methodologycal importance. The article presents the results of the calculation of wire and cable sag of large spans of power transmission line of 500 m or more length using both the traditional theory of the catenary line and the theory of equal resistance, when the cross-sectional area of a wire or cable, proportional to their tension, is considered variable in the span length, which provides the same probability of breaking them at any point of the span. When calculating the wires and cables in normal and emergency conditions, the largest sags are determined, which take place either at a higher ambient temperature or at a load of the wire with ice. The wire must be mounted in such a way as to ensure the normalized permissible dimensions to crossed engineering structures, water barriers or land, that are determined depending on the nominal voltage of the line. It is noted that the values of the wire and cable sags determined using the theory of the catenary line for the transition spans are less (although slightly) as compared to the data obtained on the basis of the theory of the equal resistance circuit. This must be taken into account in the design process.https://energy.bntu.by/jour/article/view/1398overhead transmission linea large transitionwater barrierdimensionsag |
| spellingShingle | M. A. Korotkevich N. V. Prokofieva Design of Large Connectors of Overhead Power Lines Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика overhead transmission line a large transition water barrier dimension sag |
| title | Design of Large Connectors of Overhead Power Lines |
| title_full | Design of Large Connectors of Overhead Power Lines |
| title_fullStr | Design of Large Connectors of Overhead Power Lines |
| title_full_unstemmed | Design of Large Connectors of Overhead Power Lines |
| title_short | Design of Large Connectors of Overhead Power Lines |
| title_sort | design of large connectors of overhead power lines |
| topic | overhead transmission line a large transition water barrier dimension sag |
| url | https://energy.bntu.by/jour/article/view/1398 |
| work_keys_str_mv | AT makorotkevich designoflargeconnectorsofoverheadpowerlines AT nvprokofieva designoflargeconnectorsofoverheadpowerlines |