Interaction of Structural Elements in the Overhead Transmission Power Line
- Authors: Senkin N.A.1, Filimonov A.S.1
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Affiliations:
- Saint-Petersburg State University of Architecture and Civil Engineering
- Issue: No 1-2 (2024)
- Pages: 101-108
- Section: Articles
- URL: https://ter-arkhiv.ru/0044-4472/article/view/635847
- DOI: https://doi.org/10.31659/0044-4472-2024-1-2-101-108
- ID: 635847
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Abstract
The analysis of the changes of tensile forces in conductors and earth wires is performed during their breakage and impact on the towers of overhead power line with a voltage of 330 kV. Based on the results, a mathematical model of a unified cable-stayed rod system consisting of steel towers, conductors and earth wires and insulating elements has been compiled. The system of equations of the model is solved iteratively using the MS Excel spreadsheet processor for various breakage cases. The dependences of tensile forces in conductors and earth wires during their breakage are presented, as well as the forces which correspond to an acting regime on towers in a linear circuit, taking into account the supporting effect of neighboring towers.
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About the authors
N. A. Senkin
Saint-Petersburg State University of Architecture and Civil Engineering
Author for correspondence.
Email: senkin1952@yandex.ru
Candidate of Sciences (Engineering)
Russian Federation, 4, 2nd Krasnoarmeyskaya Street, Saint Petersburg, 190005A. S. Filimonov
Saint-Petersburg State University of Architecture and Civil Engineering
Email: sanya328kms@yandex.ru
Master of Science, Engineer
Russian Federation, 4, 2nd Krasnoarmeyskaya Street, Saint Petersburg, 190005References
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Supplementary files
Supplementary Files
Action
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JATS XML
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Fig. 1. Photo of the damaged intermediate support No. 59 due to the emergency fall of intermediate support No. 60 on the double–chain 220 kV Dorokhovo – Sloboda overhead line in the Moscow region (03.08.2016.) due to hurricane wind with characteristic damage to neighboring supports No. 57–59 (loss of stability of belts and braces in the 8th panel from below)
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Fig. 2. Operation diagram of the line in case of wire breakage
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Fig. 3. Movement of supports and garlands of insulators δ, mm, when the wire breaks in span No. 1
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Fig. 4. The gravity force T, даN(kg)3, in the wire when it breaks in span No. 1
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Fig. 5. Diagram of the 330 kV overhead line section
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Fig. 6. 330 kV overhead line supports: a – intermediate support P330 h-1; b – anchor-angular support U330 h-1+14
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Fig. 7. Changes in the gravity forces T in the lightning rod when it breaks or one of the wires breaks
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Fig. 8. The force of gravity T in the wires and lightning rod when wire No. 3 is broken
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Fig. 9. The ratio of the gravity force in the wire after breakage to its initial tension in the span
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11.
Fig. 10. The forces acting on the supports after wire breakage No. 3
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