Compact Power Plants as an Economical and Reliable Standby Power Supply

Valmet Corporation has manufactured diesel generating sets as various configurations over 40 years and it is one of the field´s largest manufacturer in Scandinavia. In the 1980´s Valmet developed a new series of diesel generating sets called Series V as well as compact power plants which has brought new potential for standby power. As an indication of innovation a patent has been issued for this new diesel generating set in all the countries it has been applied for. The compact power plant as specified in this paper is meant for the outputs up to 250 kVA. In this output range it will give certain technical and economical advantages. To be economical the plant must go in a small room and the installation, commissioning and maintenance must be easy. The above-mentioned requirements led into a modular configuration. All the modules needed in the plant are manufactured in advance as a series production which means savings in costs and also as is well known improves the reliability of the whole plant, because there is no need for improvisation, in the machinery room at the installation stage. Thanks to the modular configuration and for the reason that the plant is ready-adjusted, set and test-run at the factory the commissioning is easy. In the compact power plant the diesel engine is installed above the generator. The power transmission from engine to generator is achieved by a toothed belt.