IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v17y2024i2p305-d1314774.html
   My bibliography  Save this article

Calculation Methods of High-Voltage Direct Current (HVDC) Line Sag Considering Meteorology

Author

Listed:
  • Xin Li

    (Northwest Branch of State Grid Corporation of China, Xi’an 710002, China)

  • Zuibing Xie

    (Northwest Branch of State Grid Corporation of China, Xi’an 710002, China)

  • Linping Zeng

    (Northwest Branch of State Grid Corporation of China, Xi’an 710002, China)

  • Long Zhao

    (School of Mechano-Electronic Engineering, Xidian Univerisity, Xi’an 710126, China)

Abstract

Sag is one of the important indicators for judging whether a transmission line is safe. The existing sag calculation method does not consider the temperature difference between conductor strands, causing the calculated results to often deviate from the values measured with a theodolite. In this article, a sag calculation method considering the temperature difference between strands is proposed. First, finite element analysis and experiments were used to analyze the temperature differences between each area and layer of the conductor when the wind blew the conductor, and then a correction calculation model for the conductor sag was proposed. Next, a sag monitoring system based on four-point temperature measurement was designed. Finally, the method was applied to a ±400 kV transmission line in Qinghai Province, China. The results show that after considering the temperature difference in the conductor strands, the error of the sag calculation result is much smaller than that without considering the temperature difference in the conductor strands, and the maximum relative error is reduced from 7.86% to less than 2%.

Suggested Citation

  • Xin Li & Zuibing Xie & Linping Zeng & Long Zhao, 2024. "Calculation Methods of High-Voltage Direct Current (HVDC) Line Sag Considering Meteorology," Energies, MDPI, vol. 17(2), pages 1-13, January.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:2:p:305-:d:1314774
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/17/2/305/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/17/2/305/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Yongdou Liu & Zhiwei Chen & Quan Gu, 2020. "Numerical Algorithms for Calculating Temperature, Layered Stress, and Critical Current of Overhead Conductors," Mathematical Problems in Engineering, Hindawi, vol. 2020, pages 1-14, April.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.

      More about this item

      Keywords

      conductors; sag; temperature;
      All these keywords.

      Statistics

      Access and download statistics

      Corrections

      All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:17:y:2024:i:2:p:305-:d:1314774. See general information about how to correct material in RePEc.

      If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

      If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

      If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

      For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

      Please note that corrections may take a couple of weeks to filter through the various RePEc services.

      IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.