INNOVATIVE SOLUTIONS FOR OVERHEAD LINE SUPPORTS … · INNOVATIVE SOLUTIONS FOR OVERHEAD LINE SUPPORTS OHL TOWERS INTO ARTWORKS Congreso Bienal Internacional CIGRE 2009 Suministro
Post on 30-Nov-2018
217 Views
Preview:
Transcript
INNOVATIVE SOLUTIONS FOR OVERHEAD LINE SUPPORTS
OHL TOWERS INTO ARTWORKS
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Santiago, Chile, 10-11 Nov 2009
01 of 27
1 - INTRODUCTION
• Some time ago
- Towers were not “pretty” nor “ugly”
- Just essential
• Big changes mainly after 60’s:
- Thousands of OHL kms constructed
- Electricity: from “a privilege” to a “social
acquired right”, an obligation of the governments.
- Presence of OH Lines in urban/rural areas.
- Difficulty in obtaining new corridors
- Growth in environmental conscience.
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Santiago, Chile, 10-11 Nov 2009
02 of 27
2 - EVOLUTIONS ON THE SOLUTIONS
2.1 – First Aesthetic Studies
H. Dreyfuss & Associates, 1968
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Santiago, Chile, 10-11 Nov 2009
03 of 27
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Santiago, Chile, 10-11 Nov 2009
04 of 27
H.Dreyfuss’ Pictorial Index
H.Dreyfuss Proposal 1 H.Dreyfuss Proposal 2
Santiago, Chile, 10-11 Nov 2009
05 of 27
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Santiago, Chile, 10-11 Nov 2009
06 of 27
2.2 – Cigré Studies
• 1986 Technical Brochure SC22 WG02: “The
Environmental Impacts of High-Voltage Overhead
Transmission Lines”.
• 1988 – Da Silva’s Research in Architecture
School.
• 1999 – SC22 WG14 Technical Brochure: “High
Voltage Overhead Lines Environmental Concerns,
Procedures, Impacts and Mitigations”.
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Da Silva’s
Survey
Santiago, Chile, 10-11 Nov 2009
07 of 27
2.3 – First Initiatives
• Compact as much as possible
• Reduced number of elements
• Transparent, invisible or camouflaged
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Monopole Support
Brazil
Portal Guyed
Sweden
Invisible Cross rope
Argentina
Santiago, Chile, 10-11 Nov 2009
08 of 27
3 – THE MONOPOLE SUPPORT
The most used aesthetic solution
Why ?
Simplicity, elegance, beauty, slenderness, low
visual impact, reduced area for settlement.
Pole Characteristics/Details
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Overlapping Flanged
SQUARE HEXAGONAL OCTAGONAL DODECAGONAL CIRCULAR
Pole Cross-Sections & Joints
Santiago, Chile, 10-11 Nov 2009
09 of 27
Pole Characteristics/Details
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
DIRECTLY EMBEDMENT WITH DENSED SAND BOX FLANGED BASE PLATE
Nuts for adjusting
Anchor bolt
templates
Typical Pole Foundation Type Details
Santiago, Chile, 10-11 Nov 2009
10 of 27
Structural Characteristics
- Very flexible structures
- Non linear structural analyses
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Pole deflections during Tests
- Poles top deformations:
• At EDS: 1.5 to 2% height (H)
• Ultimate stage: 4 to 5% H
Santiago, Chile, 10-11 Nov 2009
11 of 27
4 – THE NEW CIGRE STUDIES
• New Study Committee B2: Overhead Lines
• Working Group WG08: Transmission Line Structures
• Task Force: TF3.1 – Innovative Solution for Overhead
Line Supports
• Period: 1995 – 2009
Convenor: João BGF Silva – BR
Secretary: David Hughes/UK; F.Legeron – Canadá
• Questionnaire: Aesthetic solutions around the world.
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Santiago, Chile, 10-11 Nov 2009
12 of 27
4 – THE NEW CIGRE STUDIES
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
17 Countries
•Australia
•Brazil
•Canada
•Denmark
•Finland
•France
•Iceland
•Italy
•Japan
•Norway
•Romania
•South Africa
•Spain
•Sweden
•Switzerland
•United Kingdom
•United States
CIGRÉ WGB2.08 TF3.1 Data Bank
Electra Journal Report
Cigré Technical Brochure= delivered for publication: 2010
Santiago, Chile, 10-11 Nov 2009
13 of 27
5 – ADVANCED AESTHETIC SOLUTIONS
• Unique solutions / For specific places
• Solutions for a line / or segment
• Standard aesthetic solutions
5.1 – Solutions for Single Places: The Finnish Experience
Fingrid first landscape towers: early 90’s
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Finnish
Solutions
Santiago, Chile, 10-11 Nov 2009
14 of 27
5.2 – Solutions for Lines / Segment of Lines
400kV OHL Aarhus / Aalborg-Denmark
Eltra competition: 48 proposals
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
The Wining entry – Erik Bystrup
Danish
Aesthetic Line
Santiago, Chile, 10-11 Nov 2009
15 of 27
5.2 – Solutions for Lines / Segment of Lines
The 110kV Salmisaari-Meilahti TL, Helsinki, Finland
Designed by Prof. Antti Nurmesniemi
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
The Salmisaari
Meilahti OHL
First pencil drawings
Santiago, Chile, 10-11 Nov 2009
16 of 27
5.3 – Standard Aesthetic Solutions:
The French Experience
EDF / RTE Competitions
- The 1994 Architects/Designers competition
- The 2004/2005 Manufacturers competition
5.3.1 - The 1994 Architects/Designers competition:
- 121 proposals for 400kV OHL supports
- As much freedom as possible to the creativity
- Electrical clearances, phase arrangements
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Santiago, Chile, 10-11 Nov 2009
17 of 27
The winners
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Marc MIMRAM I. Ritchie, K. Gustafson
The French
Experience
The “ROSEAU” Tower
The “FOUGERE” Tower
Santiago, Chile, 10-11 Nov 2009
18 of 28
3.5.2 - The 2004/2005 Manufacturers competition:
- Functional specifications defining:
• Position of phases
• Number of circuits
• Silhouette suggestion
• Materials to be used
• To have technical solutions
The winner:
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
The “ARVERNE” Tower
Transel, Linuhonnun
Santiago, Chile, 10-11 Nov 2009
19 of 27
6 – OH LINE TOWERS INTO ARTWORKS
• Aesthetic towers very successful in terms of public
acceptance.
• Towers evolving from OHL Supports to “urban
electrical sculptures”.
• Finnish Sculptures
Fingrid landscape towers
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Finnish
Sculptures
Santiago, Chile, 10-11 Nov 2009
20 of 27
• Icelandic Studies
2008 landscape competition (98 proposals).
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Icelandic
Studies
Santiago, Chile, 10-11 Nov 2009
21 of 27
• New RTE Technique for Improving OHL Appearance
- “Art Installations” over existing OH Lines.
- “Power Networks into Artworks” by Elena Paroucheva
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Networks
into Artworks
Santiago, Chile, 10-11 Nov 2009
22 of 27
7 - ANALYSIS OF THE SOLUTIONS
• Increasing environmental concern in all new OHL
projects:
- Short lines, long lines
- Urban, rural landscapes
• For long / rural lines, cost is an absolutely relevant
issue:
- Invisibility
- Transparence
- Slenderness
- Compaction
- Camouflaged structures
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Santiago, Chile, 10-11 Nov 2009
23 of 27
All together driven by cost!
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Solutions for long OHL Towers
Santiago, Chile, 10-11 Nov 2009
24 of 27
• For short / urban lines, aesthetic towers more and more
used as attractive solutions:
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
1992 Seville Expo Tower - SpainVaasa, Palosaari. Jorma Valkama
Santiago, Chile, 10-11 Nov 2009
25 of 27
• “Symbolic links” with “icones” of the societies:
- Architeture
- History
- Culture
- Traditional symbols
- Folklore
- habits
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Symbolism on
Aesthetic Towers
Santiago, Chile, 10-11 Nov 2009
26 of 27
8 – CONCLUSIONS
- Great growth on electricity demand will continue in the
near future.
- Different challenges for utilities in different regions of the
world to supply more power.
- Long, very long lines (up to 2500km) under construction in
the world
→ Aesthetic solutions driven by cost.
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
Santiago, Chile, 10-11 Nov 2009
27 of 27
- 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!
Congreso Bienal Internacional CIGRE 2009
Suministro Eléctrico Sustentable
top related