This research project investigates the idea of converting existing multi-circuit AC transmission towers to hybrid AC/DC systems.

 

Bulletin SEV/VSE, Matthias Walti

 

Aiming at maximizing the capacity of existing infrastructure and reducing the need for new transmission corridors, this research project investigates the idea of converting existing multi-circuit AC transmission towers to hybrid AC/DC systems. The main research focus is on the effects related to corona discharges from the surfaces of AC and DC conductors. These include corona power losses, audible noise and ion currents.
Collaborations with transmission system operators and other stakeholders ensure that practical research needs are addressed. Furthermore, partnerships with researchers from social sciences have been launched in order to investigate public acceptance of hybrid AC/DC lines.
The project consortium is a team formed from ETH Zürich, ABB, Amprion, Axpo, FKH, Institute for Environmental Decisions (ETH Zürich), Institut für Politikwissenschaft (Uni Bern), KWO, Pfisterer Sefag, RWTH Aachen (IfHT), Swissgrid, TransnetBW.

More details about the project are available

The ESC member involved in this project is Prof. Dr. Christian Franck, Professor of High Voltage Engineering

The research and teaching focus of the High Voltage Laboratory (HVL) is in the area of “technologies for future electric power transmission systems”. The two focus areas are: 1) High-Voltage Direct-Current (HVDC) Transmission Technology and 2) High Voltage Gaseous Insulation Systems (in particular those excluding SF6-gas). The different research projects of the HVL partially overlap and often contain methods from both focus areas.