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Siemens and Netze BW install new smart substation

Oct 26, 2020
Substations
Posted by Patrick Haddad

In conjunction with their ongoing research cooperation, Siemens Smart Infrastructure and Netze BW GmbH have co-developed an intelligent and environmentally-friendly distribution substation.

For the first time, the new station combines the F-gas-free 24 kilovolt (kV) ring main unit (RMU) from the Siemens blue GIS portfolio with a 630 kilovolt-ampere (kVA) distribution grid transformer.

Instead of mineral oil, the Eco Design 2-certified transformer uses fully biodegradable, natural bio-ester oil for insulation. The integrated automation system from the Siemens’ Sicam portfolio is designed for the special requirements of distributed grids and enables reliable monitoring and control of the grid.

The innovative substation, which will connect the medium-voltage distribution grid and the low-voltage local grid in the town of Kreuzthal in the Oberallgäu region, is now being tested under real-life conditions. 

“Power generation from renewable energy sources is increasingly depending on the weather, posing new challenges especially for medium and low-voltage grids. That’s why we’re working with Siemens on future-proof solutions that will continue to ensure a reliable and yet sustainable power supply for all connected cities and communities,” said Martin Konermann, technical managing director at Netze BW.

The core of the station is a blue GIS 24 kV Ring Main Unit (RMU). It combines the Clean Air insulation medium, a mixture of natural, atmospheric gases, with proven and reliable vacuum switching technology. This eliminates the need for any fluorine-based gas mixtures (F-gas). Integrated into the Netze BW distribution grid the switchgear will be tested live – and join the blue GIS family as the next new member.

“Distribution substations are key components of the distribution grid. Together with Netze BW, we have piloted a one-of-a-kind solution that combines our proven switching technology with environmentally-friendly technologies and digital intelligence. With this solution, we are setting a new standard for smart and eco-friendly energy distribution,” stated Stephan May, CEO of the Distribution Systems Business Unit at Siemens Smart Infrastructure.

Source and photo courtesy of: Siemens

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