Transmission Structures
Progress Standardizing Recommended Creepage in DC
Today’s demand for integrating renewables into energy supply has made HVDC transmission a much more interesting option than in the past. This is triggered by factors such as that HVDC systems may be less expensive in terms of required equipment investment (converter stations, overhead lines, etc.), that electrical losses are lower and that right-of-ways...
Read More
Impact of Stress Cone & Joint Body Expansion Rate on Electric Field Stress
Layout of pre-moulded stress cones for elastomeric cable accessories is designed and optimized using computer calculations of electrical stress on the accessory. During installation, however, stress cones are expanded, thereby reducing thicknesses of the... Read More
The World’s Remarkable Transmission Structures
Over 20 years INMR has visited and reported on hundreds of transmission lines throughout the world – crossing deserts, rain forests, urban areas, towering mountains and other diverse landscapes. While the majority of these have involved fairly conventional... Read More
Toward More Aesthetic Power Lines
The issue of grid aesthetics is really a question of image. For example, the concept of ‘industrial soldiers marching across the landscape’ was used to support an entry in a 2008 competition for a new pylon to be used by Italian TSO Terna. This edited... Read More
Design Principles for External Insulation at Converter Stations up to 1100 kV
External insulation is one of the critical design aspects for HVDC equipment at converter stations. This is especially the case for UHVDC systems. The basic design principal for such a system with energy transmission capability up to 10 GW is to achieve... Read More
Development & Implementation of 400 kV Eagle Transmission Tower
One of the consequences of the Danish Energy policy is that the transmission grid has to expand. Fluctuating wind generation places strong requirements on the grid because large amounts of energy have be transported from wind farms to demand centres in... Read More
