KEPCO Journal on Electric Power and Energy

Korea Electric Power Corporation (한국전력공사)
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Development of Compact Towers with Insulation Arm in Korea

절연암 적용 컴팩트 철탑 개발

  • Lee, Won-kyo (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Yun, Cheol-Hee (KEPCO Research Institute, Korea Electric Power Corporation)
  • Received : 2018.07.18
  • Accepted : 2018.10.24
  • Published : 2018.12.30
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Abstract

Lattice towers and tubular steel poles have been commonly used for electrical power transmission in Korea as well as the other countries. They are durable, structurally stable, simple and can easily be constructed in limited spaces. However, residents are opposed to construct transmission lattice towers in their areas because they are not visually attractive, and electrical field occur at the transmission lines. Underground transmissions have been used instead of the traditional towers to resolve these problems, however they are not cost effective to construct and run. Therefore, we have developed compact towers that are more attractive, well blend into the surrounding environment and much more economical than underground transmissions. This paper shows the design of a compact towers with insulation arm, in order to reduce the height of tower and the separation between phases. The compact tower can be installed in a narrow right-of-way. Insulation arms are easily applied to lattice and steel tubular towers instead of steel arms. Compact towers with insulation arm are also considered as a solution to have public acceptance or to create a familiar atmosphere among towers and people. Compact tower compared with a conventional tower, insulation arms reduces the width and height of the tower by 20% and 15% respectively.

Keywords

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Fig. 1. Pivoting horizontal‐vee.

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Fig. 1. Pivoting horizontal‐vee.

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Fig. 2. 154 kV Pivoting horizontal‐vee.

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Fig. 2. 154 kV Pivoting horizontal‐vee.

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Fig. 3. Tower test for 154 kV compact tower (Landscpe, Rigging diagram).

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Fig. 3. Tower test for 154 kV compact tower (Landscpe, Rigging diagram).

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Fig. 4. 154 kV Tublar steel pole. (a) Conveintional tower, (b) Comapact tower.

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Fig. 4. 154 kV Tublar steel pole. (a) Conveintional tower, (b) Comapact tower.

Table 1. Tower classification of KEPCO standard (DS‐1111)

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Table 1. Tower classification of KEPCO standard (DS‐1111)

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References

  1. Working Group SC B2.08 CIGRE, "Innovative Solutions for Overhead Line Supports" (Technical Brochure 416, June 2010, pages 1-58).
  2. KEPCO Design Standard on structures for Transmission (DS‐1111, 2013).
  3. W. Dreyer, "Special features in the design of transmission tower lines as imposed by electrical conditions" (Journal of the American Institute of Electrical Engineers, 1923).
  4. ASCE, "Design of Steel Transmission Pole Structures", (ASCE/SEI 48‐11, 2011).
  5. Anthony C. Baker, "Braced Insulator Assemblies" (IEEE T&D Conference and Exposition, Chicago, IL April 2008).
  6. Y. F Gao, "Electric Field and Electromagnetic Envrionment analyses of a 500 kV Composite Cross Arm", (IEEE Conf. Electr. Insul. Dielectr.Phenomena (CEIDP), pp.399-402, 2015).