11 João B G F Silva - Innovative Solutions for Overhead Line Support

SC B2, Iceland Meeting July 3-7th, 2011

INNOVATIVE SOLUTIONS FOR OVERHEAD

LINE SUPPORTS

SC B2 Reykjavík Tutorial

Slide 01 of 48João B G F Silva [email protected]


1 - INTRODUCTION• Not a long time ago- Towers were not “pretty” nor “ugly”- Just essential

• Big changes mainly after the 60’s:- Thousands of OHL kms constructed- Electricity: from “ privilege” to “citizen

acquired right”, an obligation of the governments.- Presence of OH Lines in urban/rural areas.- Difficulty in obtaining new corridors- Growth in environmental conscience.


Slide 02 of 48


2 - EVOLUTION ON THE SOLUTIONS

2.1 – First Aesthetic Studies

H. Dreyfuss & Associates, 1968


Slide 03 of 48


H.Dreyfuss’ Pictorial Index – 47 Proposals


Slide 04 of 48


H.Dreyfuss ’ Proposal H.Dreyfuss ’ Proposal


Slide 05 of 48


2.2 – Cigré Studies

• 1986 Technical Brochure SC22 WG02: “The Environmental Impacts of High-Voltage Overhead Transmission Lines”.

• 1988 – Da Silva’s Research in ArchitectureSchool.- Federal University of Minas Gerais, Brazil:

Architecture School

- Year of survey: 1988

- 40 students splitted in 8 groups


Slide 06 of 48


- Investigation: Visual impact of OHL crossing the city of Belo Horizonte

- Focus on aesthetic of the towers

- Eight reports produced.

• 1999 – SC22 WG14 Technical Brochure: “HighVoltage Overhead Lines Environmental Concerns, Procedures, Impacts and Mitigations”.


Slide 07 of 48


2.3 – First Initiatives

• Compact as much as possible• Reduced number of elements• Transparent, invisible or camouflaged

Monopole Support Brazil

Portal GuyedSweden

Invisible Cross rope Argentina


Slide 08 of 48


3 – THE MONOPOLE SUPPORTThe most used aesthetic solution

Why ?Simplicity, elegance, beauty, slenderness, low visual impact, reduced area for settlement.

Pole Characteristics/Details

Overlapping Flanged

SQUARE HEXAGONAL OCTAGONAL DODECAGONAL CIRCULAR

Cross-Sections & Joints


Slide 09 of 48


Pole Characteristics/Details

FLANGED BASE PLATE

Anchor bolt templates

Typical Foundation DetailsDIRECTLY EMBEDMENT WITH DENSED SAND BOX

Nuts for adjusting


Slide 10 of 48


Structural Characteristics- Very flexible structures- Non linear structural analyses required

Pole deflections during Tests

- Pole top deformations:• At EDS: 1.5 to 2% H (height)• Ultimate stage: 4 to 5% H


Slide 11 of 48


4 – THE NEW CIGRE STUDIES

• New Working Group SC B2.08: Transmission Line Structures

•Task Force: TF3.1 – Innovative Solution for OverheadLine Supports

• Period: 1996 – 2009

Convenor: João BGF Silva – BR

Secretary: David Hughes/UK; F.Legeron / Canadá

• Questionnaire: Aesthetic solutions around the world.


Slide 12 of 48


4 – THE CIGRE SC B2.08 – TF3.1 Questionnaire

17 Country ResponsesCigré SC B2.08 data bank

•Australia•Brazil•Canada•Denmark•Finland•France

•Iceland•Italy •Japan•Norway•Romania•South Africa

•Spain•Sweden•Switzerland•United Kingdom•United States


Slide 13 of 48


Electra Magazine nr. 250 - June 2010;Cigré Technical Brochure 416 and 416A


Slide 14 of 48


5 – ADVANCED AESTHETIC SOLUTIONS

From the data bank:

• Unique solutions / For specific places

• Solution for a single line / or segment

• Standard aesthetic solutions

5.1 – Solutions for Specific Places: Fingrid first landscape towers: early 90’s


Slide 15 of 48


Finnish Solutions


1994: Hiversaloon, Turku. Antti Nurmesniemi 1995: "Sinikurjet", Espoo.Studio Nurmesniemi.

Slide 16 of 48


Finnish Solutions


1995: Virkkala. B. Selenius 1996: Tuusula. IVO Power Engineering.

Slide 17 of 48


Finnish Solutions


1998: Jyvaskylan, Jorma Valkama

Slide 18 of 48


5.2 – Solution for a Line / Segment of Line400kV OHL Aarhus / Aalborg-DenmarkEltra competition: 48 proposals

The Wining entry – Erik Bystrup


Slide 19 of 48



Danish Aesthetic Line

Suspention V-string Angle tower

Slide 20 of 48



Danish Aesthetic Line

Transition from Donau- todesign-towers

Shafts in the landscape

Slide 21 of 48


5.2 – Solution for a Line / Segment of LineThe 110kV Salmisaari-Meilahti TL, Helsinki.


Designed by Prof. Antti Nurmesniemi

Slide 22 of 48



The Salmisaari Meilahti OHL

CAD drawings The Result

Slide 23 of 48



The Salmisaari Meilahti OHL

Finishing

Manufacturing

Slide 24 of 48


5.3 – Standard Aesthetic Solutions: French Experience

EDF / RTE Competitions:- 1994 Architects/Designers- 2004/2005 Manufacturers

5.3.1 - The 1994 competition:- 121 proposals for 400kV OHL supports- As much freedom as possible for creativity- Just electrical clearances, phase arrangements


Slide 25 of 48


Marc MIMRAM I. Ritchie, K. Gustafson

The “ROSEAU” Tower

The “FOUGERE” Tower


The winners

Slide 26 of 48



French Experience

Perrault, Ove Arup Team

Card Game Swan-Neck

Euro RSCG Design, Tallon, Bet Jean Muller International Team

Slide 27 of 48



French Experience

The Heron Aesthetics

Giugiaro Design Team

Haute-Couture

Starck,Meda, Arsene-Henry and Triaud, de Miranda Team

Slide 28 of 48


3.5.2 - The 2004/2005 Manufacturers competition:

- Functional specifications defining:

• Position of phases• Number of circuits• Silhouette suggestion• Materials to be used

The winner: Transel, Linuhonnun


The “ARVERNE” Tower

Slide 29 of 48


6 – OH LINE TOWERS INTO ARTWORKS

• Aesthetic towers very successful in terms of publicacceptance.

• Towers evolving from OHL Supports to “urbanelectrical sculptures”.

• Finnish SculpturesFingrid landscape towers


Slide 30 of 48


Finnish SculpturesSC B2 Reykjavík Tutorial

Lempaala. Jorma ValkamaVihti, Nummela. Jorma Valkama

Slide 31 of 48


Finnish SculpturesSC B2 Reykjavík Tutorial

Vaasa, Palosaari. Jorma Valkama

Slide 32 of 48


• ICELANDIC Studies

2008 Landsnet competition (98 proposals).


Slide 33 of 48


Icelandic Studies


SuperstringYong-ho Shin

Walking Giants –The WinnerSebastian Krehn

Slide 34 of 48


Icelandic Studies


Slide 35 of 48


• New RTE Technique for Improving OHL Appearance

- “Art Installations” over existing OH Lines.- “Power Networks into Artworks” by Elena Paroucheva


Slide 36 of 48


Networks into Artworks SC B2 Reykjavík Tutorial

Art Installations on Overhead Line Supports

Towers Sculptures

Slide 37 of 48


Networks into Artworks SC B2 Reykjavík Tutorial

Art Installations on Overhead Line Supports

Aesthetic Works on Amnéville-Mortois OHL

Slide 38 of 48


Networks into Artworks

”Source Water” – Pylône nº 11 ”Source Energy” – Pylône nº 12


Slide 39 of 48


7 - ANALYSIS OF THE SOLUTIONS• Increasing environmental concern:

- Short lines, long lines- Urban, rural landscapes

• For long / rural lines, cost absolutely relevant issue:- Invisibility- Transparence- Slenderness- Compaction- Camouflaged structures


Slide 40 of 48


All together driven by cost!

Solutions for long OHL Towers


± 600kV DC Line FURNAS 230kV Line ELETRONORTE500kV HSIL Line FURNAS

Slide 41 of 48


• For short / urban lines, aesthetic towers more and more used as attractive solutions:

1992 Seville Expo Tower - SpainVaasa, Palosaari. Jorma Valkama


Nummela, Vihti. Konehuone/J. Valkama

Slide 42 of 48


• “Symbolic links” with “icones” of the societies:

- Architeture- History- Culture- Traditional symbols- Folklore- habits


Slide 43 of 48


Symbolism on Aesthetic Towers


The Mouse Head TowerThe McDonald’s towers

Slide 44 of 48




Hameenlinna Landscape Tower

Slide 45 of 48




”Haute Couture pour Pylône de Haute Tension”

Slide 46 of 48


8 – CONCLUSIONS

- Great growth on electricity demand will continue.

- Different challenges for utilities around the world to supply more power.

- Long, very long lines (up to 2500km) under construction in the world→ Aesthetic solutions driven by cost.


Slide 47 of 48


- Other regions of the world, environmental is “the real issue”.

→ Alternative solutions, visually attractive “landscape towers”.

→ Camouflaged lines, underground cables, or lines with “more aesthetic”, “more beautiful” towers!


Slide 48 of 48

11 João B G F Silva - Innovative Solutions for Overhead Line Support

Documents