Insulation gases are applied in electrical equipment such as Gas Insulated Switchgear (GIS) and Lines (GIL), high- and medium-voltage circuit breakers and switches. Sulfur hexafluoride (SF₆) is widely used for decades as insulation medium in electrical equipment. However, SF₆ is also a strong greenhouse gas with a global warming potential (GWP) of 23,500 (i.e. one kg of SF₆ released to the atmosphere contributes to global warming as 23.5t of CO₂ would do).Read More

The structure of wholesale electricity markets impacts how prices are formed, and how accurately prices reflect the true cost of serving load. As the dynamics of the electric power sector change – especially the characteristics of the generation mix – there is a need to evaluate whether pricing mechanisms are adequately valuing wholesale electricity.Read More

Overhead Lines OHL are an important part for the supply of electricity. Together with underground cables UGC and gas insulated lines GIL they transport energy from electric power plants to households, factories, transport facilities and are used for many other applications.Read More

It is with deep regret that CIGRE announces the passing of Prof. Heinz-Helmut Schramm.

Almost his entire professional life, from 1961 to 2001, Prof. Heinz-Helmut Schramm was involved in the development of medium and high voltage switchgear. He studied Electrical Engineering at Darmstadt Technical University and received his degree of Doctor of Engineering from the Munich Technical University. He joined the basic research department of Siemens in 1961, before moving to the Siemens high voltage switchgear factory in 1965. Read More