The Design Pylon Project



 

Due to fierce public opposition to lattice towers, it was decided in 2001 that new design pylons should be used for future overhead lines.

The BYSTRUP Design Pylon was awarded 1st prize in an international competition organised by Energinet.dk in 2001. At present, about 80 of these pylons have been erected in Denmark.

The overall strategy for the Design Pylon is to reduce visual intrusion in the landscape. The pylon is reduced to a few simple elements quietly crossing the landscape. Several options for surface treatment were examined and the final choice was hot-dip galvanised steel for the shaft and stainless steel for the lattice top. The lattice head is built of stainless steel tubes joined by cast nodes: a simple, cost-efficient and quick assembly method.

The power line is designed as line of mono-pile structures with stainless steel filigree heads that  blend into the sky – “magically” - only the shafts remain noticeable.

 

The Design Pylon has proven its remarkable benefits by being successfully installed and energized for the last ten years on a 27km line in Denmark.

The Pylon in Denmark is designed for 1x400kV but it is feasible for 330 kV and 132 kV in even smaller versions according to the relevant loads and specifications.

The tower head is constructed as a lattice structure of stainless steel tubes welded together. The joints of the tubes are cast in stainless steel. Developing the moulds for the castings and execution of the casting were difficult tasks due to the complicated geometry. 
 
A prototype of the suspension tower was constructed and tested mechanically to 105% of the maximum design loads.

The overall design strategy for the new 400kV tower was to design a tower which, unlike the existing Donau towers, did not add visual “noise or interference” to the landscape. A tower consisting of as few elements as possible and simple in its design. 

The route of the line was designed with many small deviations in order to adapt the route to the landscape and the farms in the area. Towers influenced by these deviations (angles up to 5o) will have increased forces in tower top, shaft and foundation and the shafts and foundations for these towers were strengthened compared to the normal suspension towers. This was judged beneficial for the line expression in spite of the increased weight of the structures.

As V-chains were used throughout, the appearance from tower to tower did not change even if the line angle varied from tower to tower.

"
The locals were involved in the entire process and embraced their new pylons, nick-naming them Magic Wands
.


- Henning Øbro, Senior Executive Project Manager, Energinet.dk.
 

 
Main specs for BYSTRUP Design Pylon:
 
Power: 1 x 400kV
Height: 31 metres / 100 feet
Units/km: 3  (5 units/mile)
In total: 84 pylons
Material: Hot-dip galvanised steel shaft - stainless steel lattice head
Outline: Minimal footprint
Assembly: On-site and quick
Installation: Simple and easily installed monopile foundation
Manufacturing: Production possible anywhere in the world
Energised: 2006
Origin: 1st prize in international competition


 
Contact us
You are always welcome to contact BYSTRUP
on phone +45 39 27 00 85 or via the form below
Name:
*
E-mail:
*
Phone:
*
Message:
 

 
BYSTRUP     Vermundsgade 40a      DK 2100 Copenhagen Denmark      Phone +45 39 27 00 85      Company reg. no. 32099734
BYSTRUP 2014 © All rights reserved | Cookie Policy Site disclaimer
BYSTRUP
Vermundsgade 40a
DK 2100 Copenhagen
Denmark
Phone +45 39 27 00 85
Company reg. no. 32099734

BYSTRUP 2014 © All rights reserved
Cookie Policy Site disclaimer