New Concept to Build Standby Power Plants

Abstract

The generating set department of Valmet Linnavuori Works, Finland, has during the last four years developed a new series of diesel generating sets, called Series V, in the output range of 30 to 180 kVA. The innovation came as a result of the development work, for which Valmet has taken out a patent and a protection of designs in many countries. The customer gets the real benefit of the new innovation. The total costs compared with those of traditional, noise-attenuated standby power plant solutions are about a quarter less. The basic planning criteria were small size and easy installation. The small size was achieved by installing the engine above the generator and by replacing the relay control by a programmable logic. The power from engine to generator is transmitted by the toothed belt which at the same time gives the possibility to drive the engine at higher speed than in the direct coupling. This means that more power can be taken from the engine, which also makes the size of the whole plant smal1er. The easy installation was achieved by packaging all the parts on a single base frame. The shape of the machine was chosen so that the whole machine will go in through a standard-sized fire door, whose frame is built into the outer wall of the future machinery room. The machine is hauled in through this door, and the opening is covered with a ventilation louvre delivered along with the machine.