First order for Powerformer

A biomass-fired combined heat and power plant in Sweden will be the site of the first commercial application of Powerformer, ABB`s combined generator and transformer.

The plant, owned by utility Eskilstuna Energi & Miljö, will enter service in 2000. The SKr450m ($57m) plant will produce 38 MW of electricity and 71 MW of heat. A further 15 MW of heat will be recovered from the flue gases.

ABB Generation AB will supply the Powerformer module which will be driven by a steam turbine. The Powerformer will be directly connected to an existing 136 kV substation, eliminating the need for a step-up transformer and medium voltage switchgear. This design will result in a compact footprint for the plant and an increase in total plant efficiency of one percentage point. Plant availability is also expected to increase.

The Eskilstuna plant will be fuelled by forest and sawmill wastes. ABB Stal AB will supply the steam turbine. In June 1998, a Powerformer unit rated at 45 kV, 11 MVA, entered service at Porjus hydropower plant in Sweden for testing purposes.