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Overhead Lines

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Electricity Supply Systems of the Future

Part of the book series: CIGRE Green Books ((CS))

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Abstract

Existing overhead lines of the transmission grid have been designed to build up a network or to strengthen it—as it was seen at the time of their erection. Due to the liberalization of the electricity market in the last years, the demand for production and consumption of electricity has changed. Also, more and more renewable energy sources (wind, solar, water) need to be integrated into the exiting transmission grid. Overloads of the lines must be prevented. Several ways to overcome these problems exist. Among them are:

  • build new lines

  • change of components on existing lines (e.g. other conductors with higher current capacity)

  • increase the line voltage on existing lines (e.g. from 220 to 380 kV) or change from AC to DC

  • application of thermal rating and dynamic line rating on existing lines.

The chapter gives an overview which possibilities to strengthen the OHL grid exist and which approaches can be seen for the future. Other possibilities than OHL exist of course, but this is not the scope of Study Committee B2 “Overhead Lines” and will be covered by other Study Committees. For high voltage, extra high voltage and ultra-high voltage, the big majority of new lines will be overhead and will especially remain the most used technique to transport electric energy over long distances with high capacity. Long-term reliability, long service life, cost efficiency and consideration of environmental aspects are required. Modern approaches, materials, methods and design help to fulfil these requirements.

On behalf of CIGRE Study Committee B2.

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References

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  31. CIGRE publication 601: Guide for Thermal Rating Calculations of Overhead Lines (2014)

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  32. CIGRE publication 631: Coatings for Protecting Overhead Power Network Equipment in Winter Conditions (2015)

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Relevant active Working Groups of SC B2

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  5. WG B2.59: Forecasting Dynamic Line Ratings

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  6. WG B2.62: Compact HVDC Overhead Lines.”

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  7. WG B2.63: Compact AC Overhead Lines

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  8. WG B2.61: Transmission Line Structures with Fibre Reinforced Polymer (FRP) Composites

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  9. WG B2.65: Detection, Prevention and Repair of Sub surface Corrosion in Overhead Line Supports, Anchors and Foundations

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  10. WG B2.67: Assessment and Testing of Wood and Alternative Material Type Poles

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  11. WG B2.66: Safe Handling and Installation Guide for High Temperature Low-sag (HTLS) Conductors

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  12. WG B2.68: Sustainability of OHL Conductors and Fittings—Conductor Condition Assessment and Life Extension

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Author information

Authors and Affiliations

  1. CIGRE, Paris, France

    Herbert Lugschitz, Taku Yamakawa & Zibby Kieloch

Authors
  1. Herbert Lugschitz
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  2. Taku Yamakawa
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  3. Zibby Kieloch
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Corresponding author

Correspondence to Herbert Lugschitz .

Editor information

Editors and Affiliations

  1. Study Committee C6, National Technical University of Athens, Zografou, Greece

    Nikos Hatziargyriou

  2. Study Committee B5, Tecnix Engineering and Architecture Ltd., Recife, Brazil

    Iony Patriota de Siqueira

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Lugschitz, H., Yamakawa, T., Kieloch, Z. (2020). Overhead Lines. In: Hatziargyriou, N., de Siqueira, I. (eds) Electricity Supply Systems of the Future. CIGRE Green Books(). Springer, Cham. https://doi.org/10.1007/978-3-030-44484-6_6

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  • DOI: https://doi.org/10.1007/978-3-030-44484-6_6

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-44483-9

  • Online ISBN: 978-3-030-44484-6

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