PLUTON has completed the 6th project on equipment supply for city transport substation in Stockholm (Sweden)

In May 2018, the Sickla substation building on the latest and the most up-to-date Tvärbanan half-speed tram line (Stockholm) was completed.

"Tvärbanan" literally means "line for interchanges" or "crossroad". Line length is 11.5 km, number of stops — 17. Only modern high-speed trams ply along with it. The tram line extension up to Saltsjöbanan railway "Sickla" suburban old-time electric trains platform with the arrangement of a cross-platform interchange between tram and electric trains was carried out in late 2017.

The Swedish partner company, specialized in the field of high voltage equipment, was the General Contractor. In 2017 this company carried out the design, building, selection, and purchase of equipment for traction substation, and in 2018 carried out the installation and commissioning works.

PLUTON experts carried out development and equipment supply, as well as commissioning execution monitoring.

Within the framework of the project, the traction substation was equipped with reliable and modern equipment, meeting European and international standards — rectifier V-TPED-750-12R, DC switchgears series RU-750-L, RU-750-OSH, RU-750-RV, as well as with high-speed circuit breaker checker produced by PLUTON.

The project was implemented within a maximally short period (it's been less than 4 months from development to the day of supply). Besides, the site area for substation placement was rather small, so that it was necessary to select compact equipment, which would allow maximally reducing occupied substation space.
PLUTON introduced a completely new solution — withdrawable "diode-diode" rectifier V-TPED-750-12R, developed especially for project needs. Compact overall dimensions are a distinctive feature of rectifier — one section width is only 600 mm. The Rectifier is installed on a par with switchgears 750 V.

Withdrawable design of rectifier V-TPED-750-12R provided evident advantages — free access to the components and one-sided maintenance at the narrow facade. A special backboard provides a safe separation of the power unit from the bus compartment. The rectifier is equipped with a microprocessor protection system, diagnostics, and control, WEB interface.

Information about the rectifier and its components state can be monitored on the visualization panel with the use of a specialized program.

The 12-pulse rectifier is developed with the application of innovative schematic and technical solutions, meant to significantly reduce substation operational costs, increase equipment lifetime and provide operational safety. Due to the two-section design, in case of failure or breakdown, the diode can be replaced without rectifier emergency shutdown — the second section remains active.

Sickla project is not the first successful experience of PLUTON company in Sweden. In 2016 PLUTON carried out a DC equipment supply for 5 traction substations for 1,6 MVA capacity Lidingöbanan line reconstruction. Project implementation final result completely met Customer's expectations — city-owned company AB Storctockholms Lokaltrafik, which carries out public transport arrangement, express willingness to further cooperation with PLUTON.