Renewal of the SBB traction current supply
The SBB transmission grid is being converted from 66 kV to 132 kV in order to meet the growing demand for energy and power in north-western Switzerland. Basler & Hofmann is responsible for planning the conversion of the existing substations in Biel and Muttenz, from concept design to invitation to tender.
The substations will be equipped with new primary components. In addition to the electrical engineering work, extensive renovation work is being carried out in the areas of construction, self-supply, site lighting, earthquake-resistant design and fire engineering.
The work in the substations is being carried out during ongoing operations, which places special demands on work preparation, scheduling, commissioning of the sub-systems and occupational safety. In order to disrupt operations as little as possible, some of the conversions are being carried out with additional temporary facilities.
Our services
- Phases 31 to 41 in accordance with SIA 108 for the entire energy supply systems
- Creation of the concept design incl. PIP for the replacement of the primary components
- Relocation of the existing transformers
- New construction of the busbar structure with 3 132 kV bays between the line route and transformers
- New construction of the transformer trough with environmental protection requirements
- New construction of the conduit system for the cabling of all components on the site
- Replacement of all medium-voltage cables on the GIS system
- Planning the adaptation of all protection devices at 132 kV level with new cabling for the primary components
